# Pune University Exam Paper

## (2008 Pattern) – (Elective – III) (Sem. – II)

Time :3 Hours]                                                                                              [Max. Marks :100

Instructions to the candidates:

1)            Answer three questions from Section -1 and three questions from Section – II.

2)            Answers to the two sections should be written in separate answer books.

3)            Pigures to the right indicate full marks.

4)            Neat diagrams must be drawn wherever necessary.

6)            Assume suitable additional data if necessary.

7)            Use of logarithmic tables, slide rule, electronic non-programmable pocket calculator is allowed.

SECTION – I

QIA a) Explain following terms and give example of each with any instrument. 

i)                 Accuracy.

ii)                Linearity.

iii)                Sensitivity.

iv)               Resolution.

b) Explain calibration, calibration standards and traceability.

OR

Q2) a) A set of voltage measurement by five observers is recorded as 340m Volts, 350m Volts, 400m Volts, 375m Volts and 380m Volts. Calculate

i)                 Arithmetic mean.

ii)                Average deviation.

iii)                Standard deviation and

iv)               Variance.

b)               Draw a Typical instrument block diagram. Explain Simple 8 Distributing types of measurements in detail.                                                                                         

Q3) a) What is the significance of Q-factor? Explain basic ‘Q’ meter with neat

diagram.                                                                                                                                                                                                                                            

b)             With the help of neat diagram, explain the method of True RMS measurement.                                                                                                                                         

OR

Q4) a) With the help of block diagram explain vector impedance meter. 

b)             What are different types of DVM? With the help of block diagram explain



i)                 Ramp-type DVM and

ii)                Successive-approximation DVM.

Q5) a) Explain the effect of resistive, inductive and capacitive load on CRO probes. List various types of CRO probes. Explain any one type of probe in detail.    

b) line is required in vertical section of CRO? 

OR

Q6) a) Explain with neat block diagram digital storage oscilloscope.                                                                                                                                                                                                     

b)             Explain the triggering controls used in analog and digital oscilloscope. What are the special trigger settings available only in digital oscilloscope?

 SECTION – II

Q7) a) Draw the block diagram of a logic analyzer and explain its operation.

Explain display methods used in analysis using logic analyzer. 

b) Explain with neat diagram heterodyne wave analyzer.

OR

Q8) a) Explain swept super-heterodyne spectrum analyzer with neat block diagram.                                                                                                                                                                        

b)            Explain FFT analyzer with neat block diagram. 

c)             Explain thermocouple power meter with neat block diagram.

Q9) a) Draw the block diagram of a Direct Digital Synthesizer (DDS). Explain its operation. What are its advantages and limitations over other techniques?                             

b)             Draw the block diagram of an Arbitrary Waveform Generator (AWG). Explain its operation. What is meant by vertical resolution?                                                               

OR

QIO) a) Draw and explain block diagram of network analyzer and state its applications.                

b) Explain test set up for conducted EMI. 

QII) Write short notes on :

a)             Features of LABVIEW.

b)            Virtual instruments and its components. 

OR

Q12) a) Explain in detail Network Connection Model.                                                                                      

b)             What are the requirements of the Automatic Test Equipments (ATE).