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Electronics and Communication Engineering - Power Electronics

Exercise : Power Electronics - Section 7
46.
In a half bridge inverter, the freewheeling diodes are needed
even when load is resistive
only when load is inductive
only when load is inductive or capacitive
for all types of loads
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
When a thyristor is conducting, the voltage drop across it
is absolutely constant
decreases with increase in load current
increases slightly with increase in load current
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The advantage of modified series inverter with two inductors and two capacitors is
the intermittent operation of battery is avoided
efficiency of circuit is more
the output frequency is low
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
An SUS is
exactly similar to SCR but with higher rating
similar to UJT
PUT and avalanche diode connected in anti parallel
SCR and avalanche diode connected in parallel
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Which chopper circuit operates in quadrants 1 and 4?
A
B
D
E
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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