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.Management Sciences
Category: Power Electronics
As the breakdown voltage reached, the DIAC exhibits?
A. Negative resistance characteristics
B. Goes into avalanche condition
C. Voltage drop snaps back
D. All of these
A Triac has three terminals viz ___________?
A. Drain, source, gate
B. Two main terminal and a gate terminal
C. Cathode, anode, gate
D. None of the above
A thyristor equivalent of a thyratron tube is a _________?
A. Diac
B. Triac
C. Silicon controlled-rectifier SCR
D. None of above
SITH is also known as___________?
A. Filled controlled diode
B. Filled controlled rectifier
C. Silicon controlled rectifier
D. None of these
In a silicon controlled rectifier, the load is connected___________?
A. Across anode
B. In series with anode
C. Across cathode
D. In series with cathode
An SCR is considered to be a semi controlled device because_______?
A. it can be turned OFF but not ON with a gate pulse.
B. it conducts only during one half cycle of an alternating current wave.
C. it can be turned ON but not OFF with a gate pulse.
D. it can be turned ON only during one half cycle of an AC.
A single phase full bridge inverter can operated in load commutation mode in case load consist of______?
A. RL.
B. RLC underdamped.
C. RLC overdamped.
D. RLC critically damped
The power demand can be estimated approximately by___________?
A. Load survey method
B. Mathematical method
C. Statistical method
D. Economic parameters
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