Test Engineer 1 Interview Questions and Answers for Freshers

A circuit for controlling DC motor using power electronic devices.

• Use a MOSFET or IGBT to switch the motor on and off

• Use a diode to protect the MOSFET or IGBT from reverse voltage

• Use a PWM signal to control the speed of the motor

• Use a flyback diode to protect the MOSFET or IGBT from voltage spikes

• Use a capacitor to smooth out the voltage to the motor

DAB stands for Digital Audio Broadcasting. It is a digital radio technology used for broadcasting radio stations.

• DAB uses digital signals to transmit audio instead of analog signals.

• It provides better sound quality and more stations can be broadcasted in the same frequency band.

• DAB also provides additional information like song title, artist name, and news headlines.

• DAB is used in many countries around the world, including the UK, Germany, and Australia.