ECE :: Power Electronics
-
In the below figure the rms voltage across each half of secondary is 200 V. The peak inverse voltage across each of thyristor is
-
Assertion (A): A GTO circuit is more compact than SCR circuit
Reason (R): A GTO can be turned off by negative gate pulse.
-
In a single phase full wave ac regulator, the firing angles in the two half cycles
-
In a single phase full bridge converter (B - 2 connection), the input voltage is v = Vm sin ωt. The output dc voltage for resistive load
-
As regards single phase dual converter
-
To protect an SCR against high di/dt we connect
-
In a parallel inverter
-
A dc chopper V = 500 V feeds an electric fraction dc series motor. The chopping frequency is 400 Hz. The series inductance required to limit the maximum current swing to 10 A is
-
A single phase fully controlled bridge rectifier is fed by a source having inductance. The output voltage during overlap period is
Whatsapp
Facebook
|
A.
the change in operation from one quadrant to the other is faster in non-circulating current mode
|
|
B.
the change in operation from one quadrant to the other is faster in circulating current mode
|
|
C.
the time response to change in operation from one quadrant to other is the same in both the modes
|
|
D.
the time response to change in operation from one quadrant to the other may be faster in any of the two modes
|
|
A.
the commutating capacitor C is across the primary of transformer and the load is across the secondary
|
|
B.
the commutating capacitor and load are connected across the secondary of transformer
|
|
C.
the commutating capacitor C and load are connected in series and the combination is across the secondary of transformer
|
|
D.
none of the above
|
.