Measurement of Power MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Measurement of Power, a fundamental topic in the field of Electrical Measurement and Instrumentation. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Measurement of Power 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 Measurement of Power mcq questions that explore various aspects of Measurement of Power problems. Each MCQ is crafted to challenge your understanding of Measurement of Power principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electrical Measurement and Instrumentation tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Measurement of Power MCQs are your pathway to success in mastering this essential Electrical Measurement and Instrumentation topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Measurement of Power. 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 Measurement of Power knowledge to the test? Let's get started with our carefully curated MCQs!

Measurement of Power MCQs | Page 9 of 11

Q81.
The three coils are ________
Discuss
Answer: (a).star connected
Discuss
Answer: (b).a rotating magnetic field
Q83.
Eddy e.m.f produces a torque.
Discuss
Answer: (a).True
Q84.
Disc rotation is determined by ________
Discuss
Answer: (b).an arrow
Q85.
In the Two wattmeter method of measuring power in a balanced three-phase circuit, one wattmeter shows zero and the other positive maximum. The load power factor is?
Discuss
Answer: (b).0.5
Q86.
Two watt meters, which are connected to measure the total power on a three-phase system supplying a balanced load, read 10.5 kW and – 2.5 kW respectively. What is the total power?
Discuss
Answer: (d).8.0 kW
Q87.
Power flowing in 3-phase, 3-wire system is measured by two wattmeter whose readings are 7000 W and -2500 W. If the voltage of the circuit is 400 V, then what will be the value of capacitance introduced in each phase to make one wattmeter reads zero? The frequency is 50 Hz.
Discuss
Answer: (b).668.6 μF
Q88.
A single-phase load is connected between R and Y terminals of a 220 V, symmetrical, 3-phase, 4 wire systems with phase sequence RYB. A watt-meter is connected in the system. The watt-meter will read (pf = 0.8 lagging)?
Discuss
Answer: (b).– 168 W
Discuss
Answer: (d).Not affected by negative or zero sequence voltages
Q90.
The ratio of the reading of 2 watt-meters connected to measure power in a balanced 3-phase load is 2: 1 and the load is inductive. The power factor of load is?
Discuss
Answer: (a).0.866 lag