Assistant Maintenance Engineer Interview Questions and Answers

Various measurements units are used in power systems for different parameters.

• Voltage is measured in volts (V)

• Current is measured in amperes (A)

• Power is measured in watts (W)

• Frequency is measured in hertz (Hz)

• Energy is measured in joules (J) or kilowatt-hours (kWh)

• Power factor is measured in a ratio or percentage

• Impedance is measured in ohms (Ω)

An induction motor is an AC electric motor in which the electric current in the rotor is produced by electromagnetic induction from the magnetic field of the stator winding.

• Induction motors are widely used in various applications such as pumps, fans, compressors, and conveyors.

• They are efficient, reliable, and require low maintenance.

• The working principle of an induction motor involves the interaction between the magnetic field of the stator and the rotor.

• The stator winding p...read more

A starter is an electrical device used to start and control the speed of an electric motor.

• It is used to control the flow of current to the motor

• It helps in reducing the starting current of the motor

• There are different types of starters such as direct-on-line starter, star-delta starter, and soft starter

Hydraulic walls can be classified into different types based on their construction and functionality.

• Hydraulic retaining walls

• Hydraulic flood walls

• Hydraulic seawalls

• Hydraulic canal walls