Category: Power Electronics

A. Voltage across the commutating inductances collapses
B. The capacitance voltage adds to the supply voltage
C. Both A. and B.
D. None of these

A. Is equal to the source resistance
B. Greater than the source resistance
C. Smaller than the source resistance
D. None of these

A. V 0 = V s
B. V 0 = D V s
C. V 0 = V s / D
D. V 0 = V s / ( 1 – D )

A. < latching current but greater than holding current and gate signal is 0.
B. less than holding current.
C. < latching current but greater than holding current and gate signal is present.
D. both (A) and (B).

A. fast acting fuse
B. snubber circuit
C. metal oxide varistor
D. aluminium block

A. Uninterruptible power supplies
B. Induction heating system
C. Constant voltage and frequency power supplies
D. All of these

A. holes only
B. electrons only
C. either electron or holes
D. Both electron and holes

A. as static conductor
B. for power control
C. for speed control of dc shunt motor
D. All of these

A. Always positive w.r.t cathode
B. Always negative w.r.t anode
C. Always positive w.r.t anode
D. Always negative w.r.t cathode

A. 61%
B. 71%
C. 81%
D. 91%