Refrigerant oil flow through the liquid line is not a problem because:

Refrigerant oil flow through the liquid line is not a problem because:

A) The oil and refrigerant do not mix, so the refrigerant does not interfere with oil flow.
B) The oil mixes with the liquid refrigerant.
C) The liquid line is always piped downhill.
D) There is no oil present in the liquid line.

[Ques. 2] An isothermal process is a process that does not change:

A) The state of the refrigerant. B) The temperature of the refrigerant.
C) The volume of the refrigerant. D) The pressure of the refrigerant.

[Ques. 3] For most systems, the minimum velocity in a horizontal suction line is:

A) 3,0003,500 ft per minute. B) 7501,000 ft per minute.
C) 1,0001,500 ft per minute. D) 500750 ft per minute.

[Ques. 4] A TEV with a dead power element will operate:

A) With a low superheat.
B) Correctly until an adjustment is made to the valve.
C) With a high superheat.
D) With a higher-than-normal evaporator pressure.

[Ques. 5] Adiabatic expansion means:

A) Expanding without adding heat.
B) Expanding by applying a strong magnetic field to a polarized substance.
C) Expanding by adding heat.
D) Expanding through the use of centrifugal force.

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Refrigerant oil flow through the liquid line is not a problem because:

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