NATE A/C Exam 1 Questions and Answers Already Passed

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NATE A/C Exam 1 Questions and Answers Already Passed Low airflow over a residential split system air conditioning evaporator can cause A: Liquid flood-back to the compressor B: A decrease in compr... ession ratio C: An increase in suction line superheat D: Oil logging in the evaporator ✔✔A: Liquid flood-back to the compressor Which of the following is the correct sequence of work? A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the system. B: Recover refrigerant, evacuate the system, replace filter core, recharge the system. C: Attach gauge manifold, evacuate the system, replace filter core, recover refrigerant, recharge the system. D: Attach gauge manifold, recharge the system, evacuate the system, replace filter core. ✔✔A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the system. As the pressure on a liquid is increased, the vaporization temperature of the liquid A: Decreases B: Increases C: Remains unchanged D: Varies ✔✔B: Increases An oil separator must be mounted A: Level B: Below the compressor crankcase C: Above the compressor crankcase D: In the suction line ✔✔A: Level Which of the following metering devices controls evaporator pressure? A: Thermostatic expansion valve B: Fixed orifice C: Low side float D: None of these ✔✔D: None of these An automatic expansion valve controls evaporator pressure. The purpose of the external equalizer on a thermostatic expansion valve is A: To equalize evaporator pressure drop with respect to the TEV B: To equalize the evaporator pressure drop C: To help prevent liquid floodback D: To allow the high side pressure to equalize to the low side when the compressor cycles off ✔✔A: To equalize evaporator pressure drop with respect to the TEV The higher the MERV rating of a filter-drier, the A: More efficient the drier at absorbing moisture B: Less efficient the drier at absorbing moisture C: Smaller the particles the filter can entrap D: MERV does not apply to filter-driers ✔✔D: MERV does not apply to filter-driers Minimum Efficiency Reporting Value - ME [Show More]

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