A. Forward voltage triggering
B. Gate triggering
C. dV / dt triggering
D. Thermal triggering
Which triggering is the most reliable____________? Read More »
Power Electronics A. forward blocking mode
B. reverse blocking mode
C. both forward and reverse blocking mode
D. forward conduction mode
Leakage current flows through the thyristor in_________? Read More »
Power Electronics A. Recovery is only 5 µs
B. Recovery is only 50 µs
C. Dog is carried out
D. None of these
Which of the following is disadvantage of fast recovery diodes? Read More »
Power Electronics A. CB
B. Snubber circuit
C. Voltage clamg device
D. Fast acting current limiting device (FACL fuse)
A. High di/dt
B. High dv/dt
C. Low di/dt
D. Low dv/dt
A power semiconductor may undergo damage due to____________? Read More »
Power Electronics A. of long period
B. of short duration
C. both (A) and (B)
D. neither (A) nor (B)
A. 20 A
B. 200 A
C. 600 A
D. 400 A
A. CB and fuse.
B. Heat sink.
C. Snubber circuit.
D. Voltage clamg device.
What is used to protect the SCR from over current ________________? Read More »
Power Electronics A. high value.
B. low value.
C. zero value.
D. moderate value.
Under normal operating condition voltage clamping device offers impedance of_________? Read More »
Power Electronics A. UJT
B. Diac
C. Triac
D. SCR
Which semiconductor device acts like a diode and two transistor? Read More »
Power Electronics