Power Electronics MCQ

Which of the below mentioned statements is false regarding a p-n junction diode?

When a physical contact between a p-region & n-region is established which of the following is most likely to take place?

Which of the following is true in case of a power diode with R load?

Which of the following devices does not belong to the transistor family?

Which of the following terminals does not belong to the MOSFET?

Which among the following devices is the most suited for high frequency applications?

An IGBT is also know as

At present, the state-of-the-art semiconductor devices are begin manufactured using

For a transistor, the safe operating area (SOA) is a plot of

Which terminal does not belong to the SCR?

The forward break over voltage is maximum when

The value of anode current required to maintain the conduction of an SCR even though the gate signal is removed is called as the

The two transistor model of the SCR can obtained by

The major function of the pulse transformer is to

In case of an RC half wave triggering circuit, the firing angle can be ideally varied between

In the thyristor gating circuit, the supply to the pulse amplifier is provided by the

The firing-angle delay is

If the gating circuits generator negative pulses, then those can be removed by using

The improved version of the UJT oscillator triggering circuit is the

The decaying factor in the wave shape of the output pulses from the pulse transformer is its

A three phase six pulse full converter works as a ac to dc converter for firing angles in the range

A three-phase full converter is driving a DC motor. If a continues current of Im amperes is flowing through the motor load, then find the rms value of supply current drawn by the converter to drive the motor.

For a step-up/step-down chopper, if the duty cycle > 0.5 then

High frequency gating uses a

A single-phase sinusoidal voltage controller has