What color hose is used for connecting to the charging refrigerant cylinder vacuum pump or the recovery machine?
A) Red B) Blue C) Black D) Yellow
D
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List five physical hazards.
What will be an ideal response?
_____ exists when the terminal bud secretes chemicals that inhibit or prevent the growth of axillary buds on the same shoot
A) Cell dominance B) Root dominance C) Atypical dominance D) Apical dominance
What could happen if you charge liquid refrigerant into a chiller that is under a deep vacuum?
A) The vacuum will draw in an excessive amount of refrigerant, causing an overcharge. B) The compressor motor amp draw will cause the motor overload to trip. C) The refrigerant will flash at a low temperature, freeze the water, and crack the chiller tubes. D) The refrigerant will fractionate when it flashes off in the chiller.
An unwanted voltage or current fluctuations are defined as
A) noise B) eddy current C) hysteresis D) none of the above