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Dear candidates you will find MCQ questions of Power Electronics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.47K Points
Coach

Q. 191) The single phase mid-point type cycloconverter uses __________ number of SCRs.

(A) 4
(B) 8
(C) 6
(D) none of the mentioned
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Mr. Dubey • 51.47K Points
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Q. 192) The single phase bridge type cycloconverter uses __________ number of SCRs.

(A) 4
(B) 8
(C) 6
(D) none of the mentioned
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Mr. Dubey • 51.47K Points
Coach

Q. 193) The principle of three phase cycloconverter is to

(A) add and remove number of SCRs
(B) vary progressively the firing angle of the devices
(C) keep the firing angle as 0° for all the devices
(D) none of the mentioned
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Mr. Dubey • 51.47K Points
Coach

Q. 194) In three phase cycloconverters, the reduction factor is given by

(A) input frequency/output frequency
(B) (input frequency/output frequency) -1
(C) (input frequency/output frequency) -1/2
(D) (input frequency/output frequency) 1/
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Mr. Dubey • 51.47K Points
Coach

Q. 195) In a three phase half-wave cycloconverter ___________

(A) both inverting and converting action takes place
(B) only inversion action takes place
(C) only converting action takes place
(D) none of the mentioned
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Mr. Dubey • 51.47K Points
Coach

Q. 196) In the ___________ type of chopper, two stage conversions takes place.

(A) AC-DC
(B) AC link
(C) DC link
(D) None of the mentioned
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Mr. Dubey • 51.47K Points
Coach

Q. 197) Choppers converter

(A) AC to DC
(B) DC to AC
(C) DC to DC
(D) AC to AC
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Mr. Dubey • 51.47K Points
Coach

Q. 198) A chopper may be thought as a

(A) Inverter with DC input
(B) DC equivalent of an AC transformer
(C) Diode rectifier
(D) DC equivalent of an induction motor
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Mr. Dubey • 51.47K Points
Coach

Q. 199) In a circulating-current type of dual converter, the nature of the voltage across the reactor is:

(A) Alternating
(B) Pulsating
(C) Direct
(D) Triangular
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Mr. Dubey • 51.47K Points
Coach

Q. 200) The frequency of the ripple in the output voltage of 3-phase semiconductor depends on:

(A) Firing angle and load resistance
(B) Firing angle and load inductance
(C) The load circuit parameters
(D) Firing angle and the supply frequency
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