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 9 of 51

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Q81.
A 24 mm long conductor has a resistance of 128 ฮฉ. The change in resistance is 13.3 ฮฉ and change in length is 1.6 mm under tension. The gauge factor is

a.

1.2

b.

1.6

c.

2.1

d.

2.6

Discuss
Answer: (b).1.6
Q82.
Measuring of unknown voltage with a dc potentiometer loses its advantage of open circuit measurement when

a.

primary circuit battery is changed

b.

standardisation is done to compensate for drift

c.

voltage is larger than range of potentiometer

d.

range reduction by factor of 10 is employed

Discuss
Answer: (d).range reduction by factor of 10 is employed
Q83.
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
Q84.
The circuit of figure is used to measure the value Rx. Ammeter resistance Ra = 0.1 ฮฉ voltmeter resistance Rv = 5000 ฮฉ. 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 ฮฉ

b.

10 ฮฉ

c.

10.04 ฮฉ

d.

10.1 ฮฉ

Discuss
Answer: (c).10.04 ฮฉ
Q85.
If d1, d2, ..., dn are n individual deviations, the standard deviation is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q86.
In figure the values of Rx and Cx are

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q87.
If J is moment of Inertia, D is damping constant, C is spring constant, G is displacement constant and I is current throught the coil of DArsonval galvanometer, the equation of motion is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q88.
In ac bridge measurements, 'Wagner ground' means

a.

a special RC connection to eliminate stray magnetic effects

b.

a special RC connection to eliminate stray capacitance effects

c.

an unwanted and unintended ground connection

d.

a large metal plate buried in ground connected to one corner of bridge

Discuss
Answer: (b).a special RC connection to eliminate stray capacitance effects
Q89.
In a platinum RTD, the change in resistance for a temperature rise of 50° C is about

a.

2%

b.

10%

c.

20%

d.

40%

Discuss
Answer: (c).20%
Q90.
The gauge factor of a semiconductor strain gauge is about

a.

2

b.

10

c.

100

d.

1000

Discuss
Answer: (c).100
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