Samheung Electric Power Co. Electrical Technician Interview Questions and Answers

A machine is a combination of electrical components that work together to perform a specific function.

• Machines can range from simple devices like a toaster to complex systems like a computer.

• They typically consist of power sources, input/output components, control systems, and mechanical parts.

• Examples include washing machines, refrigerators, and electric motors.

A circuit breaker is an electrical switch that automatically interrupts the flow of current in a circuit.

• It is designed to protect electrical circuits from damage caused by excessive current or short circuits.

• When the current exceeds a certain limit, the circuit breaker trips and interrupts the flow of electricity.

• It can be manually reset after tripping or may automatically reset once the fault is cleared.

• Circuit break...read more

Step up and step down transformers are used to increase or decrease the voltage in electrical systems.

• Step up transformers increase the voltage from the input to the output.

• Step down transformers decrease the voltage from the input to the output.

• Step up transformers have more turns in the secondary coil than in the primary coil.

• Step down transformers have fewer turns in the secondary coil than in the primary coil.

• Step ...read more