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 13 of 51

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Q121.
A moving coil meter has 10 ฮฉ resistance and requires 40 mA for full scale deflection. The shunt resistance required to convert it into 0-2 A ammeter is

a.

0.1021 ฮฉ

b.

0.2041 ฮฉ

c.

0.256 ฮฉ

d.

0.4210 ฮฉ

Discuss
Answer: (b).0.2041 ฮฉ
Q122.
Which of the following instruments can be used for dc as well ac upto a few MHz?

1. Moving iron instrument
2. Thermocouple instrument
3. Induction instrument
4. Moving coil instrument

Select the correct answer as per following codes

a.

2 only

b.

2 and 3 only

c.

1, 2 and 3 only

d.

2 and 4 only

Discuss
Answer: (a).2 only
Q123.
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
Q124.
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
Q125.
If d1, d2, ..., dn are n individual deviations, the standard deviation is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q126.
In figure the values of Rx and Cx are

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q127.
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
Q128.
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
Q129.
Assertion (A): Strain measurement using strain gauge invariably requires a dummy strain gauge.

Reason (R): The resistance of strain gauge depends on temperature.

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
Q130.
If a shunt of 200 ฮฉ resistance is used with a galvanometer of 1000 ฮฉ resistance, the multiplying power is

a.

6

b.

5

c.

1/5

d.

1/6

Discuss
Answer: (a).6
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