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 39 of 51

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Q381.
The advantage of LVDT over inductive bridge type transducer is that

a.

it gives high output for small changes in core position

b.

it can be used over a temperature range of - 265°C to 600°C

c.

it can measure displacement of moving object

d.

the error due to stray magnetic field is less

Discuss
Answer: (a).it gives high output for small changes in core position
Q382.
In a Weston synchronoscope the deflecting torque is zero when

a.

currents in fixed and moving coils are in phase

b.

currents in fixed and moving coils are out of phase by 90°

c.

currents in fixed and moving coils are out of phase by 60°

d.

none of the above

Discuss
Answer: (b).currents in fixed and moving coils are out of phase by 90°
Q383.
Assertion (A): Megger is used to check insulation resistance of cables.

Reason (R): Insulation resistance of cables is very high.

a.

Both A and R are true and R is correct explanation of A

b.

Both A and R are true but R is not correct explanation of A

c.

A is true R is false

d.

A is false R is true

Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Q384.
Assertion (A): A power factor meter operates on dynamometer principle.

Reason (R): A power factor meter does not have a control spring.

a.

Both A and R are true and R is correct explanation of A

b.

Both A and R are true but R is not correct explanation of A

c.

A is true R is false

d.

A is false R is true

Discuss
Answer: (b).Both A and R are true but R is not correct explanation of A
Q385.
Assertion (A): A radiation pyrometer is very suitable for high temperature measurement.

Reason (R): When temperature is high, a physical contact between hot body and thermometer is not desirable.

a.

Both A and R are true and R is correct explanation of A

b.

Both A and R are true but R is not correct explanation of A

c.

A is true R is false

d.

A is false R is true

Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Q386.
Burden of an instrument transformer is expressed in

a.

A

b.

V-A

c.

ฮฉ

d.

watt

Discuss
Answer: (b).V-A
Q387.
Which of the following devices should be used for accurate measurement of a low dc voltage?

a.

Small range moving coil voltmeter

b.

Dc potentiometer

c.

Small range thermocouple voltmeter

d.

Hot wire instrument

Discuss
Answer: (b).Dc potentiometer
Q388.
An electrodynamometer instrument has the advantage of

a.

freedom from hysteresis and eddy currents because air cored coils are used

b.

freedom from hysteresis and eddy currents because cores of coils have special ferromagnetic material

c.

high torque/weight ratio

d.

low cost

Discuss
Answer: (a).freedom from hysteresis and eddy currents because air cored coils are used
Q389.
The dimensions of permittivity are

a.

L¯³M¯¹T²Q²

b.

L¯¹M¯¹T²Q²

c.

L²MT¯¹Q¯¹

d.

L¯²M¯¹T²Q²

Discuss
Answer: (a).L¯³M¯¹T²Q²
Q390.
It is required to measure a low magnitude high frequency current. The proper instrument is

a.

moving iron

b.

dynamometer

c.

thermocouple

d.

induction

Discuss
Answer: (c).thermocouple
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