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 21 of 51

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Q201.
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
Q202.
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
Q203.
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
Q204.
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
Q205.
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
Q206.
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
Q207.
Two wattmeter method is suitable only for balanced loads.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q208.
A rectifier voltmeter using bridge rectifier and PMMC meter is calibrated to read rms value of sine wave. A triangular wave is applied to it and it reads 6.82 V. The rms value of triangular wave is

a.

about 6.82 V

b.

about 7.1 V

c.

about 6.5 V

d.

about 10 V

Discuss
Answer: (b).about 7.1 V
Q209.
A radiation thermometer is suitable for temperatures

a.

below 500°C

b.

below 100°C

c.

above 500°C

d.

above 1400°C

Discuss
Answer: (d).above 1400°C
Q210.
A sinusoidal signal is measured by CRO. The scale is set at 4 mV/cm. If vertical distance between positive and negative peaks is 6 cm, the peak value of ac signal is

a.

6 mV

b.

12 mV

c.

24 mV

d.

3 mV

Discuss
Answer: (b).12 mV
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