What is the maximum safe amount of refrigerant for a recovery cylinder with a water capacity of 50 lb, holding a refrigerant with a specific gravity of 0.9?
A) 50 lb × 0.8 = 40 lb B) 50 lb
C) 50 lb × 0.8 × 0.9 = 36 lb D) 50 lb × 0.9 = 45 lb
C
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A switch called the ____________________ switch is used to connect the excitation current to the motor.
Fill in the blank(s) with the appropriate word(s).
Technician A says that valve stem-to-guide clearance can be measured using a dial indicator. Technician B says that valve stem-to-guide clearance can be measured using a feeler gauge. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
Combustion is the chemical process that produces _____
A) heat? B) oxygen? C) fuel? D) power
A technician determined that all of the refrigerant had leaked out of the A/C system. Technician A says that the low-pressure switch will need to be replaced before the system can be recharged. Technician B says that the low pressure switch will need to be adjusted before the system can be recharged. Who is correct?
A. Technician A only B. Technician B only C. Both A and B D. Neither A nor B