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 4 of 51

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Q31.
If d1, d2, ..., dn are n individual deviations, the standard deviation is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q32.
In figure the values of Rx and Cx are

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q33.
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
Q34.
A meter with a resistance of 100 Ω and a full scale deflection of current of 1 mA is to be converted into voltmeter of 0 - 5 V range. The multiplier resistance should be

a.

490 Ω

b.

5000 Ω

c.

4900 Ω

d.

5100 Ω

Discuss
Answer: (c).4900 Ω
Q35.
In a resistance strain gauge, G = 2, stress = 1050 kg/cm², R = 1000 Ω. The value of ΔR will be

a.

2 Ω

b.

3 Ω

c.

4 Ω

d.

1 Ω

Discuss
Answer: (d).1 Ω
Q36.
The household energy meter is

a.

indicating instrument

b.

recording instrument

c.

integrating instrument

d.

none of the above

Discuss
Answer: (c).integrating instrument
Q37.
A standard cell of 1.0185 V is used with a slide wire potentiometer. The balance was obtained at 60 cm. When an unknown emf was connected, the balance was obtained at 82 cm. The magnitude of unknown emf is

a.

1.39 V

b.

0.75 V

c.

13.9 V

d.

7.45 V

Discuss
Answer: (a).1.39 V
Q38.
A dynamometer wattmeter is connected in ac circuit. The measured power is

a.

rms power

b.

average power

c.

peak power

d.

instantaneous power

Discuss
Answer: (b).average power
Q39.
Loss of charge method is suitable for medium resistances.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q40.
In two wattmeter method of 3 phase power measurement, when does one wattmeter read negative

a.

when power factor is less than 0.5 lagging

b.

when power factor is greater than 0.5 lagging

c.

when power factor is less than 0.5

d.

when power factor is unity

Discuss
Answer: (c).when power factor is less than 0.5
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