UPTU Old Year Questions Papers Electronics Measurements & Instrumentation 2009-10
UPTU Old Year Questions Papers
B Tech 3rd Semester
Note : (i) Attempt all questions.
(ii) Each question carries equal marks.
1. Attempt any four parts of the following :
(a) Distinguish between the direct and indirect method of measurements. Give examples.
(b) Explain the terms :
(i) Static error
(ii) Static correction
(iii )Relative error.
(c) Define the terms :
(d) Define :
(i) mean value
(e) List the advantages of electronic measurement.
(f) How the performance characteristics of an instrument are classified ?
2. Attempt any four parts of the following :
(a) Differentiate between the following :
(i) Transducer and inverse transducers
(ii) Analog and digital transducers.
(b) Describe the working and construction of resistance thermometers.
(c) How is a differential output taken from an inductive transducers ?
(d) Describe the different modes of operation of piezo-electric transducers.
(e) Derive the general equation for an a.c. bridges.
(f) Derive the equation of balance for an Anderson’s bridge.
3. Attempt any two parts of the following
(a) Explain why PMMC instruments are most widely used instruments, also describe the working of RMS responding voltmeters.
(b) Explain the construction and working of electronic-analog ohm meter. Also briefly describe the working principle of multimeter.
(c) Write short notes on :
(i) AC voltmeter and ammeter
(ii) Application of LCD
4. Attempt any two parts of the following :
(a) Describe the following terms used in conjuction with digital to analog conversion :
(i) Discrete levels
(iii) Quantization error
(iv) Decision levels
(v) Aparture time.
Describe in details the dual slope method of analog to digital conversion.
(b) Explain the functioning of a 5×7 LED matrix display. Also explain the sensitivity of digital meters and accuracy specification of digital meters.
(c) Write short note on : Performance characteristics of D/A converter and its application
5. Attempt any two parts of the following :
(a) Draw and explain the block diagram of general purpose CRO. How frequency and phase angle are measured by CRO ?
(b) Write short notes on :
(i) Types of probe
(ii) Digital signal generator.
(c) Describe the basic circuit of spectrum analyzer. Also explain the different types distortion caused by amplifier.