A fixed-restriction system operating with a refrigerant undercharge will have:
A) A low system superheat. B) A high system superheat.
C) A high subcooling. D) Higher temperature drop across the evaporator.
[Ques. 2] AC generators work by:
A) Rubbing two statically charged materials together.
B) A chemical reaction.
C) Turning a coil of wire through a magnetic field.
D) By spinning a loop of wire at high rates of speed until the electrons start to move.
[Ques. 3] One problem resulting from operating an air conditioner using undersized power wiring is:
A) The wire will get hot. B) The amp draw will be too low.
C) The wire will jump when the unit starts. D) The voltage at the unit will be too high.
[Ques. 4] A fixed-restriction system operating with a refrigerant overcharge will have:
A) A high system superheat. B) A low system superheat.
C) A low subcooling. D) Higher temperature drop across the evaporator.
[Ques. 5] What unit specification should be used to size the overcurrent protection?
A) The minimum circuit ampacity (MCA) B) The maximum overcurrent protection (MOCP)
C) The locked rotor amps (LRA) D) The rated load amps (RLA)
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