SSF PLASTICS Senior Electrical Technician Interview Questions and Answers

The motor is a device that converts electrical energy into mechanical energy to perform work.

• A motor consists of a rotor and a stator, with the rotor rotating inside the stator.

• Motors can be AC (alternating current) or DC (direct current) depending on the type of power source.

• Common types of motors include induction motors, synchronous motors, and brushed or brushless DC motors.

• Motors are used in various applications s...read more

Power system can be powered using various sources such as electricity from the grid, generators, solar panels, or batteries.

• Power system can be connected to the grid to receive electricity from a utility company.

• Generators can be used as a backup power source in case of outages or in remote locations.

• Solar panels can be installed to harness energy from the sun and power the system.

• Batteries can store excess energy for ...read more

Single phase ELCB is used for protection against electric shock in lighting circuits.

• ELCB stands for Earth Leakage Circuit Breaker.

• It detects and interrupts the circuit if there is a leakage of current to earth.

• Single phase ELCB is used in lighting circuits where the load is predominantly resistive.

• It is not suitable for circuits with electronic ballasts or motors.

• It provides protection against electric shock to humans...read more

The name of transformer used oil is transformer oil or insulating oil.

• Transformer oil is a highly refined mineral oil that is stable at high temperatures and has excellent electrical insulating properties.

• It is used to cool and insulate transformers, circuit breakers, and other electrical equipment.

• Transformer oil is also known as insulating oil or dielectric oil.

• It is important to regularly test and maintain transform...read more