Electrician Instructor Interview Questions and Answers

Types of 3 phase induction motors include squirrel cage induction motor, wound rotor induction motor, and double squirrel cage induction motor.

• Squirrel cage induction motor: Simple and rugged design, low cost, used in most industrial applications

• Wound rotor induction motor: External resistance can be added to control speed, used in applications requiring high starting torque

• Double squirrel cage induction motor: Higher efficiency and better starting torque compared to single s...read more

A fire extinguisher is a portable device used to extinguish small fires by releasing chemicals or water.

• Used to put out small fires

• Contains chemicals or water

• Portable and easy to use

• Different types for different types of fires (e.g. Class A, B, C)

• Should be easily accessible in case of emergency