A. AC – DC
B. DC – DC
C. DC – AC
D. All of these
A. Zero
B. Switches between – 1 / 2 and + 1 / 2
C. Switches between – 1 and + 1
D. Switches between 0 and + 1
A. One
B. two
C. Three
D. Four
A. Directly proportional to their harmonic order
B. Inversely proportional to their harmonic order
C. Not related to their harmonic order
D. None of these
A. Only amplitude of voltage is controllable
B. Only phase is controllable
C. Both amplitude and phase is controllable
D. Amplitude, phase and frequency of voltages should always be controllable
In a three phase voltage source inverters____________? Read More »
Power Electronics A. Does not contains second harmonic
B. Does not contains third harmonic
C. Does not contains fifth harmonic
D. Does not contains seventh harmonic
Under harmonic free load voltages, the 3 phase VSI_____________? Read More »
Power Electronics A. Sine wave
B. Square wave
C. Triangular wave
D. Trapezoidal wave
Double edge modulation eliminates certain harmonics when the reference is a__________? Read More »
Power Electronics A. Identical to line voltage in a VSI
B. Identical to line current in VSI
C. Identical to phase voltage in VSI
D. Identical to phase voltage in CSI
For similar carrier and modulating signals, the line current used in CSI is__________? Read More »
Power Electronics A. Sawtooth carrier
B. Inverted sawtooth carrier
C. Triangle carrier
D. All of these
The carrier which are commonly used in constant – frequency PWM is______________? Read More »
Power Electronics A. 5
B. 7
C. 11
D. All of these
