Computer Programming MCQs

5739 MCQs  (Page 101 of 574)

For similar carrier and modulating signals, the line current used in CSI is__________?
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
A capacitive load in voltage source inverters generates ________________?
A. Small current spikes and can be reduced by using an inductive filter
B. Large current spikes and can be increased by using an inductive filter
C. Small current spikes and can be increased by using an inductive filter
D. Large current spikes and can be reduced by using an inductive filter
The main objective of static power converters is to____________?
A. Obtain an dc output waveform from a dc power supply
B. Obtain an ac output waveform from a dc power supply
C. Obtain an dc output waveform from a dc power supply
D. Obtain an ac output waveform from a ac power suppl
During the commutation period in 3 phase converter, overlap time is_____________?
A. Dependent on the load current
B. Dependent on the voltage
C. Dependent on both the load current and load voltage behind the short circuit current
D. Independent on both the load current and load voltage
The control method used for PWM dc – dc converter is______________?
A. Voltage mode control
B. Current mode control
C. Hysteric control
D. All of these
Between the incoming and outgoing devices in voltage commutation
A. Large overlapping takes place
B. Small overlapping operation
C. No overlapping operation
D. None of these
The effects of EMI can be reduced by____________?
A. Suppressing emissions
B. Reducing the efficiency of the coupling path
C. Reducing the susceptibility of the receptor
D. All of these