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.Management Sciences
Category: Power Electronics
Under harmonic free load voltages, the 3 phase VSI_____________?
0
A. Does not contains second harmonic
B. Does not contains third harmonic
C. Does not contains fifth harmonic
D. Does not contains seventh harmonic
If energy is taken from the AC side of the inverter and sends it back into the DC side, then it is known as___________?
A. Motoring mode operation
B. Braking mode operation
C. Regenerative mode operation
D. None of these
The transfer function of PWM is generally developed in______________?
A. Time domain
B. Frequency domain
C. Either A. or B.
D. None of these
In the SPWM, the modulating signal is___________?
A. Square
B. Sinusoidal
C. Triangular
D. Saw – tooth
In a full bridge VSI, in order to avoid the short circuit across the DC bus and the undefined AC output voltage condition, the modulating technique should ensure that___________?
A. Top switch of each leg is on at any instant
B. Bottom switch of each leg is on at any instant
C. Either A. or B.
D. None of these
What is used to protect a thyristor from high di / dt conditions__________?
A. Fuse.
B. Snubber circuit
C. Inductor
D. Voltage clamping device
The opposite of susceptibility is___________?
A. Immunity
B. Emission
C. Interference
D. Electromagnetic compatibility
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