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 19 of 51

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Q181.
Assertion (A): A low power factor wattmeter has special constructional features to ensure accurate measurement.

Reason (R): Extension of wattmeter range in dc circuit can be easily done by using current and potential transformer.

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: (c).A is true R is false
Q182.
The scale of dynamometer wattmeter is non linear.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (b).False
Q183.
Magnetic deflection is inversely proportional to

a.

voltage

b.

(voltage)^0.5

c.

(voltage)^1.5

d.

(voltage)^2

Discuss
Answer: (b).(voltage)^0.5
Q184.
The current passing through a resistance of 100 ± 0.2% ฮฉ is 2 ± 0.5% A. The limiting error in computation of power will be

a.

± 0.7%

b.

± 0.9%

c.

± 1.2%

d.

± 0.3%

Discuss
Answer: (c).± 1.2%
Q185.
If the secondary burden of a CT 15 VA and secondary current is 5 A, the load impedance of CT is

a.

0.6 ฮฉ

b.

5 ฮฉ

c.

6 ฮฉ

d.

10 ฮฉ

Discuss
Answer: (a).0.6 ฮฉ
Q186.
Consider the following instruments

1. Tangent galvanometer
2. Rayleigh current balance
3. Household energy meter
4. Hot wire ammeter

Out of above absolute instruments are

a.

1, 2 and 3

b.

1, 2 and 4

c.

1 and 2

d.

2, 3 and 4

Discuss
Answer: (c).1 and 2
Q187.
A 0-150 voltmeter has a guaranteed accuracy of 1% of full scale reading. If actual reading is 83 V, the percentage error is

a.

0.83%

b.

1%

c.

1.81%

d.

none of the above

Discuss
Answer: (c).1.81%
Q188.
In a CRO, the frequency of output of time base generator

a.

is only one constant value

b.

is adjustable

c.

varies automatically

d.

either (a) or (c)

Discuss
Answer: (b).is adjustable
Q189.
If A = 131 ± 4 and B = 106 ± 4, the percentage range of doubt in A - B is

a.

4%

b.

8%

c.

16%

d.

32%

Discuss
Answer: (d).32%
Q190.
Two resistance R1 and R2 are connected in series R1 = 528 ± 5 ฮฉ and R2 = 325 ± 3ฮฉ. The total resistance will be

a.

853 ± 2 ฮฉ

b.

853 ± 5 ฮฉ

c.

853 ± 3 ฮฉ

d.

853 ± 8 ฮฉ

Discuss
Answer: (d).853 ± 8 ฮฉ
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