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.
The household energy meter is

a.

indicating instrument

b.

recording instrument

c.

integrating instrument

d.

none of the above

Discuss
Answer: (c).integrating instrument
Q32.
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
Q33.
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
Q34.
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
Q35.
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
Q36.
It is required to measure angular position. Out of the transducers

1.Circular potentiometer
2. LVDT
3. E pick up
4. Synchro

The proper devices are

a.

1, 2, 3, 4

b.

2 and 3

c.

1, 2, 4

d.

1 and 4

Discuss
Answer: (d).1 and 4
Q37.
To increase Q factor of a coil, the wire should be

a.

long

b.

thin

c.

thick

d.

long and thin

Discuss
Answer: (c).thick
Q38.
An ammeter of 0-25 A range has a guaranteed accuracy of 1% of full scale reading. The current measured is 5 A. The limiting error is

a.

2%

b.

2.5%

c.

4%

d.

5%

Discuss
Answer: (d).5%
Q39.
The coil of a moving iron instrument has a resistance of 500 ฮฉ and an inductance of 1 H. It reads 250 V when a 250 V dc is applied. If series resistance is 2000 ฮฉ, its reading when fed by 250 V, 50 Hz ac will be

a.

260 V

b.

252 V

c.

250 V

d.

248 V

Discuss
Answer: (d).248 V
Q40.
In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is

a.

1

b.

0.5

c.

0

d.

0.8

Discuss
Answer: (b).0.5
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