Mosanada FMS Assistant Engineer Mechanical Interview Questions, Process, and Tips

Safety of chiller includes proper installation, regular maintenance, and following safety protocols.

• Proper installation to prevent leaks and malfunctions

• Regular maintenance to ensure efficient and safe operation

• Following safety protocols such as wearing appropriate PPE and avoiding contact with hot surfaces

• Ensuring proper ventilation to prevent overheating

A VFD (Variable Frequency Drive) controls the speed of an AC motor by varying the frequency and voltage of the power supplied to the motor.

• VFD converts fixed frequency AC power to variable frequency AC power

• It adjusts the motor speed by changing the frequency of the electrical power supplied to the motor

• VFDs are commonly used in HVAC systems, pumps, conveyors, and other industrial applications

Superheating is the process of heating a substance above its boiling point without it changing into a gas.

• Superheating occurs in steam boilers when steam is heated beyond its saturation temperature.

• It increases the energy content of the steam and improves efficiency in power generation.

• Superheating is important in industrial processes where precise temperature control is required.

There are two main types of compressors: positive displacement compressors and dynamic compressors.

• Positive displacement compressors: Reciprocating, rotary screw, rotary vane

• Dynamic compressors: Centrifugal, axial flow