4 thyristors rated 200 V in series. The operating voltage of the string is 600 V. Derating factor of the string is________?
A0.2
B0.75
C0.7
D0.25
Correct answer
D. 0.25
Explanation
The correct answer is 0.25.
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Study 217 Electrical Engineering MCQs with correct answers and explanations.
Correct answer
D. 0.25
Explanation
The correct answer is 0.25.
Correct answer
C. All of these
Explanation
The correct answer is All of these.
Correct answer
B. Either A. or B.
Explanation
The correct answer is Either A. or B..
Correct answer
D. All of these
Explanation
The correct answer is All of these.
Correct answer
C. of long period
Explanation
The correct answer is of long period.
Correct answer
C. Voltage controlled unipolar device
Explanation
The correct answer is Voltage controlled unipolar device.
Correct answer
D. CB and fuse.
Explanation
The correct answer is CB and fuse..
Correct answer
C. Harmonic distortion increases and quality of input current decreases
Explanation
The correct answer is Harmonic distortion increases and quality of input current decreases.
Correct answer
B. DC – DC converters
Explanation
The correct answer is DC – DC converters.
Correct answer
D. Two SCR’s connected in reverse parallel
Explanation
The correct answer is Two SCR’s connected in reverse parallel.