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 6 of 51

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Q51.
Which of the following voltmeters would you use for measuring voltage across 20 kฮฉ resistance?

a.

Voltmeter having a resistance of 5 kฮฉ

b.

Voltmeter having a sensitivity of 1 kW/V

c.

Voltmeter having sensitivity of 10 kW/V

d.

None of the above

Discuss
Answer: (c).Voltmeter having sensitivity of 10 kW/V
Q52.
A single phase energy meter has the rating 1200 resolutions/ kWh. If a 500 W electric gadget is used for 4 hours, the energy meter will make

a.

1200 revolutions

b.

1800 revolutions

c.

2100 revolutions

d.

2400 revolutions

Discuss
Answer: (d).2400 revolutions
Q53.
Assertion (A): De sauty's bridge is suitable only for pure capacitor.

Reason (R): Capacitors are mostly perfect.

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
Q54.
In which of the transformer is the secondary nearly short circuited under normal operating conditions?

a.

CT

b.

PT

c.

Distribution transformer

d.

Power transformer

Discuss
Answer: (a).CT
Q55.
The Lissajous pattern observed on screen of CRO is a straight line inclined at 45° to x axis. If X-plate input is 2 sin ฯ‰t, the Y-plate input is

a.

2 sin ฯ‰t

b.

2 sin (ฯ‰t + 45°)

c.

2 sin (ฯ‰t - 45°)

d.

2โˆš2 sin ฯ‰t + 45°)

Discuss
Answer: (a).2 sin ฯ‰t
Q56.
The angle ฮด for a mica capacitor is about

a.

25°

b.

15°

c.

5°

d.

1°

Discuss
Answer: (d).1°
Q57.
A digital voltmeter has a read out range from 0 to 999 counts. If the full scale reading is 9.999 V, the resolution is

a.

1 V

b.

0.01 V

c.

1 mV

d.

1 ฮผV

Discuss
Answer: (c).1 mV
Q58.
The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240 x 10¯โถ N-m on full scale. If B = 1 Wb/m², range of meter is

a.

1 mA

b.

2 mA

c.

3 mA

d.

4 mA

Discuss
Answer: (b).2 mA
Q59.
Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to

1. mismatch between FET parameters
2. difference in values of resistances used in circuit
3. variation in supply voltage.

Of the statements, the correct statements are

a.

1 and 2

b.

1, 2, 3

c.

2, 3

d.

1, 3

Discuss
Answer: (a).1 and 2
Q60.
A moving coil instrument has a resistance of 0.5 ฮฉ and a full scale deflection of 0.1 A. To convert it into an ammeter of 0-10 A the shunt resistance should be

a.

0.004 ฮฉ

b.

0.005 ฮฉ

c.

0.05 ฮฉ

d.

0.1 ฮฉ

Discuss
Answer: (b).0.005 ฮฉ
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