منظومات التجميد الفاينل MCQ

In a vapor compression refrigeration system the evaporator is in the

• System high pressure side.

• System low pressure side

• Between high and low side

• Both A and B

• Both B and C

In a vapor compression refrigeration system the refrigerant exits from evaporator at

• Low pressure liquid plus vapor

• Low pressure vapor

• Low pressure liquid

• High pressure liquid

• High pressure vapor

In refrigeration system the collecting of non-condensable gases inside the condenser will be

• Increasing the system capacity.

• reduce the condensing surface area

• Increasing the power required for compression process.

• Both A and B

• Both B and C

In the vapor compression refrigeration system the condensation is a process of

• Changing the refrigerant state from liquid to gas

• Changing the refrigerant state from gas to liquid

• Increasing the refrigerant gas pressure

• None of these

• All of these

The evaporator generally used in home freezers ice cream cabinets etc. is

• plate evaporator

• finned evaporator

• Double pipe evaporator

• shell and tube evaporator

• shell and coil evaporator

air cooled evaporator can be classified to three more categories, which one of the following is incorrect?

• Plate type

• Fined tube

• Shell-and-tubes type

• Both A and B

• Both B and C

In a vapor compression refrigeration system the component that absorbing heat is

• Evaporator

• Condenser

• Expansion device

• Compressor

• None of these

In a vapor compression refrigeration system the condenser receives refrigerant at

• Low pressure liquid plus vapor

• Low pressure vapor

• Low pressure liquid

• High pressure liquid

• High pressure vapor

The Wilson plot for shell and tube water cooled condenser is a graph of 1/U versus

• l/V 0.2

• l/V 0.4

• l/V 0.6

• l/V 0.8

• None of above

A thick layer of frost on the cooling coil acts as

• thermal conductor

• thermal insulation

• not affect

• heat rejected

• All of these