Alkem Laboratories Hvac Supervisor Interview Questions and Answers

HVAC technicians work on all types of heating, ventilation, and air conditioning systems.

• HVAC technicians are responsible for installing, maintaining, and repairing heating, ventilation, and air conditioning systems in residential, commercial, and industrial buildings.

• They work on various types of HVAC equipment such as furnaces, air conditioners, heat pumps, and boilers.

• HVAC technicians must be knowledgeable about ele...read more

The HVAC cycle involves processes of heating, ventilation, and air conditioning to regulate indoor climate effectively.

• 1. Refrigeration Cycle: Involves evaporation, condensation, compression, and expansion of refrigerant.

• 2. Heat Transfer: Uses principles of thermodynamics to transfer heat from one area to another.

• 3. Ventilation: Ensures fresh air circulation and removes indoor pollutants.

• 4. Examples: Air conditioners c...read more

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

• Positive displacement compressors include reciprocating, rotary, and scroll compressors.

• Dynamic compressors include centrifugal and axial compressors.

• Each type of compressor has its own advantages and disadvantages based on the specific application.

• Reciprocating compressors are commonly used in household refrigerators, wh...read more

Differential temperature is the difference in temperature between two points or objects.

• Differential temperature is commonly used in HVAC systems to measure the temperature difference between the supply and return air.

• It can also refer to the temperature difference across a heat exchanger or between two different rooms in a building.

• Calculating the differential temperature helps in determining the efficiency of a syste...read more