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 27 of 51

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Q261.
The torque in induction wattmeters due to

a.

capacitive current

b.

electrostatic effect

c.

hall effect

d.

eddy currents

Discuss
Answer: (d).eddy currents
Q262.
During testing of an energy meter, the energy recorded by meter was 0.05 kWh and correct energy was found to be 0.09 kWh. The error and correction respectively are

a.

-0.01 kWh and 0.01 kWh

b.

0.01 kWh and -0.01 kWh

c.

-0.01 kWh and ± 0.01 kWh

d.

± 0.01 kWh and 0.01 kWh

Discuss
Answer: (a).-0.01 kWh and 0.01 kWh
Q263.
Two resistances are : R1 = 36 ฮฉ ± 1.89 ฮฉ and R2 = 75 ฮฉ ± 3.75 ฮฉ. The sum R1 + R2 along with limiting error is

a.

111 ฮฉ ± 1.8 ฮฉ

b.

111 ฮฉ ± 3.75 ฮฉ

c.

111 ฮฉ ± 5.55 ฮฉ

d.

111 ฮฉ ± 1.95 ฮฉ

Discuss
Answer: (c).111 ฮฉ ± 5.55 ฮฉ
Q264.
An instrument of accuracy class 1 can have an error equal to

a.

+ 1% of reading

b.

± 1% of reading

c.

± 1% of full scale deflection

d.

+ 1% of full scale deflection

Discuss
Answer: (c).± 1% of full scale deflection
Q265.
An induction wattmeter can be used for ac only.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q266.
To measure a resistance of about 8 ohms we should use

a.

Kelvin's double bridge

b.

Wheatstone bridge

c.

Meggar

d.

Either (b) or (c)

Discuss
Answer: (b).Wheatstone bridge
Q267.
For measuring temperatures below 800°C with high accuracy, the best instrument is

a.

optical pyrometer

b.

thermistor based thermometer

c.

GaAs junction diode thermometer

d.

platinum resistance thermometer

Discuss
Answer: (d).platinum resistance thermometer
Q268.
Panel instruments are generally mounted vertically.

a.

True

b.

False

c.

May be True or False

d.

can't say

Discuss
Answer: (a).True
Q269.
Assertion (A): Many instruments use eddy current damping.

Reason (R): Eddy currents set up a magnetic flux which opposes the original movement which generates them.

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: (a).Both A and R are true and R is correct explanation of A
Q270.
A generated voltage is equally dependent on three resistances R1, R2, R3 and its value is V = (R1R2)/R3. If tolerance of each resistor is 0.1%, the maximum error in voltage is

a.

0.3%

b.

± 0.3%

c.

0.1%

d.

± 0.1%

Discuss
Answer: (b).± 0.3%
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