A.Non automatic discharge overboard of machinery space bilge water
B.Automatic discharge overboard of machinery space bilge water
C.A and B
D.Neither A nor B
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A.open
B.close
C.remain in its position
D.flood the evaporator with refrigerant
A.low water level
B.low oil pressure
C.excessively high fuel pressure
D.an improper air/fuel ratio
A.Condenser leakage
B.A shortage of liquid refrigerant
C.Excessive frost on the evaporator
D.Not enough condenser cooling water
A.high discharge pressure
B.frosting of the crankcase
C.high temperature of the overboard water
D.low suction pressure of compressor
A.upper part of the receiver
B.upper part of the condenser
C.down stream end of the cooling coil
D.outlet end of the condenser
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Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?()
If the suction pressure at the refrigeration compressor is below normal, the cause can be().
The usual symptoms of cavitation in a centrifugal pump is ().
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of ().
A salinity indicator is used to determine the ().
One cause of high head pressure occurring in a refrigeration system can be ().
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
A pressure drop through the refrigerant liquid line may cause ().