In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be________?
Azero
B0.3
Cunity
D0.5
Correct answer
D. 0.5
Explanation
The correct answer is 0.5.
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Study 109 Electrical Engineering MCQs with correct answers and explanations.
Correct answer
D. 0.5
Explanation
The correct answer is 0.5.
Correct answer
B. all of the above
Explanation
The correct answer is all of the above.
Correct answer
C. D.C. ammeter hour meter
Explanation
The correct answer is D.C. ammeter hour meter.
Correct answer
A. All of the above
Explanation
The correct answer is All of the above.
Correct answer
C. 10°
Explanation
The correct answer is 10°.
Correct answer
A. All of the above
Explanation
The correct answer is All of the above.
Correct answer
C. (n – 1) wattmeter elements
Explanation
The correct answer is (n – 1) wattmeter elements.
Correct answer
B. ohmmeters and resistance bridges
Explanation
The correct answer is ohmmeters and resistance bridges.
Correct answer
A. by eliminating the control springs
Explanation
The correct answer is by eliminating the control springs.
Correct answer
B. friction compensation
Explanation
The correct answer is friction compensation.