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 31 of 51

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Q301.
The increase in intensity of trace in a CRO causes a change in

a.

beam current

b.

frequency of time base

c.

gain of Y amplifier

d.

accelerating voltage

Discuss
Answer: (a).beam current
Q302.
A diode peak reading VTVM and thermocouple meter are connected across output of an amplitude modulated circuit. In the absence of modulation both meters read 10 V. When sinusoidal AM is applied, VTVM reads 15V The reading of thermocouple meter will be

a.

10 V

b.

12.5 V

c.

14.1 V

d.

15 V

Discuss
Answer: (a).10 V
Q303.
The resistance of voltmeter affects the accuracy of measurement in loss of charge method.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q304.
In a hot wire instrument, the deflection is proportional to

a.

peak value of ac current

b.

average value of ac current

c.

rms value of ac current

d.

either (a) or (b)

Discuss
Answer: (a).peak value of ac current
Q305.
A permanent magnet moving coil meter can be used as

a.

ac only

b.

dc only

c.

both ac and dc

d.

low frequency ac and dc

Discuss
Answer: (d).low frequency ac and dc
Q306.
If temperature increases by about 50°, the resistance of thermistor changes to

a.

half of its initial value

b.

twice of its initial value

c.

eight times of its initial value

d.

one eight of its initial value

Discuss
Answer: (d).one eight of its initial value
Q307.
Which of the following draws minimum power from source?

a.

PMMC

b.

Electronic voltmeter

c.

Electrostatic voltmeter

d.

Moving iron voltmeter

Discuss
Answer: (b).Electronic voltmeter
Q308.
The range of RTD using platinum is about

a.

-100° C to 700°C

b.

-200°C to 1000°C

c.

100°C to 1000°C

d.

about 500°C

Discuss
Answer: (a).-100° C to 700°C
Q309.
A digital voltmeter has a 4 1/2 digit display. The 1 V range can measure voltage up to

a.

0.9999 V

b.

1.9999 V

c.

0.199 V

d.

9.999 V

Discuss
Answer: (c).0.199 V
Q310.
Consider the following statements as regards induction and dynamometer wattmeters

1. Dynamometer wattmeters can be used for dc only.
2. Induction wattmeter has higher torque and dynamometer wattmeter.
3. Induction wattmeter is less accurate, has more power consumption and more weight than dynamometer wattmeter.

Which of the above statements are correct?

a.

1 only

b.

1 and 2 only

c.

2 and 3 only

d.

1 and 3 only

Discuss
Answer: (c).2 and 3 only
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