Exercise: Power Electronics

Questions for: Power Electronics

In a half bridge inverter each thyristor is gated at a frequency f. The output frequency is
A:
2 f
B:
f
C:
0.5 f
D:
0.25 f
Answer: B
No answer description is available. Let's discuss.
In load commutated chopper, the commutating element
A:
is capacitor
B:
is capacitor and inductor
C:
is capacitor, inductor and auxiliary thyristor
D:
any of the above depending on load
Answer: A
No answer description is available. Let's discuss.
A current source inverter has simple commutation circuit.
A:
True
B:
False
C:
D:
Answer: A
No answer description is available. Let's discuss.
In the basic series inverter circuit, the source supplies load
A:
only in positive half cycle
B:
both in positive and negative half cycles
C:
only in part of positive half cycle
D:
in positive half cycle and part of negative half cycle
Answer: A
No answer description is available. Let's discuss.
In the circuit of figure, the waveshape of load current when thyristor conducting is
A:
constant
B:
increasing exponentially
C:
decreasing exponentially
D:
either (b) or (c)
Answer: B
No answer description is available. Let's discuss.
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