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.Management Sciences
Category: Power Electronics
Regulator sampling PWM is usually used in___________?
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A. High power inverters
B. Rectifiers
C. Low power inverters
D. Only A. and B.
MOSFET stands for______________?
A. Metal – oxide semiconductor field effect transistor
B. Molybdenum – oxide semiconductor field effect transistor
C. Metal – oxide silicon field effect transistor
D. Metal – oxide semiconductor field effect transmitter
If the gate voltage of an SCR is removed, then the_______________?
A. anode current decreases
B. anode current does not decrease at all
C. anode current increases
D. cathode current increases
During which time maximum conduction spreading take place in the thyristor during turn ON?
A. Delay time
B. Spread time
C. Rise time
D. Same for every case
(more…)
A single phase full bridge inverter can operate in load commutation mode in case load consists of____________?
A. RL.
B. RLC underdamped.
C. RLC overdamped.
D. RLC critically damped.
An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be_____?
A. 1500 A.
B. 6000 A.
C. 2121.32 A.
D. 4242.64 A.
With gate open, the maximum anode current at which SCR is turned off from ON condition is called____________?
A. breakdown voltage
B. peak reverse voltage
C. holding current
D. latching current
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