NATEl Heatl Pumpsl Latestl 2026l 2027l

NATEl Heatl Pumpsl (Latestl 2026/l 2027l Update)l 100%l Verifiedl Questionsl &l Answersl |l Gradel A

Q:l Whyl isl superheatl necessaryl inl al systeml thatl utilizesl hermeticl compressors?a.l Itl ensuresl thatl dryl vaporl reachesl thel compressorl sol thatl mechanicall damagel doesl notl occur b.l Itl increasesl systeml capacity c.l Itl preventsl liquidl refrigerantl froml gassingl thel meteringl device d.l Superheatl isl necessaryl onlyl whenl openl compressorsl arel beingl used

Answer:

al (Itl ensuresl thatl dryl vaporl reachesl thel compressorl sol thatl mechanicall damagel doesl notl occur)

Q:l Whenl thel heatl loadl onl anl evaporatorl increases,l whatl isl thel effectl onl thel system?a.l Suctionl pressurel decreasesl andl dischargel pressurel increases b.l Suctionl pressurel increasesl andl dischargel pressurel decreases c.l Suctionl pressurel andl dischargel pressurel bothl decrease d.l Suctionl pressurel andl dischargel pressurel bothl increase

Answer:

dl (Suctionl pressurel andl dischargel pressurel bothl increase)

Q:l Whatl typel ofl energyl isl transferredl whenl workl isl donel inl thel condenser?a.l Latentl heatl energy b.l Sensiblel heatl energy c.l Bothl latentl andl sensiblel heatl energy d.l Neitherl latentl norl sensiblel heatl energy

Answer:

cl (Bothl latentl andl sensiblel heatl energy) 1 / 3

Q:l Whatl isl thel primaryl functionl performedl byl al thermall expansionl valve?a.l Itl maintainsl thel correctl superheatl inl thel hotl vaporl leavingl thel compressor b.l Itl maintainsl thel correctl superheatl inl thel suctionl vaporl leavingl thel evaporator c.l Itl maintainsl thel properl subcoolingl levell inl thel liquidl refrigerant d.l Itl preventsl flashl vaporl bubblesl froml developingl inl refrigerantl enteringl thel evaporator

Answer:

bl (Itl maintainsl thel correctl superheatl inl thel suctionl vaporl leavingl thel evaporator)

Q:l Whichl componentl pumpsl refrigerantl throughl thel systeml andl raisesl thel vaporl temperature?a.l Accumulator b.l Compressor c.l Condenser d.l Evaporator

Answer:

bl (Compressor)

Q:l Howl arel hermeticl compressorl motorsl cooled?

a.l Withl airl drawnl aroundl thel compressorl shelll byl thel condenserl fan b.l Withl waterl circulatedl throughl tubingl wrappedl aroundl thel compressorl shell c.l Withl suctionl vaporl drawnl froml thel evaporator d.l Withl al combinationl ofl airl andl water

Answer:

cl (Withl suctionl vaporl drawnl froml thel evaporator)

Q:l Heatl pumpl compressorsl sometimesl runl hotterl thanl compressorsl usedl inl cooling- onlyl unitsl becausel heatl pumpl compressorsl ____.a.l exhibitl lowl refrigerantl densityl atl lowl suctionl pressuresl duringl thel heatingl cycle 2 / 3

b.l pumpl liquidl refrigerantl duringl thel coolingl cycle c.l mustl preventl icel formationl duringl thel defrostl cycle d.l mustl heatl indoorl spacesl inl thel winter

Answer:

al (exhibitl lowl refrigerantl densityl atl lowl suction)

Q:l Whenl isl al crankcasel heaterl mostl needed?

a.l Earlyl inl thel morningl duringl thel coolingl cycle b.l Whenl thel compressorl isl operatingl inl veryl coldl winterl weather c.l Whenl thel compressorl isl operatingl inl veryl humidl conditions d.l Whenl thel compressorl isl off

Answer:

dl (Whenl thel compressorl isl off)

Q:l Workl donel onl thel refrigerantl inl thel condenserl isl transferredl asl ____.a.l latentl heat b.l sensiblel heat c.l specificl heat d.l bothl sensiblel andl latentl heat

Answer:

dl (bothl sensiblel andl latentl heat)

Q:l Whyl arel morel circuitsl neededl inl thel outdoorl coilsl usedl inl heatl pumpsl thanl inl thel condenserl coilsl usedl inl cooling-onlyl units?a.l Tol keepl thel pressurel dropl acrossl thel outdoorl coill high b.l Tol keepl thel pressurel dropl acrossl thel outdoorl coill low c.l Tol providel morel subcoolingl duringl thel coolingl cycle d.l Tol providel morel subcoolingl duringl thel heatingl cycle

Answer:

bl (Tol keepl thel pressurel dropl acrossl thel outdoorl coill low)

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