Exercise: Power Electronics

Questions for: Power Electronics

The commutation method in an inverter, is
A:
line commutation
B:
forced commutation
C:
either (a) or (b)
D:
none of the above
Answer: C
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Assertion (A): A fully controlled bridge converter can operate in first and fourth quadrant.

Reason (R): A semi converter is cheaper than a full converter.

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R correct but R is not correct explanation of A
C:
A is correct but R is wrong
D:
A is wrong but R is correct
Answer: B
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A cycloconverter uses
A:
natural commutation
B:
forced commutation
C:
either natural or forced commutation
D:
both natural and forced commutation together
Answer: C
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A class E chopper
A:
can operate in second quadrant only
B:
can operate in first or third quadrant
C:
can operate in all the four quadrants
D:
can operate in either second or third quadrant
Answer: C
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A fully controlled bridge converter can operate in quadrants
A:
1
B:
1 and 2
C:
1 and 3
D:
1 and 4
Answer: D
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