Century Enka ITI Electrician Interview Questions and Answers

AC motors are classified into different types based on their construction and operation, such as induction motors, synchronous motors, and brushed DC motors.

• Induction motors are the most commonly used type of AC motor and work on the principle of electromagnetic induction.

• Synchronous motors operate at a constant speed determined by the frequency of the AC power supply.

• Brushed DC motors use brushes and a commutator to s...read more

Transformer works on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

• Transformers have two coils - primary and secondary, which are magnetically coupled.

• When an alternating current flows through the primary coil, it creates a changing magnetic field.

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy.

• Transformers are ...read more

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers work on the principle of electromagnetic induction

• They consist of primary and secondary coils wound around a core

• Step-up transformers increase voltage while step-down transformers decrease voltage

• Efficiency of a transformer is determined by its core material and design