Electronics and Communication Engineering - Power Electronics

46. 

In rectifier circuits, the rms value of ac component of output voltage is equal to

A. Vrms
B. 0.5 Vrms
C. (Vrms - Vdc)0.5
D. (Vrms2 - Vdc2)0.5

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

47. 

A UJT exhibits negative resistance characteristics when

A. Current is less than valley current
B. Current is less than peak current
C. Current is more than peak current but less than valley current
D. None of the above

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

48. 

A dc chopper feeds an RLE load and has a duty cycle of 1. The load current will be such that

A.
B. Imax > Imin
C. Imin > 0
D. Imin < 0

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

49. 

In rectifier circuits, ripple factor RF and form factor FF are related as

A. RF = (FF2 - 1)0.5
B. RF = FF
C. RF = FF - 1
D. RF = (FF - 1)0.5

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

50. 

If we connect two silicon unilateral switches in anti- parallel we get

A. SCR
B. SBS
C. SCS
D. UJT

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

« Prev   1 2 3 4 5 6 7 8 9 10