RGPV Questions Paper B.E. I and II Semester Examination, June 2014 For Engineering Chemistry

RGPV Questions Paper B.E. I and II Semester Examination, June 2014 For Engineering Chemistry

Note: i) Answer five questions. In each question part A, B, C is compulsory and D part has internal
ii) All parts of each question are to be attempted at one place.
iii) All questions carry equal marks, out of which part A and B (Max. 50 words) carry 2 marks,
part C (Max. 100 words) carry 3 marks, part D (Max. 400 words) carry 7 marks.
iv) Except numericals, Derivation, Design and Drawing etc.
Unit – I
1. a) What are the advantages of break point chlorination? 2
b) In the deionization process water is usually first passed through the cation exchanger and than
through the anion exchanger. Give reason? 2
c) How many grams of CaSO4
dissolved per litre gives 126 ppm of hardness? 3
d) Write the equations involved in the lime soda process. Give the advantages of Hot lime soda
process over cold lime soda process? 7
Define alkaline and non alkaline hardness of water. Mention various units use for its expression
and show their relation also? 7
Unit – II
2. a) Why is Ethylene dibromide add when TEL is used as an antiknock? 2
b) Why are gaseous fuel more advantageous than solid fuel? 2
c) 0.72 gram of a fuel containing 80% carbon, when burnt in a bomb calorimeter, increased the
temperature of water from 27.3 to 29.1°C. If the calorimeter contains 250 gms of water and
its water equivalents is 150 grams calculate the H.C.V. of the fuel in kJ/kg? 3
d) What do you know about term cracking? Describe fixed bed catalytic cracking with diagram?
Describe how proximate analysis of a fuel carried out. What is the importance of this analysis?
Unit – III
3. a) Why should a good lubricating oil posses a low SEN? 2
BE-101 PTO
b) Give the classification of refractories with examples. 2
c) An oil sample under test has a say bolt universal viscosity of 64 seconds at 210°F and
564 seconds at 100°F the low viscosity standard (gulf oil) possess a say bolt viscosity of
64 seconds at 210°F and 774 seconds at 100°F. The high viscosity standard (Pennsylvanian
oil) gave the say bolt viscosity value of 64 seconds at 210°F and 414 seconds at 100°F.
Calculate the V.J. of the oil sample under test? 3
d) Describe important process parameters for manufacturing a good cement clinker? 7
Define flash point and fire point. Describe the determination of flash point by pensky marten’s
apparatus? 7
Unit – IV
4. a) What is meant by Tacticity of polymers? Explain. 2
b) Define polymerization. List out various initiators used in addition polymerization? 2
c) Explain preparation, Properties and uses of plexiglass? 3
d) What is compounding of rubber? Name the ingredients used in compounding also give their
functions? 7
Write short note on : 7
i) Nylon 6:6
ii) Gutta percha Rubber
Unit – V
5. a) Draw optical diagram of a simple photo electric photometer? 2
b) Define following with examples. 2
i) Chromophore
ii) Auxochrome
c) A 50 ml of water sample contains 840 ppm of dissolved oxygen. After 5 days the dissolved
oxygen value becomes 230 ppm after the sample has been diluted to 80 ml calculate the BOD
of the sample? 3
d) What are the essential parts of a gas chromatographic assembly? Give the important applications
of gas chromatography? 7
0.5 g of CaCO3
was dissolved in HCl and the solution was made to 500 ml with distilled water.
50ml of this solution required 25ml of EDTA solution for titration. 50ml of hard water sample
required 20 ml of EDTA. After boiling 50ml of boiled water sample required 15ml of same
EDTA calculate each type of hardness in mg/l?

RGPV Previous Question Papers BE 1st Year Engineering Graphics June 2010

RGPV Previous Question Papers BE 1st Year

Engineering Graphics June 2010


Note :Answer all questions.

Total six questions are to be attempted.

There is internal choice within each question.

Assume suitable data wherever necessary.

Q.1. Answer any TEN questions.

(i) Drawings of buildings are drawn using the following scale:

(a) 1:100 (b) 2:1 (c) 1:1 (d) None of these

(ii) The ratio of the length of the drawing of the object to the actual length of the object is called:

(a) Reduced scale (b) R.F. (c) Object-drawing (d) None of these

(iii) When a cone is cut by planes at different angles,the curves of intersection are called:

(a) Vertices (b) Conic sections (c) Ellipse (d) None of these

(iv) The curve generated by a point fixed to circle inside its circumference, when it rolls along a circle inside, it is called:

(a) Involute (b) Cycloid (c) Hypocycloid (d) Epicycloid

(v) For drawing thin lines of uniform thickness the pencil should be sharpened in the form of:

(a) Chisel edge (b) Conical (c) Pointed (d) Trapezoidal

(vi) The scale of chords is used to set out or measure:

(a) Chords (b) Lines (c) Angles (d) None of these

(vii) When the drawing is drawn of the same size as that of the object, the scale used is:

(a) Diagonal scale (b) Full size scale (c) Vernier scale (d) None of these

(viii) When measurements are required in three units, the scale is used as:

(a) Diagonal (b) Plain (c) Comparative (d) None of these

(ix) When the cutting plane makes the same angle with the axis as do the generator, the curve is:

(a) Hyperbola (b) Parabola (c) Ellipse (d) None of these

(x) In a conic the line passing through the fixed point and perpendicular to the fixed line is called the:

(a) Major axis (b) Directrix (c) Minor axis (d) None of these

(xi) The line joining any point on the spiral with the pole is called:

(a) Major axis (b) Minor axis (c) Asymptotes (d) None of these

(xii) The curve generated by a point on the circumference of a circle rolling along a straight line is called

(a) Involute (b) Cycloid (c) Hyperbola (d) None of these

(xiii) The isometric scale and true length of the object are

(a) Same (b) Less than true length (c) More than true length (d) None of these

(xiv)For a cylindrical object the minimum number of views are required to represent fully are

(a) Two views (b) Four views (c) Single view (d) None of these

(xv) The polyhedra is a solid defined as

(a) Bounded by planes called faces   (b) Generated by revolution of a plane

(c) Generated by revolution of a triangle (d) None of these


Q.2. (a) The major axis of an ellipse is 120 mm long and the minor axis is 80 mm long. Draw the ellipse by arcs of circles method.

(b) A circle of 50 mm diameter rolls on the circumstances of another circle of 175 mm diameter and outside it. Trace the locus of a point on the circumference of the rolling circle for one complete revolution.


(a) Construct a scale of R.F. = 1/2.5 to show decimeters and centimeters and by a vernier to read millimeters, to measure upto 4 decimetres.

(b) A circle of 40 mm diameter rolls on the inside of a circle of 90 mm diameter. A point P lies within the rolling circle at a distance of 15 mm from its centre. Trace the path of the point P for one revolution of the circle.


Q.3 (a) A room is 4.8 m × 4.2 m × 3.6 m high. Determine graphically the distance between a top corner and the bottom corner diagonally opposite to it.

(b) A line AB, inclined at 40º to the VP has its ends 50 mm and 20 mm above the HP. The length of its front view is 65 mm and its VT is 10 mm above the HP. Determine the true length of AB, its inclination with the HP and its HT.


(a) A point P is 20 mm below HP and lies in the third quadrant. Its shortest distance from xy is 40 mm. Draw its projections.

(b) The front view of a line AB measures 65 mm and makes an angle of 45º with xy. A is in the HP and makes and the VT of the line is 15 mm below he HP.The line is inclined at 30º to the VP.Draw the projections of AB and find its true length and inclination with the HP.Also locate its HT.


Q.4.(a) A regular hexagon of 40 mm side has a corner in the HP. Its surface is inclined at 45º to the HP and the top view of the diagonal through the corner which is in the HP makes an angle of 60º with the VP. Draw its projections.

(b) Draw the three views of the cone, base 50 mm diameter and axis 75 mm long, having one of its generators in the VP and inclined at 30º to the HP, the apex being in HP.


(a) A tetrahedron of 75 mm long edges has one edge parallel to the HP and inclined at 45º to the VP while a face containing that edge is vertical. Draw its projections.

(b) A plate having shape of an isosceles triangle has base 50 mm long and altitude 70 mm. It is so placed tat in the front view it is seen as an equilateral triangle of 50 mm side and one side inclined at 45º to xy. Draw its top view.


Q.5.A cylinder, 65 mm diameter and 90 mm long, has its axis parallel to the HP and inclined at 30º to the VP. It is cut by a section plane in such a way that the true shape of the section is an ellipse having the major axis 75 mm long.Draw its sectional front view and true shape of the section.


A frustum of a square pyramid has its base 50 mm side, top 25 mm side and height 75 mm. Draw the development of its lateral surface.


Q.6.(a) A cylindrical block of base 60 mm diameter and height 90 mm standing on the HP with its axis perpendicular to the HP. Draw its isometric view.

(b) Draw the following views of the object shown pictorially in Fig.

(i) Front view   (ii) Plan


Draw the following views of the object shown pictorially in Fig.

(i) Front view  (ii) Plan

RGPV Previous Question Papers BE 2nd Semester Basic Civil Engineering 2007

RGPV Previous Question Papers BE 2nd Semester

Basic Civil Engineering 2007


1. (a) Give classification of stone masonory. What points should the observed while supervising stone masonary work?

(b) Define a linted. Mention where and why they are used in buildings. Give name of molenals which are commonly made for making lintel?
(c) What are various types of stairs cases commaonly used? Which of the types you will use when.
(i) Space available is minimum.
(ii) Space available is large.

2. (a) What are various types of cement commonly available? Give details of any four types of cement.
(b) What is water cement ration? How is it important for the strength of concrete?
(c) Write down advantages of prestressed concrete over other low types of concrete available.

3. (a) Explain the various obstacles encountered during chain survey. How are they tackled?
(b) A distance of 4666 m was measured by a 30 m chain. Later it was detected that chain was found 2.5 cms too long. If the chain was initially correct, determine the exact length that was measured.
(c) Discuss only disadvantages of Plane table surveying?

4. (a) Define the following terms :
(i) True meridian
(ii) Magnetic meridian
(iii) Magnetic declination
(iv) Local attraction.
(b) Following observations were made with a compass. At what stations do you suspect local attraction? find the corrected bearings of the lines:
Line Fore Bearing Back Bearing
AB S 45 degree 30′ E N 45 degree 30′ W
BC S 60 degree 00′ E N 60 degree -40′ W
CD S 03 degree 20′ E N 05 degree -30′ W
DA S 85 degree 00′ W N 83 degree 30′ E
(c) Differentiate between fore bearing and back bearing?

5. The following consecutive readings were taken on a ground.
Instrument was shifted after 5th & 8th reading now.
Stations B.S. I.S. F.S. H.I. R.L.
A 0.165 100.165 100.00 B.M.
B 2.100 98.065
C 3.160 97.005
D 2.135 98.03
E 1.335 2.125 99.395 98.04
F 1.125 98.270
G 1.465 2.455 98.405 96.94
H 3.085 95.32
I 2.125 96.28
The instrument was shifted after taking 5th and 8th readings. Enter the data in a level book page and calculate all the R.L.S., if first reading was taken on B.M. 100.00. Apply usual check.

6. (a) What are contours? Give important characteristics of contours.
(b) Determine the area between line AB and a meandering stream for offsets taken at a regular interval of 20 m along the line AB. Use any two methods for calculations:
Point Distance (m) Offset
A 0 11
20 14
30 17
40 19
50 21
60 22
80 17
100 21
120 21
140 25
160 29
180 32
200 14
240 17
280 17
320 18
390 9
400 11
B 440 12

7. (a) Various bond used in brick masonry.
(b) Remote Sensing
(c) E.D.M. methods over conventional methods.
(d) Various types of doors
(e) Curing the concrete
(f) Seasoning of timber

8. (a) What is foundation? Give simple classification of same, giving circumstances under which they are to be adopted.
(b) What is bearing capacity of soil? How its value is useful in design of foundation?
(c) Describe any two types of bonds commonly used in brick masonry. Give advantages of one over other?

RGPV Previous Question Papers BE 6th Semester Advance Computer Architecture 2012

RGPV Question Papers BE 3rd Semester Computer Science

Advance Computer Architecture 2012



1.(a). Explain Flynns classification based on multiplicity of instruction
stream and data stream.
(b). Explain the following terms to measure performance of computer
(i). Clock rate and CPI (Cycle Per Instruction)
(ii). MIPS (Million Instruction Per Second) rate
(iii). Throughput rate
(iv). Performance factor
2.(a). Explain the architectural operations of SIMD and MIMD
computers. Distinguish between multiprocessor and multicomputers
based on their structure.
(b). What is Interconnection Network ? Explain different
interconnection network architectures comparing their
architectural features.

3(a). Explain the following terms associated with cache desigh:
(i). Write through verses write back cache
(ii). Factors affecting cache hit ratios.
(b). Discuss arbitration, transaction and interrupt w.r. to backplane bus
4(a). Explain Interleaved memory organization. Justify the use of
interleaved memory organization.
(b). Explain MESI protocol for cache coherence with suitable example..
5(a). Explain the following approaches to the branch problem in pipline
(i). Branch elimination
(ii). Branch Prediction
(iii). Branch target
(b). Distinguish between the following.
(i). Arithmetic and instruction pipeline.
(ii). Unifunctional and multifunctional pipeline
(iii). Static and dynamic pipeline.
(iv). Scalar and vector pipeline
6(a). Explain the working of arithmetic pipeline with suitable example.
(b). Consider the following reservation table for 4 stage pipeline with
clock cycle P=20 ns.

1 2 3 4 5 6
s1 x x
s2 x x
s3 x
s4 x x
(i). What are the forbidden latencies and initial collision vector ?
(ii). Draw state transition diagram.
(iii). Determine the MAL associate with the shortest greedy cycle.
(iv). Determine the pipeline throughput corresponding to the
MAL and given P.


7(a). Compare distributed and shared memory model.
(b). What is vector processing ? Explain the characteristics of vector
8(a). Explain message routing schemes in multicomputer network.
(b). Explain Snoopy coherency protocol.
9(a). Explain various parallel programming models.
(b). Write in brief on parallel languages and explain the features of
parallel language for parallelism.
10. Write short notes on the following:
(i). Parallel software tools
(ii). Object oriented parallel programming model
(iii). Parallel programming environment
(iv). Vector access memory schemes

RGPV Question Papers BE 3rd Semester Civil Engineering-Engineering Geology 2012

RGPV Question Papers BE 3rd Semester Civil Engineering

Engineering Geology 2012



B E III semester(civil engineering)

Examination oct-nov. 2012



Q.1 (a) Discuss the structure of the Earths Crust
(b) Geological work of river.

Q. 2 (a) Write notes on the following.
(a) Hydrologic cycle
(b) Water table
(c) Glacial valleys
(d) Sand Dunes

Q. 3 Discuss the Classification of Sedimentary rocks
Explain the various texture of igneous rocks

Q.4 Explain the following
(a) Natural bed of stone of Bedding plain
(b) Gneissose and Schistose structure of rock
c) properties of Slate and Marble
(d) Bowens Reaction Series
(e) minerals

Q.5 Discuss the classification of folds.
Q.6 Write notes on the following.
(a) Earthquake waves
(b) Columnar joints
C) Unconformity
D) Magnitude and Intensity

Unit –IV
Q.7 Discuss the various applications of Remote Sensing in Civil Engineering.
Q.8 Write notes on the following.
(a) GIS
(b) Satellite Imageries
c) spectral signature
d) scanning and framing system
e) active and passive remote sensing

Q.9 Name the various of Geophysical exploration. Discuss the Electrical resistively method

Q.10 Write notes on the following
a) Engineering properties or rocks
b) Porosity and Permeability of rocks
c) Site selection for Bridge
d) geological considerations for Dam construction.

RGPV Previous Question Papers BE 3rd Semester Civil Engineering-Building Drawing and Design 2012

RGPV Previous Question Papers BE 3rd Semester Civil Engg.

Building Drawing and Design 2012



1 (a) Explain different views of a building such as plan, section and elevation. What information can be derived through them ?
(b) By drawing figure of a building show- Beam,column ,DPC and lintel

2(a) Design and draw details of a dog legged stair case to be provided in a residential building with floor to floor height 3.3 m, consider the width of the stair 1.0m.
(b) Differentiate the flush door and panel door by drawing a figure. Discuss the suitablility of panel door, flush door and water proof flush door.

3(a) What is orientation? Draw the sun diagram and discuss the suitability of various units of residential building according to their requirement of light.
(b) Write short note on
i) Aspect
ii) Roominess
iii) Privacy

4(a) Economy is the first principle of planning-Discuss it.
(b) Differentiate the following
i) Circulation with Ventilation
ii) Water supply with sanitation
iii) Aspect with Prospect

5(a) Describe and discuss the concept of percent built up area and FAR. Discuss th exemptions of each.
(b) What is setbacks? Discuss the setbacks with reference to plot size. Also explain how they are useful tool to restrict the percentage built up area.

6(a) Write seven important provisions related to National Building code.
(b) Discuss the concept of colony planning. Write the salient feature of colony planning.

7 Plan a residential building on a plot sixe of 9.25X 15 .m with all necessary amenities. Provide at least on bed room on the ground floor. Percent built up area allowed is 80% and FAR 1.8. draw plan and sectional elevation.

8. Draw line diagram on the graph sheet for health centre building in block level location.
9. Plan and draw line diagram for a primary school to accommodate 800 students. Draw line diagram and show the particular of one class room by drawing double line diagram.

10 . Plan and draw the line diagram of hostel building for 60 students. Draw line diagram on the graph sheet.

RGPV Exams Questions Papers 3rd SEM Dec 2010 Data Structure

RGPV Exams Questions Papers 3rd SEM Dec 2010 Data Structure

RGTU B.E. (Third semester) EXAMINATION, DEC.2010

(Common for CS/IT Engg.)


Note.       Attempt any five questions. Each question carries equal marks.

1   (a) What are Asymptotic notations? Explain each notation with example and diagram.

(b)Solve the following recurrence relation T(n)=T(n-1)+1, with T(0) as initial condition./ Also find big oh


2. (a) What is recursion  ? How does it differ from iteration? Write an algorithm to generate first ten

Fibonacci numbers recursively.

(b) Consider a 2d array declared in “c” A [20] [30]. Element type is integer. If the base address is 1076,

what will be the address of A [17] [29]? Memory is byte oriented.

3. (a) Explain the inserting and deleting nodes from linked list implementing  stack and queue.

(b) What are D-queue and priority queue?


4.  (a) Write an algorithm to convert infix to postfix expression . Explain with example.

(b) Write function for:

(i) Finding size

(ii) Checking empty

(iii) Checking full

For the implementation of a queue in circular array with index value to indicate emptiness.

5.  (a) Following nodes are insert into empty tree in order :

5  16  22  45  2  10 18  30 50  12  1


(i) Binary search tree

(ii) AVL tree

(b) Draw the order-5 B- tree resulting from inserting the following keys (in this order) in to initially

empty tree:

4 40 23 050 11 34 62 78 66 22 90 59 25 72 64 77 39 12

6.  (a) Explain the operation of AVL tree.

(b) Write an algorithm to delete operation in any binary search tree (taking all classes).

7.  (a) Compare the worst case performance of heap sort with the worst case performance and average

case of quick sort.

(b) Explain insertion sort and selection sort briefly.

8.  (a)  What is the difference between an index function and a hash function? Explain three techniques

to build the hash function.

(b) Explain how balance is restored when an insertion into height-balance tree puts a code out of


9.   (a) Apply Prim’s algorithm to find the minimum tree of the given graph.

    Display the tree at each stage.

(b)  Compare graph traversal techniques.

10 (a) Explain Dijkstra’s algorithm with suitable example.

(b) Write short notes on the following:

(i) Strongly connected graph

(ii) Sparse matrix


RGPV Exams Questions Papers 3rd SEM Dec 2007 Data Structure

RGPV Exams Questions Papers 3rd SEM Dec 2007 Data Structure

RGTU B.E. (Third semester) EXAMINATION, Nov-Dec. 2007

(Common for EC/EE/EX Engg – DATA STRUCTURE – CS/EE/IP-304)

Note.    Attempt any five questions. All question carry equal marks. Make suitable assumption


1. (a) Write the properties of AVL tree and give two example of AVL tree.

(b)     A binary tree T has 9 nodes. The in order and preorder traversals of T yield the following sequence

of nodes:

Inorder  : E A C K F H D B G

Preorder : F A E K C D H G B

Draw the tree

2. (a) Consider the following arithmetic expression p, written in postfix notation

P: 12, 7, 3, – , 1, 2, 1, 5, +, *, +

(i) Translate P by inspection and hand; into its equivalent infix expression.

(ii) Evaluate infix expression.

(b) Differentiate between a tree and a graph .Is it possible to connect a graph into tree? If yes, how?

3. (a) What do you mean by hashing and what is hash function ? Explain with example.

(b) Sort the following integers using insertion sort:

25, 7, 48, 37, 12, 92, 86, 33

4 (a) It is possible to keep two stacks in a single array, If one grows from position —– of the array and

the other grows from the last position . Write a procedure PUSH (axis) that pushes element x onto

stacks where s is one or the other of these two stacks. Include all necessary error checks in your


(b) Enlist different operation which is normally performed on any linear array. Write the algorithms

for any two such functions.

5. (a) Explain memory allocation and garbage collection .

(b) Explain stack and write an algorithms for PUSH and POP operation.

6. (a) write a c  procedure  which implement circular queue.

(b) Write depth first search algorithms. Also draw linked representation of the following graph:

7. (a) Write a procedure which removes the first element of a list and adds  it to the end of the list with

out changing any data field. Also write a procedure which deletes the kth element from a link list.

(b) Write a program in c which does multiplication of two matrices.

8. (a) Write  sort notes on any four of the following :

(i) Abstract data type

(ii) Triangular array

(iii) Threaded binary tree

(iv) Priority queue

(v) Types of data structure



RGPV Exams Questions Papers Data structure 3rd SEM June 2009

RGPV Exams Questions Papers Data structure 3rd SEM June 2009

B.E. (Third semester) EXAMINATION, JUNE.2009

(Common of CS/IT Engg.)



Note.            Attempt all question . Each question carries equal marks.

1. (A) What do you understand by complexity of an algorithm? Explain space and time complexity. What

is big-oh notation?

(b)   Write a program in C/C ++ which does multiplication of two matrices.

2. (a) How is physical memory allocated for a two-dimensional array? If each element of an array D [20]

[50] requires 4 bytes of storage, base address of data is 2000, determine the location of D [10]

[10], when the array is stored as:

(I) Row major

(ii) Column major

(b) Write short notes on the following:

(I) Sparse matrices

(ii) Recursion

3. Write the algorithm for the following operation which is performed as doubly linked list:

(I) Creation

(ii) Traversing

(iii) Insertion

(iv) Deletion

(v) Concatenation


4. (a) Write insert and delete function in C/C++ language simulating insertion and deletion in queue

which is implemented by array of character.

(b)    Convert the following infix expression to prefix expression and give various steps in evaluating

using stacks. How much time and space does your algorithm takes?

(5*3?2)/(3+ (7+3)/10)

5.   What is B+ tree? Compare it with B-tree .Insert the following entries into an initially empty B-tree of

order 5 –


6. (A) Construct a binary tree whose in order and post order traversals are as follow:

In order – D, B, A, E, C, G, F, H.

Post order – D, B, E, G, H, F, C, A.

(b)   What is height balancing in a tree? Explain it by taking an example bad also write the algorithm for

inserting an element.

7. (A) enumerate various sorting algorithms and mention their time complexities.

(b)  Sort the following integers using:

(I) Bubble sort

(ii) Selection sort

(iii) Merge sort

5 7 3 6 2 8 4 1


8. (A) Explain the following:

(I) Insertion sort

(ii) Shell sort

(iii) Radix sort

(b)  Write a sort note on binary search algorithm and its time complex city.

9. (A) Differentiate between DFS and BFS. Give spanning tree and BFS spanning tree of the given graph.

(b) Explain Dijkstra’s algorithm with suitable example.


10. (A) for the following graph construct minimum spanning tree using:

(I)  Prim’s algorithm

(ii) Kruskal algorithm

(b)Write short notes on the following:

(I) Random access files

(ii) Internal sorting

(iii) B tree indexing



RGPV Exam Question Papers 3rd SEM June 2007 Electronics

RGPV Exam Question Papers 3rd SEM June 2007 Electronics

RGTU B.E. (Third semester) EXAMINATION, JUNE, 2007

(Common for EC/EE/IP Engg.)


Note.     (i)     Answer all question.

(ii) Total six question are to be attempted.

(iii)  There is internal choice within each question.

(iv)  Answer off all objective question should be at one place only.

(vi)  Assume suitable missing/misprint data if necessary.

1.     Attempt any two objective  type question from each unit (A- E) . (total 10. Nos. of question are to

be attempted.)

(A) Faster switching OFF of a p-n junction :

(a) requires zero current in the reserve direction.

(b) requires averages situation  current in the reserve direction.

(c ) requires a large current in the reserve direction.

(d) is independent of the serve current.

(ii) For a MOSFET , the gate current

(a) is negligibly small

(b) increase with increase in drain voltage

(c ) decrease with decrease in drain voltage

(d) is dependent of drain voltage.

(iii) The storage time of a p-n junction :

(a) Decreases with increased reverse bias voltage

(b)  Decreases with increased forward bias  voltage

(c) increases with increased-bias voltage

(d) is none of the above

(B) (i) Positive feedback is used for :

(a) stabilizing the gain  (b)generating oscillations  (c)increasing bandwidth

(d) Improving the input and output impedances

(ii) voltage shunt negative feedback amplifier approaches :

(a) ideal voltage amplifier

(b) ideal current to voltage convertor

(c) ideal voltage to current convertor

(d) ideal current amplifier

(iii)The maximum efficiency of a class-B push pull amplifier is :

(a) 25 percent (b)50 percent (c)78.5 percent (d)100 percent

(C) (i) An stable multavibrator has :

(a)  one stable state   (ii) one quasi- stable state

(c ) two stable state (iv) two quasi- stable state

(ii) CE configuration is the most preferred transistor configuration when used as a switch because :

(a) It  require only one power supply

(b) It require low voltage or current for operating the switch

(c ) it is easily understood by everyone

(d) it has small ICEO

(iii) Ideal differential amplifier has a CMRR :

(a) Zero    (b) infinity

(c ) 100      (d) 10000

(D) (i) Input offset voltage of an ideal OP-AMP should be :

(i) Low     (ii) high

(iii) zero   (iv) infinity

(ii) For an inverting amplifier the voltage gain is -10 and the resister at input circuit is 10 k. The feedback resister will be:

(a) 10 k     (b) 1 K

(c ) 100 K   (d) 1000 K

(iii) The Schmitt trigger circuit behaves as a :

(a) Square wave generator

(b) monostable multavibrator

( c) bistable  multavibrator

( d) free running multavibrator.

(E) (i) For producing latching action thruster uses :

(a)  internal negative feedback

(b)  internal positive feedback

(c ) none of above

(ii)  Once latched , the only way to open the SCR is:

(a)  reduce its current below  holding current

(b)  increase its current above holding current

(c )  positive trigger hit the gate input

(d)  none of the above

(iii)  The only way to close a four layer diode is with :

(a) reducing  current    (ii) increasing current

(c )  break cover             (d) triggering

2. (a) What do you mean by breakdown in a p-n junction ? Distinguish between avalanche and zener

breakdown in a diode.

(b)   Explain the working principle of PNP transistor:

Find the transistor current in the circuit of ahead fig. 1.


A silicon transistor with B=100 and ICo = 20n A is under consideration . Repeat if a 2K emitter

resister is added to the circuit comments on the results :

(a) Explain the V-1 characteristics of Zener diode and explain its working as voltage regulator.

(b) In fig.2, the Bdc of silicon transistor is 80. Draw the d.c. load line where is the Q point if RB = 390  K ?





3. (a) Discuss the effect of negative feedback on gain, input impedance and output impedance ,

distortion, stability.

(b) Sketch circuit of a Wien bridge oscillator . Explain its working .Determine its frequency of



(a)   Under what condition does an amplifier function as an oscillator ? Give the example of an oscillator

to be used at (i) low frequency  (ii) high frequency

(b) Explain why even harmonics are not present in push pull transistor ? Explain the working of class A

push pull amplifier . Determine its maximum conversion efficiency.

4. (a) What is meant by CMRR ? Derive a relationship of it.

(b)  Explain the bitable multavibrator circuit with the help of output waveform. Also give its applications.


(a) Explain the working of transistor as a switch.

(b)  Draw the circuit of a differential amplifier and explain its operation . Also discuss the transfer

characteristics of DIFF amplifier.

5. (a) What is 555 timer ? Explain in brief and its applications

(b)   Draw the circuit of the following using an op-Amp and explain their operation:

(i) Adder or summering amplifier  (ii) Differentiator

(iii) Log amplifier


(a) Explain input bias current , input offset current and slew rate regarding OP-AMP.

(b) Draw the circuit of astable multavibrator using 555 timer. Explain its operation and sketch the

relevant waveforms.

6. (a)  Explain the operation and application of the inverter circuit.

(b)  Explain V-1 characteristics of SCR. What is meant by Gate ON and OFF times ? Discuss turn OFF

and  turn ON mechanism in SCR.


(a) Explain UJT firing circuit.

(b) Write about construction of SCR. Explain different method for starting on SCR.


RGPV Exams Questions Papers 3rd SEM Dec 2006 Electronics

RGPV Exams Questions Papers 3rd SEM Dec 2006 Electronics

RGTU B.E. (Third semester) EXAMINATION, DEC, 2006

(Common for EC/EE/IP Engg.)


 Note.  (i)  Answer all question.

(ii) Total six question are to be attempted.

(iii)  There is internal choice within each question.

(iv)  Answer off all objective question should be at one place only.

(vi)  Assume suitable missing/misprint data if necessary.

1. (a) (i) The concentrations of minority carriers close to the junction in forward biased p-n junction.

(a)  are same ads the concentration without biasing.

(b) are less than the  concentration without biasing.

©  are more than the concentration without biasing.

(d) is less than the concentration without biasing in the p-region and more than the concentration

without biasing in the n-region

(ii)  A BJT used as a switch, switches between

(i) Cut-off and active region

(ii)  Cut-off and saturation region

(iii) Active and saturation region

(iv) Different operating point in the active region.

(iii) For an n-channel  enhancement  mode MOSFET , the drain current

(a) Decreases with increases in the gate current

(b) Increases with increase in gate voltage

© Is independent of gate voltage.

(d) Decreases with increases in drain voltage.

(B) (i) Which of the folowinng is not an advantage of negative feedback?

(a) Increases the gain of an amplifier

(b) Increases in bandwidth

© Reducing non liner distortion

(d) Improving the input and output impedances

(ii) Oscillator used for generation of low  frequency signals upto about 100 kZ is

(a) Colpits oscillator

(b) RC phase shift oscillator

© Hartley oscillator

(d) Crystal oscillator

(iii) Collector current of a class A amplifier flows

(a) for 360o  (b) for 180o

© more than 180o  and less tan 360o

(d) For 90o

(C ) (i) The pulse width of a monostable multavibrator can be controlled by :

(a) The amplitude of the trigger pulse

(b)  The width of the trigger pulse
(c ) The timing resistor and capacitor

(d) Any of the above

(ii) in Darlington pair , you

(a) add the individual ß’ s to get the overall ß

(b) multiply the  individual ß’ s to get the overall ß

( c) Subtract the individual ß’ s to get the overall ß

(d) none of the above

(iii)  When the BJT is turned from ON to OFF , the transistor comes to the off state.

(a)  as soon as the input signal is reserved

(b) as soon as the power supply is switched off

(c  ) After the excess charge stored in the base region is removed.

(d) After the input signal is removed

(D) (i) Ideal  OP-AMP has a CMRR

(a)  low    (b) high

(c ) zero   (d) infinity

(ii)  The gain of a non –inverting  amplifier having Rf = 2k  and R1 =k will be :

(a) 1           (b) 2

( c) 3         (d) 4

(iii)  A 555 timer can be used as :

(a) an stable multavibrator only

(b) a monostable multavibrator only

(c ) a frequency divider only

(d) any of the above

(E)  Thrusters are :

(a) three layer semiconductor devices

(b) four layer semiconductor devices

(c ) five layer semiconductor devices

(d) any of the above

(ii) To latch a SCR

(a)  a positive trigger should hit the gate input

(b) the current should be reduced below holding current

(c ) none of the above

(iii) Which of the following can work as  oscillator ?

(a) UJT

(b) SCR

( c) Both of the above

2. (a) Discuss the affect of temperature on zener and avalanche breakdown

(b) Draw the circuit diagram of an NPN transistor CE configuration and describe the input and output

characteristics . also define active saturation and cut-off region of CE transistor .


(a) Compare the following parameter of the three BJT configuration :

(i) Voltage gain    (ii) Current gain

(iii) Input impedance  (iv) Output impedance

(b) Draw the D.C. load line for the circuit given in figure. Also show the Q point .




3. (a) What is the relation between gain and feedback Af and that without feedback A ? Define negative

and positive feedback .

(b)     Sketch the circuit of phase  shift oscillator. Explain its working determine the frequency of



(A) State the explain barkhausen ‘criterion for sustained oscillator .

(b)  Explain the working of class-b push-pull  amplifier with the help of circuit diagram. Show that its

maximum conversion efficiency is 78.5%

4. (a) Diffrencaite between clippers and clampers

(b) Explain with the help of circuit diagram , how darlington connection method is used to increase the

input resistances of a transistor amplifier . Also discuss how darlington circuit can be improved by

adding bootstrapping circuit ?


(a) Explain ‘Turn on’ and ‘turn off’ timings of BJT . also explain why CE configuration is commonly

employed for transistor as a switch .

(b)  Explain the working of a stable multavibrator with te help of circuit diagram and wave forms. Also

give its application.

5. (a) What is an OP-AMP ? list all the ideal characteristics of OP-AMP .

(b) Draw the circuit and explain how :

(i) Op-Amp can be used as an integrator

(ii)  Op-Amp can be used as a differentiator

Also draw input and output wave forms.


(a) Explain CMRR  and slew rate regarding OP-AMP

(b) Draw the circuit of monostable multavibrator using 555 timer . Explain its operation and sketch the

relevant wave forms.

6. (a) Write a short about constructions of SCR

(b) Draw and explain v-1 characteristic of SCR . also explain different method for starting on SCR .


(a)  Explain the working of chopper circuit .

(b)What is meant by Gate ON and OFF times ? Explain in detail turn OFF and turn ON mechanism in SCR .


RGPV Exams Questions Papers 3rd SEM June 2006 Electronics

RGPV Exams Questions Papers 3rd SEM June 2006 Electronics

RGTU B.E. (Third semester) EXAMINATION, JUNE, 2006

(Common for EC/EE/IP Engg.)


Note:      Attempt any five questions.  All question carry equal marks. Assume any data missing.

1. (a)   Explain the working of the semiconductor diode characteristics . Does the characteristics

temperature dependent , if so give reasoning and shape of new characteristics ?

(b)     Give brief answer to each of the following :

(i) Tunneling in diode            (ii) Zener breakdown

(ii)   Diffusion capacitance    (iv) Junction capacitance

2. (a)   Explain the working of a JEFT . Draw the drain characteristics and define IDSS   and  VP.

(b) Find the value of IC,  IB and VCE from the circuit given ahead if ß= 40 , VCC = 20.5, RC = 6.5 K,  R1 =80 K

and  R2 = 8k.




3. (a) What is feedback amplifier ? Describe the merits and demerits of the feedback.

(b)  Sketch the circuit of phase shift oscillator . Explain its working and determine its frequency of


4. (a) Draw the circuit of Bisatable  multivibrator .Explain iots working.

(b) Draw and explain Darlington emitter follower circuit. Why the input impedance is higher  than

that of a single state emitter follower ?

5. (a) Define the following parameter.

(i) Input offset voltage   (ii) CMRR

(iii)  Slew rate   (iv)  Current mirror

(b)   Explain with diagram how an operator amplifier can be used as a differentiator  and an integrator.

6. (a)  What is difference between power amplifier  and voltage amplifier ? Draw circuit diagram of a

class B power amplifier and verify  explain .

(b)    What is meant by an ideal difference  amplifier ? Draw the circuit diagram of a emitter coupled

difference amplifier.

7. (a) Discuss turn –on and turn-off mechanism in SCR .

(b) Draw a half –wave SCR circuit . Indicate the current and voltage wave forms of the SCR.

8. Write short notes on any three of the following :

(a) PIN diode   (b) WIEN bridge oscillator

© IC -555 (d) UJT

(e) Convertor and inverter circuit.






RGPV Electronics Exams Questions Papers 3rd SEM Dec 2005

RGPV Exams Questions Papers 3rd SEM Dec 2005 Electronics

RGTU B.E. (Third semester) EXAMINATION, DEC, 2005

(Common for EC/EE/IP Engg.)



Note:      Attempt any five questions.  All question carry equal marks.

1. (a) (i)  For the given network shown in figure 1, determine the range of RL  AND IL  that will result in

VRL  being maintained at 10 V.

(ii)  Determine the maximum wattage rating of diode.



(b)  Compare the characteristics of Si and Get diode and determine which would you prefer for most

practical application.

2. (a) Find the transistor currents in the circuits of figure shown below. A silicon transistor with ? =100

and ICO = 20 nA.

(ii)  Repeat part (i) if a 2 k   emitter resistor is added to the circuit in figure.





(b)  Explain the early effect in BJT with the aid of necessary plots.

3. (a) State and explain the barkhausen criterion for oscillations.

(b) Describe the operations of Wien bridge oscillator using an op-amp . Derive the expression for

frequency of oscillations.

4. (a)  The circuit  of fig. 3 shown ahead has the following parameters.

R=4 K, R’ =40 K, RS = 10 k, hie  =1.1 k, hfe = 50, hoe =0

Find :

(i) Avf     (ii) Rif    (iii) Rof




(b)  Explain various advantages of negative in amplifiers.

5. (a) Describe the Darlington connection with the help of a circuit diagram. What are the advantages of

it? Explain the biasing in it.

(b)     Diffrencaite between clippers and champers.

6. (a) Define the following :

(i) CMRR  (ii) PSRR  (iii) Slew rate

(iv) Input offset current

(v)  Output offset voltage.

(b)     Draw the circuit of the following using an Op-amp and explain their operation :

7. (a) Draw and explain the characteristics of SCR.

(B)   Describe the solid state firing circuits using UJT.

8. (a) Write short notes on any two of the following :

(i)  Colpitts and Hartley oscillator

(ii)   Astable  multivabrator

(iii)  RC phase shift oscillator

(iv)   Photo – diode





RGPV Electronics Exams Questions Papers 3rd SEM June 2005

RGPV Exams Questions Papers 3rd SEM June 2005 Electronics

RGTU B.E. (Third semester) EXAMINATION, JUNE, 2005

(Common for EC/EE/IP Engg.)


Note:      Attempt any five questions.  All question carry equal marks.

1. (A) Define the following term for a P-N junction diode :

(i) Diffusion capacitance    (ii)  Transition capacitance

(iii) Static and dynamic resistance

(b)  A silicon diode operators at a forward voltage of 0.4 V.  Calculate the factor by which the current will

be multiplied when the temperature is increased from 25 to 150oC.

©    Sketch the amp. Characteristics of tunnel diode . Explain the negative resistance in tunnel  diode .

2. (a) For a full wave rectifier shown in ahed fig. 1, Calculate V d.c. , IIdiode and PIV if Np : Ns=3 : 1,V­in 155

Va.c. with 50 Hz.






(b) For the circuit shown in fig.2 , determine the minimum value of Ib to saturate the transistor.




3. (a) In the fig.3 , V as =-1 V, calculate VG, VS, ID if IDSS = 10 Ma, VGS  OFF  =_ 4v.





(b)  Draw and discuss the characteristics of P-channel depletion type MOSFET.

4.  (a)  In Fig. 4, V1 =2 V and V2 = 7.5 V draw the output waveform assume both diodes to be Si diode.






(b)  Design an astable multavibrator for the following specifications:

Vcc = 10 V,  ICsat  = 5mA , ?= 50, f=3  kHz and duty cycle = 50%.

5. (a) Determine the type of feedback and draw the equivalent circuit for determination of open loop

gain for the circuit shown in Fig. 5.





(b)  An amplifier has a gain G=5 provide a feedback to this network such that the gain of the amplifier

with feedback G becomes 100. If G is increased by 2% What is the percentage change in Gp ?

6. (a) Find C such that the circuit in fig. 6 oscillates.





(b) What is the maximum amount of phase shift provided by single RC section shown in fig. 7. Can an RC

circuit phase shift oscillator be made using two such section?




7.  (a)  For the circuit shown in fig. 8. Determine the gain Vo/  V i.  Assume om-amp to be ideal.



(b) Design an op-amp . circuit containing three inputs V1,  V2 and  V3  with the output Vout  equal to the

average of these inputs . How many op-amps will be needed if polarity is of no concern ?

8. Write short notes on any two of the following :

(a)  Turn ON and OFF mechanism of SCR

(ii)   Single phase controlled rectifier with resistive load.

(iii)  Solid state firing circuit using  UJTS .

RGPV Previous Questions Papers 3rd Semester Electronics Dec 2003

RGPV Previous Questions Papers 3rd Semester Electronics Dec 2003

RGTU B.E. (Third semester) EXAMINATION, DEC, 2003

(Common for EC/EE/IP Engg.)



Note:      Attempt any five questions.  Assume  missing data suitably.

1. (a) Define the following :

(i)   Cut-in (knee) voltage (ii) depletion layer (iii) reserve saturation current (ICBO)

(b)   For the circuit show in fig. 1, draw the load line. Determine the operating point and show it on the

load line. Assume VBE =0.7 volts.






2. (a) Draw the circuit diagram of L-C oscillator and explain its working.

(b)  Give classification of power amplifiers . What is PDmax  rating ? Explain.

3. (a) Define the following :

(i) CMRR  (ii) Offset voltage   (iii) Slew rate

(b) Draw circuit diagram of a difference amplifier using OP-AMP and derive an expression for its gain.

4. (a) Explain V-1 characterics of an SCR.

(b)  Discuss the working of a simple inverter .

5.(a) Explain the working of a clamper circuit with input and output wave forms.

(b) Draw the circuit diagram of a monostable multivibrator using 555 IC and explain its working.

6. (a) Show that the maximum conversion efficiency of a class –B amplifier system is 78.5 % .

(b) Draw circuit diagram of an emitter follower. Give its low frequency h-parameter model. Analysis

Its feedback mechanism (no diversion desired).

7. (a) Derive an expression for resonant frequency of a tank. (tuning) circuit of BJT amplifiers.

(b) Work out the following quantities for the circuit show in ahead fig.2

(i) a.c. emitter current

(ii) a.c. voltage at emitter base and collector

(iii) a.c. voltage gain

Assume hie = 250 , hfe  =50






8. Attempt any two of the following :

(i) Explain the working of a bridge rectifier . Also calculate PIV (peak inverse voltage) for the same.

(ii) Discuss the Boot stamping Techniques I brief. (need not to derive expressions)

(iii) Give the working of a Schmitt trigger circuit.

(iv) Give the working of a chopper circuit.



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(b)  Explain the working of enhancement model in a MOSFET with circuit symbol and characteristics .

3.  (a) Draw a self-bias circuit . Explain qualitatively  why such a circuit is an improvement on the fixed

bias as far  as stability is concerned . How is load line drawn for a self bias circuit ?

(b) Define h-parameter of a transmission . Find the input and output resistance in CE  configuration.

4. (a) Draw I circuit voltage series feedback amplifier. Derive the expression for the following :

(i)  Voltage gain with feedback AVF

(ii) Output resistance with feedback Rof

(b) Sketch the circuit of Wien bridge oscillator . Explain its working Determine the frequency of


5. (a) Draw the circuit of bitable  multavibrator . Explain its working with the help of wave forms.

(b)  Draw bootstrapped Darlington circuit and explain how this increase the input the input resistance.

6.    Explain the following with the aid of diagram :

(I) Integrator using OP-AMP

(ii) Instrumentation amplifier using OP-AMP

(iii) 555 timer in monostable mode

7. (a) Explain series and parallel connection  of SCR .

(b) Explain VI characteristics of SCR in detail.

8. Write short notes on any two of the following :

(i) Varactor

(ii) UJT

(iii) Power amplifier

(iv) Schmitt trigger