RUNGTA Interview Questions and Answers

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to change the voltage level of an alternating current (AC) power supply.

• They consist of two coils of wire, known as the primary and secondary windings, wrapped around a magnetic core.

• When an AC voltage is applied to the primary winding, it creates a magnetic field th...read more

There are two main types of motors: AC motors and DC motors.

• AC motors are powered by alternating current and are commonly used in household appliances and industrial machinery.

• DC motors are powered by direct current and are commonly used in electric vehicles and robotics.

• Other types of motors include stepper motors, servo motors, and linear motors.

• Stepper motors are used in precision control applications, while servo m...read more

There are three types of motors in electrical systems: synchronous, asynchronous (induction), and special motors.

• Asynchronous motors include squirrel cage and slip ring induction motors.

• Special motors include universal, stepper, brushless DC, and servo VFD motors.

• Synchronous motors are used in applications where constant speed is required, while asynchronous motors are used in most industrial applications.

• Special motor...read more