Power Electronics (3140915) MCQs

MCQs of AC Voltage Controller

Showing 11 to 14 out of 14 Questions
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11.
A single phase voltage controller has input of 230 V and a load of 15 Ω resistive. For 6 cycles on and 4 cycles off, determine the power delivered to the load.
(a) 2.1 W
(b) 2.1 kW
(c) 516 W
(d) 5.16 kW
Answer:

Option (b)

12.
Pulse gating is suitable for
(a) R loads only
(b) R and RL loads
(c) RL loads only
(d) all types of loads
Answer:

Option (a)

13.
In continues gating
(a) overlap angle is very high
(b) SCR is heated up
(c) size of the pulse transformer is small
(d) commutation cannot be achieved effectively
Answer:

Option (b)

14.
High frequency gating uses a
(a) train of pulses
(b) continuous gating block
(c) carrier signal
(d) none of the above
Answer:

Option (a)

Showing 11 to 14 out of 14 Questions
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