Measurements and Instrumentation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Measurements and Instrumentation, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Measurements and Instrumentation MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Measurements and Instrumentation mcq questions that explore various aspects of Measurements and Instrumentation problems. Each MCQ is crafted to challenge your understanding of Measurements and Instrumentation principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Measurements and Instrumentation MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Measurements and Instrumentation. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Measurements and Instrumentation knowledge to the test? Let's get started with our carefully curated MCQs!

Measurements and Instrumentation MCQs | Page 3 of 51

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Q21.
If M is mutual inductance between fixed and moving coils and θ is deflection of dynamometer instrument, then

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q22.
If σ is standard deviation, variation is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q23.
An average responding voltmeter using full wave rectifier has been calibrated to read 1 V for 1 V rms sinusoidal input. For 1 V peak to peak square wave input, the meter reading will be

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q24.
For critical damping, the resistance in D'Arsonval galvanometer circuit should be equal to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q25.
In figure, the reading of wattmeter will be proportional

a.

V I cos θ

b.

√3 VI cos θ

c.

√3 VI sin θ

d.

V I sin θ

Discuss
Answer: (c).√3 VI sin θ
Q26.
Figure shows the equivalent circuit of resistor. The resistor is non-inductive when

a.

R = L/C

b.

LR = √L/C

c.

L = CR²

d.

C = LR²

Discuss
Answer: (c).L = CR²
Q27.
The damping ratio, in D'Arsonval galvanometer is equal to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q28.
If φsh is flux of shunt magnet, φse is flux of series magnet, ish is eddy current due to φse, the torque in an induction wattmeter is proportional to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q29.
If Eb is the potential of accelerating anode, the energy of electrons as they emerge from electron gun is proportional to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q30.
The circuit of figure is used to measure the value Rx. Ammeter resistance Ra = 0.1 Ω voltmeter resistance Rv = 5000 Ω. It Rx1 and Rx2, are the measured values of Rx with switch in position 1 and 2, the mean of Rx1, and Rx2, is

a.

9.98 Ω

b.

10 Ω

c.

10.04 Ω

d.

10.1 Ω

Discuss
Answer: (c).10.04 Ω
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