1
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
In a commutation circuit employed to turn off an $$SCR$$, Satisfactory turn-off is obtained when.
A
Circuit turn-off time
< device turn-off time
B
Circuit turn-off time
> device turn-off time
C
Circuit time constant
> device turn-off time
D
Circuit time constant
< device turn-off time
2
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
If a diode is connected in anti - parallel with a thyristor, then
A
Both turn off power loss and turn off time decreases
B
Turn-off power loss decreases but turn - off -time increases
C
Turn-off power loss increases, but turn off time decreases
D
None of the above
3
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
Which semiconductor power device out of the following is not a current triggered device?
A
Thyristor
B
$$G.T.O$$
C
Triac
D
$$MOSFET$$
4
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
The Triac can be used only in
A
Inverter
B
Rectifier
C
Multiquadrant chopper
D
Cycloconverter
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