Vaibhav Tech Solutions Diploma Trainee Engineer Interview Questions, Process, and Tips

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

• Transformers are used to increase or decrease the voltage in electrical power transmission and distribution systems.

• They consist of two or more coils of wire, known as windings, that are wound around a core made of magnetic material.

• The primary winding receives electrical energy from a p...read more

MCB stands for Miniature Circuit Breaker. It is an electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

• MCB is a type of circuit breaker that automatically switches off the electrical circuit when it detects an overload or short circuit.

• It is commonly used in residential and commercial buildings to protect electrical appliances and wiring.

• MCBs are available in diff...read more

AC motor is an electric motor that operates on alternating current, while DC motor operates on direct current.

• AC motor converts electrical energy into mechanical energy using alternating current.

• DC motor converts electrical energy into mechanical energy using direct current.

• AC motors are commonly used in household appliances, industrial machinery, and electric vehicles.

• DC motors are often found in battery-powered devic...read more

Switchgear is a combination of electrical disconnect switches, fuses, or circuit breakers used to control, protect, and isolate electrical equipment.

• Switchgear is used to control and protect electrical equipment.

• It includes disconnect switches, fuses, and circuit breakers.

• Switchgear is designed to isolate faulty equipment from the power supply.

• It helps in preventing electrical accidents and damage to equipment.

• Examples...read more

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

• Ohm's law is expressed as V = IR, where V is the voltage, I is the current, and R is the resistance.

• It helps in understanding the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if the voltage is doubled while the...read more