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 22 of 51

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Q211.
Two resistances R1 = 18.7 ฮฉ. and R2 = 3.624 ฮฉ in series. The total resistance to the appropriate number of significant figures is

a.

22.324 ฮฉ

b.

22.32 ฮฉ

c.

22.3 ฮฉ

d.

22 ฮฉ

Discuss
Answer: (c).22.3 ฮฉ
Q212.
The input impedance of CRO is about

a.

zero

b.

10 ฮฉ

c.

100 ฮฉ

d.

one mega ohm

Discuss
Answer: (d).one mega ohm
Q213.
Which of the following is not correct in respect of electrostatic instrument?

a.

It is essentially a voltmeter

b.

It is suitable for only high voltages

c.

It has a uniform scale

d.

It can be used for both ac and dc

Discuss
Answer: (c).It has a uniform scale
Q214.
The wave applied to X plates, for ohtaining trace of voltage wave, is

a.

sawtooth wave

b.

sinusoidal wave

c.

rectangular wave

d.

either (a) or (c)

Discuss
Answer: (a).sawtooth wave
Q215.
The response of a thermistor overs the whole of its temperatures range is

a.

linear

b.

non-linear

c.

almost linear

d.

either (a) or (c)

Discuss
Answer: (b).non-linear
Q216.
A resistance is measured by voltmeter-ammeter method. The voltmeter is 0-250V, ± 1% accuracy and ammeter is 0-5 A, ± 1 % accuracy. The readings of voltmeter and ammeter are 100 V and 2 A respectively. The error in the measured resistance can be

a.

± 1%

b.

± 2%

c.

± 5%

d.

± 10%

Discuss
Answer: (c).± 5%
Q217.
It is required to study transients during switching process. Which CRO should be preferred?

a.

Ordinary CRO

b.

Dual beam CRO

c.

Dual trace CRO

d.

Storage oscilloscope

Discuss
Answer: (d).Storage oscilloscope
Q218.
Assertion (A): In loss of charge method, it is preferable to use an electronic voltmeter.

Reason (R): The resistance of electronic voltmeter 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
Q219.
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°
Q220.
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
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