HVACR Unit 64 Exam Questions With
100% Verified Answers
A bi-flow thermostatic expansion valve: -
correct answer ✅Allows refrigerant flow in both directions.
Because air-source heat pumps circulate less refrigerant at low
ambient temperatures, the refrigerant not being used is stored: -
correct answer ✅In a suction accumulator or charge compensator.
Heat pump A has a SEER rating of 16 and an HSPF rating of 7. Heat
pump B has a SEER rating of 14 and an HSPF rating of 9. Which heat
pump heats more efficiently? -
correct answer ✅Heat pump B
Heat pump A has a SEER rating of 16 and an HSPF rating of 7. Heat
pump B has a SEER rating of 14 and an HSPF rating of 9. Which heat
pump cools more efficiently? -
correct answer ✅Heat pump A
How are heat pumps classified? -
correct answer ✅By their heat source and heat sink
How can a heat pump filter drier be differentiated from a standard
filter drier? -
, HVACR Unit 64 Exam Questions With
100% Verified Answers
correct answer ✅By the directional arrows pointing towards both
ends of the drier
How can an air-source heat pump heat when the outdoor
temperature is cold? -
correct answer ✅All molecules contain some heat until they reach
absolute zero (-460°F).
How can you lower the temperature at which evaporation takes
place? -
correct answer ✅Heat pump filter driers are bidirectional.
How does a liquid-line filter drier designed for heat pump use differ
from a standard liquid-line filter drier? -
correct answer ✅Heat pump filter driers are bidirectional.
How does the heating-cycle charge compensator aid the heating
cycle? -
correct answer ✅It stores the unneeded refrigerant.
How does the heating-cycle charge compensator differ during the
heating and cooling cycles? -
100% Verified Answers
A bi-flow thermostatic expansion valve: -
correct answer ✅Allows refrigerant flow in both directions.
Because air-source heat pumps circulate less refrigerant at low
ambient temperatures, the refrigerant not being used is stored: -
correct answer ✅In a suction accumulator or charge compensator.
Heat pump A has a SEER rating of 16 and an HSPF rating of 7. Heat
pump B has a SEER rating of 14 and an HSPF rating of 9. Which heat
pump heats more efficiently? -
correct answer ✅Heat pump B
Heat pump A has a SEER rating of 16 and an HSPF rating of 7. Heat
pump B has a SEER rating of 14 and an HSPF rating of 9. Which heat
pump cools more efficiently? -
correct answer ✅Heat pump A
How are heat pumps classified? -
correct answer ✅By their heat source and heat sink
How can a heat pump filter drier be differentiated from a standard
filter drier? -
, HVACR Unit 64 Exam Questions With
100% Verified Answers
correct answer ✅By the directional arrows pointing towards both
ends of the drier
How can an air-source heat pump heat when the outdoor
temperature is cold? -
correct answer ✅All molecules contain some heat until they reach
absolute zero (-460°F).
How can you lower the temperature at which evaporation takes
place? -
correct answer ✅Heat pump filter driers are bidirectional.
How does a liquid-line filter drier designed for heat pump use differ
from a standard liquid-line filter drier? -
correct answer ✅Heat pump filter driers are bidirectional.
How does the heating-cycle charge compensator aid the heating
cycle? -
correct answer ✅It stores the unneeded refrigerant.
How does the heating-cycle charge compensator differ during the
heating and cooling cycles? -
