Which of the following best describes the purpose of a distributor?
A) To equally distribute refrigerant B) To equally distribute gas
C) To equally distribute superheated liquid D) To equally distribute cooling water
[Ques. 2] Which pair of factors most directly affects the maximum allowable pressure drop within a system?
A) Type of refrigerant and pipe size
B) Temperature of refrigerant and gas velocity
C) Type of refrigerant and gas velocity
D) Temperature of refrigerant and type of refrigerant
[Ques. 3] What are the most common desiccant materials used in driers?
A) Activated carbon and alcohol B) Activated alumina and activated charcoal
C) Alcohol and hydrogen peroxide D) Molecular sieve and activated alumina
[Ques. 4] Which of the following statements is TRUE about these systems?
A) The R410a system can operate at half the suction line pressure drop of the R-22 system.
B) The R-22 system can operate at the same suction line pressure drop of the R-410a system.
C) The R-22 system can operate at twice the suction line pressure drop of the R-410a system.
D) The R-410a system can operate at twice the suction line pressure drop of the R-134 system.
[Ques. 5] An R-22 refrigeration system requires a superheat of 8F. If the evaporator saturation pressure is 43 psig, what should the bulb temperature be?
A) 51F B) 8F C) 35F D) 28F
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