Introduction to Power Electronics

Power converters can change one form of power to another form of power using semiconductor power devices.

• True

• False

To allow power conversion, we can arrange all power switches in the converter freely.

• True

• False

How many directions can a semiconductor power switch conduct electric current?

• 1

• 2

• 3

• 4

In general, only ideal power switches generating power losses during their operation.

• True

• False

What is the name of power loss of a semiconductor device that occurs during the on-state?

• Blocking state power loss

• Forward conduction power loss

• Switching power loss

• None the above answers

The main function of power switches during off-state is to _____ forward and reverse voltage.

• allow

• block

• conduct

• stop

The main function of power switches during on-state is to _____ forward current.

• allow

• block

• conduct

• stop

All semiconductor power devices require a gate signal to initiate current conduction.

• True

• False

Which power switch needs a continuous control signal to remain turn-on?

• Diode

• Transistor

• Thyristor

We can measure the leakage current of a power switch when it is turned _____ and the voltage drop during turned _____.

• off, off

• off, on

• on, off

• on, on