Refrigeration & air conditioning

What is the purpose of a refrigeration system?

• To reduce noise pollution

• To remove heat and lower temperature

• To generate electricity

• To increase humidity levels

Explain the difference between air conditioning and refrigeration.

• Air conditioning and refrigeration have no difference in their purpose.

• Air conditioning focuses on comfort by removing heat and moisture, while refrigeration focuses on preservation by cooling to lower temperatures.

• Air conditioning and refrigeration both focus on heating instead of cooling.

• Air conditioning is used for preservation while refrigeration is for comfort.

What are the main components of a refrigeration system?

• motor, filter, duct

• compressor, condenser, expansion valve, evaporator

• pipes, wires, sensors

• fan, heater, thermostat

How does the refrigeration cycle work?

• The refrigeration cycle works by circulating a refrigerant through a closed loop system involving the evaporator, compressor, condenser, and expansion valve.

• The refrigeration cycle works by heating up the refrigerant to cool the space

• The refrigeration cycle works by releasing hot air into the environment

• The refrigeration cycle works by using solar power to cool the air

What is the role of a compressor in a refrigeration system?

• The compressor increases the pressure and temperature of the refrigerant gas.

• The compressor decreases the pressure and temperature of the refrigerant gas.

• The compressor is responsible for releasing the refrigerant gas into the atmosphere.

• The compressor has no impact on the refrigerant gas in the system.

What is the function of an evaporator in a refrigeration system?

• Generate cold air

• Condense refrigerant

• Increase pressure in the system

• Absorb heat and evaporate refrigerant

What are the common refrigerants used in refrigeration and air conditioning?

• R-123

• R-404A

• R-600a

• R-134a, R-410A, R-22

How does the expansion valve regulate the flow of refrigerant?

• By creating a pressure drop and controlled expansion of the refrigerant.

• By reducing the compressor speed

• By increasing the temperature of the refrigerant

• By releasing excess refrigerant into the atmosphere

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• Compressor ko supply dena

• Compressor ko protection dena

• Compressor start karna

• Compressor off karna

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