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# 2014 Acharya Nagarjuna University Bapatla Engineering College - Electrical and Electronic Measurements - B.Tech 2nd Year - 2nd Semester - June 2014 Question paper

 Course: University/board: Acharya Nagarjuna University

If you are looking for the previous question papers of Electrical and Electronic Measurements - Bapatla Engineering College - B.Tech, you can stop your search here. This is the original question paper from the B.Tech second year second semester exam conducted by Bapatla Engineering College in June 2014. Feel free to store a copy and use it to prepare for your upcoming exams.

II/IV B.Tech Degree Examinations, June 2014

Second Semester

Electrical and Electronic Measurements

Time : 3 hours

Maximum Marks : 60

Answer ONE question from each Unit

1. Briefly explain following [12 x 1 = 12M]
a) What is a delay line?
b) What is the use of swamping resistor in PMMC instrument?
c) What are the advantages of using thermocouple instrument?
d) List some of the front panel controls of function generator?
e) Write differences between AC and DC bridges?
f) What is an instrument transformer?
h) Define the term secondary emission ratio.
i) Name at least five front panel controls in CRO.
j) Define the term harmonic distortion.
k) Explain the procedure to find unknown frequency using Lissajous figures?
l) What are the precautions to be taken in signal generator applications?

UNIT - I [1 x 12 = 12M]

2. a) Classify and explain the types of errors occurring in measurements.
2. b) Define Voltmeter Sensitivity? What is loading effect of a DC Voltmeter with an example? (OR)
3. a) Describe the construction and working of shunt type ohm meter.
3. b) Explain working of electrodynamometer in power measurement.

UNIT - II [1 x 12 = 12M]

4. a) Draw the Maxwell's bridge circuit and derive the expression for the unknown elements at balance.
4. b) Explain the working of Dual Slope DVM. (OR)
5. a) Explain the block diagram of true RMS responding voltmeter.
5. b) Explain the method of AC measurement using rectifier type instruments.

UNIT - III [1 x 12 = 12M]

6. a) Explain the measurement of voltage, frequency and phase using CRO.
6. b) Draw the block diagram of dual trace oscilloscope and explain its working. (OR)
7. a) Draw and explain the working of sampling oscilloscope.
7. b) Explain the operation of 10:1 probe.

UNIT - IV [1 x 12 = 12M]

8. a) Explain the principle and working of function generator.
8. b) Draw the block diagram of heterodyne type spectrum analyzer and explain its working. (OR)
9. a) Draw the block diagram of a wave analyzer and explain its working.
9. b) Explain the working of a frequency divider generator.

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