Question

Distortion current includes all the other harmonics than the fundamental

true / false

The main advantage of a synchronous buck converter is that the voltage drop across the low-side MOSFET can be higher than the voltage drop across the power diode of the nonsynchronous converter

true / false

A converter operates in the rectifier mode of operation when power is converted from AC to DC

true / false

The average value of the DC voltage in the output of a three-phase full bridge diode rectifier is 566V when the input line-to-line voltage is 400V, 50Hz.

true / false

The RMS value of the neutral wire current is approximately six times the third harmonic RMS current in the line conductors of three-phase, four-wire systems with identical singlephase diode bridge rectifier systems in each phase of the load side

true / false

THD in a current is 33.3% when the fundamental component I1 is 100A and third harmonic I3 is 30A

true / false

The main disadvantage of a synchronous buck converter is that the voltage drop across the lowside MOSFET can be higher than the voltage drop across the power diode of the nonsynchronous converter.

true / false

Regeneration of power is not possible in power electronic converter systems.

true / false

The average value of the DC voltage in the output of a three-phase full bridge thyristor rectifier is 400V, when the control angle α = 40.22764° and the input line-to-line voltage is 400V, 50Hz.

true / false

In a typical AC motor drive the polarity of dc-bus voltage may vary according to operation point.

true / false

Answer 1

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