A good engine should produce how much compression during a running (dynamic) compression test?
A) 60-90 PSI B) 100-150 PSI C) 150-200 PSI D) 30-60 PSI
A
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
Technician A says that if a check ball is magnetized, it may not work as designed. Technician B says that a solenoid is magnetic and can attract metal particles that can affect its operation. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
The air leaving an evaporator has a dry-bulb temperature of 85°F and a wet-bulb temperature of 65°F. The air entering the evaporator has a dry-bulb temperature of 95°F and a wet-bulb temperature of 75°F. How many grains of moisture per pound of dry air were removed by the evaporator?
What will be an ideal response?
What type of systems normally use crankcase pressure regulators?
A) Commercial refrigeration applications with evaporator temperatures above 40°F B) Any refrigeration system with a compressor that has a positive-pressure oil pump C) Primarily comfort cooling applications D) Low-temperature refrigeration applications such as walk-in and reach-in freezers