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 44 of 51

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Q431.
Assertion (A): A dc potentiometer measures the true open circuit emf of a source.

Reason (R): At balance point, a dc potentiometer does not draw any current from the source.
Discuss
Answer: (a).Both A and R are true and R is correct explanation of A
Discuss
Answer: (a).horizontally
Discuss
Answer: (a).closeness of indicated value to the actual value
Q434.
If ฯƒ standard deviation, probable error
Discuss
Answer: (c).± 0.6745 ฯƒ
Q435.
Assertion (A): In two wattmeter method of 3 phase power measurement, one of the wattmeters would read negative if power factor of load is less than 0.5.

Reason (R): In two wattmeter method of 3 phase power measurement, both the wattmeters would show equal readings if power factor of load is unity.
Discuss
Answer: (b).Both A and R are true but R is not correct explanation of A
Q436.
In a megger the moving coil meter has a permanent magnet.
Discuss
Answer: (a).True
Q437.
The accuracy of a multimeter is about
Discuss
Answer: (b).± 3%
Q438.
Induction wattmeter is an absolute instrument.
Discuss
Answer: (b).False
Discuss
Answer: (b).the number of primary turns is very small as compared to number of secondary turns.
Q440.
The time base of a high frequency CRO whose screen diameter is 10 cm is set at 10 ฮผ sec/cm. The lowest frequency which can be fully displayed on the screen is
Discuss
Answer: (c).equal to 10 kHz