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EE3403 Model QB

This document is a model exam for the B.E. Electrical and Electronics Engineering program at Einstein College of Engineering, covering the Measurements and Instrumentation course. It includes questions on various topics such as error analysis, measurement techniques, and instrumentation principles. The exam is divided into two parts, with Part A consisting of short answer questions and Part B containing detailed descriptive questions.

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Saravanan A
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31 views2 pages

EE3403 Model QB

This document is a model exam for the B.E. Electrical and Electronics Engineering program at Einstein College of Engineering, covering the Measurements and Instrumentation course. It includes questions on various topics such as error analysis, measurement techniques, and instrumentation principles. The exam is divided into two parts, with Part A consisting of short answer questions and Part B containing detailed descriptive questions.

Uploaded by

Saravanan A
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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EINSTEIN COLLEGE OF ENGINEERING, TIRUNELVELI - 12

MODEL EXAM
B.E – ELECTRICAL AND ELECTRONICS ENGINEERING
Semester – IV
EE3403 – MEASUREMENTS AND INSTRUMENTATION
Regulation – 2021
PART-A
1. Differentiate Reproducibility and Repeatability.
2. How is median calculated?
3. A voltmeter read as follows: 112.5, 112.0, 112.2, 112.3 and 112.4. If the actual reading is 112.1V, find the
random error.
4. Write the expression for the deflecting and controlling torques in a moving coil meter, defining each symbol
in it.
5. How Kelvins double bridge differ from Wheatstone bridge.
6. Which type of AC bridge is used for measurement of capacitance? And writes its formula.
7. Define Hall effect.
8. Write any three methods used for measurements of temperature.
9. List out the types of analog to digital converters.
10. List out various advantages of virtual instrumentation.
PART – B (5 x 13 = 65 Marks)
1. With aid of block diagram showing the basic functional elements of a general instrument and explain (13)
the functions of each block with example.
2. Describe in detail the different types of dynamic errors in a measurement system. (13)

3. Enumerate the torque equation of the moving iron instrument and prove that its scaling is non- (13)
uniform.
4. Explain the principle construction and working of single phase induction type energy meter also list (13)
its merits and demerits.
5. Derive the expressions for measurement of smaller value of unknown resistance with a neat bridge (13)
circuit.
6. Draw the circuit for instrumentation amplifier and explain its operation with voltage expression. (13)
7. With a suitable transducer explain the measurement of
i. Pressure (6)
ii. Temperature (7)

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8. Explain the working principle of Piezoelectric transducer with neat sketch. (13)

9. With neat diagram explain the working of successive approximation type ADC with suitable (13)
example.
10. Draw the block diagram of a DSO and explain the working. Compare between ASO and DSO (13)
performance.
11. A set of independent current measurements were taken by six observers and were recorded as (15)
12.8A, 12.2A, 12.5A, 13.1A, 12.9A and 12.4A. Calculate (i) the arithmetic mean, (ii) the deviations
from the mean (iii) the average deviation (iv) the standard deviation and (iv) variance.
12. A correctly adjusted, single phase, 240 V induction watthour meter has a meter constant of 600 (15)
revolutions per kWh. Determine the speed of the disc, for a current of 10 A at a power factor of 0.8
lagging. If the lag adjustment is altered so that the phase angle between voltage flux and applied
voltage is 86°. Calculate the error introduced at (i) unity p.f. (ii) 0.5 p.f. lagging.

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