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HVAC UNIT 20 EXAM STUDY GUIDE WITH ALL ANSWERS UPDATED. $12.49   Add to cart

Exam (elaborations)

HVAC UNIT 20 EXAM STUDY GUIDE WITH ALL ANSWERS UPDATED.

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  • EWRB
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  • EWRB

HVAC UNIT 20 EXAM STUDY GUIDE WITH ALL ANSWERS UPDATED.

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  • October 6, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • EWRB
  • EWRB
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HIGRADES
HVAC UNIT 20 EXAM STUDY GUIDE
WITH ALL ANSWERS UPDATED




What bis bthe bbest bmethod bto brepair ba bfractional bhorsepower bmotor bthat bhas ba
bbad bbearing? b- bcorrect banswer-Replace bthe bentire bmotor.


A btechnician bneeds bto bcheck ba bsingle-phase bcompressor. bHe blabels bthe bthree
bterminals b"A," b"B," band b"C" band btakes bresistance breadings bof bthe bwindings.
bHe breads b10 bohms bfrom b"A" bto b"B," binfinity bfrom b"B" bto b"C," band binfinity bfrom
b"C" bto b"A." bIdentify bthe bterminals. b- bcorrect banswer-Can bnot bidentify bterminals:
bopen bwinding


Technician b"A" bsays bthat ba bshorted bwinding bwill bresult bin bin ban bincreased
bcurrent bflow bthrough bthe bwinding. bTechnician b"B" bsays bthat bif ba bmotor bis bto
bbe breplaced, ba bmotor bwith ba blower bhorsepower brating bshould balways bbe bused.
bWhich bof bthe bstatements bis bcorrect? b- bcorrect banswer-Technician b"A" bis
bcorrect. bTechnician b"B" bis bincorrect


Technician b"A" bsays bthat bwhile bchecking bthe bwindings bof ba bcompressor, ba
breading bof b10 bohms bor bless bfrom bthe bcommon bterminal bto bground bindicates
bthat bthe bmotor bis bokay. bTechnician b"B" bsays bthat bthe bresistance bof bthe bstart
bwinding bshould balways bbe bless bthan bthe bresistance bof bthe bstart bwinding.
bWhich bof bthe bstatements bis bcorrect? b- bcorrect banswer-Technician b"A" bis
bincorrect. bTechnician b"B" bis bincorrect.

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