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 17 of 51

Discover more Topics under Electronics and Communication Engineering

Q161.
Assertion (A): A semiconductor strain gauge is more accurate than a resistance strain gauge.

Reason (R): The gauge factor of a semiconductor strain gauge is about 100 where as the gauge factor of a resistance strain gauge is only about 2.

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
Q162.
Current density has the dimensions

a.

IL

b.

IL¯²

c.

IL¯³

d.

I²L¯²

Discuss
Answer: (b).IL¯²
Q163.
The resistance of a dc galvanometer is 20 ฮฉ. A current of 10 mA causes full scale deflection. To convert it into 0-300 V voltmeter, we have to use a series resistance of

a.

30000 ฮฉ

b.

29980 ฮฉ

c.

6000 ฮฉ

d.

15 ฮฉ

Discuss
Answer: (b).29980 ฮฉ
Q164.
The current in a circuit is measured using a 150 : 1 CT If the ammeter reads 0.6 A, the circuit current is

a.

250 A

b.

90 A

c.

156 A

d.

144 A

Discuss
Answer: (b).90 A
Q165.
A volt ratio box should have low resistance.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q166.
A Hall effect transducer has KH = - 1 x 10¯โธ. If B = 1 Wb/m², I = 3 A and bismuth slab is 2 mm wide, the Hall voltage is

a.

-7.5 x 10¯โถ V

b.

-15 x 10¯โถ

c.

-20 x 10¯โด V

d.

-22.5 x 10¯โด V

Discuss
Answer: (b). -15 x 10¯โถ
Q167.
Two ammeters A and B both 0-10 A have internal resistance of 1 ฮฉ and 0.5 ฮฉ respectively. They are connected in parallel. If total current is 15 A, then

a.

IA = IB = 7.5 A

b.

IA = 5 A, IB = 10 A

c.

IA = 10 A, IB = 5 A

d.

IA = 9 A, IB = 6 A

Discuss
Answer: (b).IA = 5 A, IB = 10 A
Q168.
Which of the following is not correct?

a.

Voltmeter should have a very high resistance

b.

An ammeter should have a very low resistance

c.

A shunt should have a very low resistance

d.

An electronic voltmeter draws appreciable current from source

Discuss
Answer: (d).An electronic voltmeter draws appreciable current from source
Q169.
Assertion (A): Thermocouple instruments can be used for ac only.

Reason (R): Thermocouple instrument has a non linear scale.

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: (d).A is false R is true
Q170.
A meter has a resistance of 1 ฮฉ and full scale deflection current of 1 mA. To convert into an ammeter of 1 A range, the shunt resistance should be

a.

1000 ฮฉ

b.

1 ฮฉ

c.

0.01 ฮฉ

d.

0.001 ฮฉ

Discuss
Answer: (d).0.001 ฮฉ
Page 17 of 51