Diagnostic Engineer Interview Questions and Answers for Freshers

Relays are electrically operated switches that open and close circuits. IPM motors use power transistors to control the motor speed and direction with a DC battery supply.

• Relays work by using an electromagnet to mechanically switch contacts open or closed.

• IPM motors use power transistors to control the motor's speed and direction by adjusting the voltage and current supplied to the motor.

• DC battery supply provides the necessary power for the IPM motor to operate efficiently.

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MOSFET is a type of transistor that uses an electric field to control the flow of current.

• MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor.

• It has three terminals: gate, source, and drain.

• The gate terminal controls the flow of current between the source and drain.

• MOSFET operates in three regions: cutoff, triode, and saturation.

• It is commonly used in amplifiers, switches, and digital circuits.