GCAP UPDATED SCRIPT 2026 PRACTICE
SOLUTIONS GRADED A+
● A low temperature Ammonia booster compressor normally operates
with a discharge temperature of 120F. The temperature of the discharge
vapor suddenly drops to 80F. What is indicated?. Answer: There is
possibly liquid in the suction line
● Where can oil be drained from an Ammonia system. Answer: All the
above
the high pressure receiver, the low pressure receiver, oil pots and some
evaporators
● for each pound of water evaporated, an evaporative condenser rejects.
Answer: 970 to 1057 BTU's
● A back pressure regulator is. Answer: a pressure controller
● The pressure/ temperature relationship for ammonia, obtained from a
PT chart, is only valid when the ammonia in the section you are
metering is. Answer: in a saturated condition
, ● An ammonia liquid line has liquid trapped and it's temp is starting to
rise. How much will the PSIG pressure rise for every one degree F of
heat exposure? (hydrostatic pressure increase). Answer: 100 to 150 psi
● How are temperature and heat related. Answer: temperature is a
measure of the intensity of the heat in an object
● what fluid friction or vapor resistance sometimes known as line loss or
pressure drop. Answer: the loss of pressure as the fluid/ vapor interacts
with inner walls of the pipe
● in a recirculation system where is it important to keep a constant pump
pressure. Answer: at the metering valve evaporator inlet
● A home air conditioner is rated to remove 24,000 BTU's in 1 hour.
What is its tonage. Answer: 2 ton
● what is the king valve. Answer: first liquid manual closing valve
leaving the HPR
● calculate the compression ratio from the following information:
suction pressure 33 PSIG Discharge Pressure 181 PSIG. Answer: 4.10:1
SOLUTIONS GRADED A+
● A low temperature Ammonia booster compressor normally operates
with a discharge temperature of 120F. The temperature of the discharge
vapor suddenly drops to 80F. What is indicated?. Answer: There is
possibly liquid in the suction line
● Where can oil be drained from an Ammonia system. Answer: All the
above
the high pressure receiver, the low pressure receiver, oil pots and some
evaporators
● for each pound of water evaporated, an evaporative condenser rejects.
Answer: 970 to 1057 BTU's
● A back pressure regulator is. Answer: a pressure controller
● The pressure/ temperature relationship for ammonia, obtained from a
PT chart, is only valid when the ammonia in the section you are
metering is. Answer: in a saturated condition
, ● An ammonia liquid line has liquid trapped and it's temp is starting to
rise. How much will the PSIG pressure rise for every one degree F of
heat exposure? (hydrostatic pressure increase). Answer: 100 to 150 psi
● How are temperature and heat related. Answer: temperature is a
measure of the intensity of the heat in an object
● what fluid friction or vapor resistance sometimes known as line loss or
pressure drop. Answer: the loss of pressure as the fluid/ vapor interacts
with inner walls of the pipe
● in a recirculation system where is it important to keep a constant pump
pressure. Answer: at the metering valve evaporator inlet
● A home air conditioner is rated to remove 24,000 BTU's in 1 hour.
What is its tonage. Answer: 2 ton
● what is the king valve. Answer: first liquid manual closing valve
leaving the HPR
● calculate the compression ratio from the following information:
suction pressure 33 PSIG Discharge Pressure 181 PSIG. Answer: 4.10:1
