Because air source heat pumps circulate less refrigerant at low ambient temperatures, the refrigerant not being used is stored
A) In a suction accumulator or charge compensator B) In a liquid receiver
C) In the compressor crankcase D) In the metering device
A
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?Technician A says that the lower radiator hose fails most often. Technician B says that 100% coolant provides better cooling than a mixture of coolant and water. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Technician A says that in a self-energizing brake, the rotation of the drum decreases the braking force of the lining against the drum. Technician B says that the force of the brake drum is added to the force supplied by the wheel cylinder. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Chilled water systems use a primary refrigerant to remove heat from a secondary refrigerant in a chiller unit. What is the secondary refrigerant in such systems?
A) Ammonia B) R22 C) R134A D) Water
Refer to the figure. Determine J if the drawing measures 1/2"
Fill in the blank(s) with the appropriate word(s).