A.Excessive compression in the cylinder
B.A broken intake valve
C.A dirty inlet filter element
D.An improperly adjusted discharge valve
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A.Constant tension mooring winch system
B.Hatch cover system
C.Watertight door system
D.Internal combustion engine hydraulic starter system
A.Carbon build up in the piston ring belt
B.Faulty operation of a cylinder un-loader
C.Compressor operation in an area of high relative humidity
D.Lifting of intercooler rebel valve
A.system was overcharged with refrigerant
B.system was low on refrigerant
C.suction valves were leaking slightly
D.relief valve was leaking slightly
A.broken inlet valves
B.broken discharge valves
C.pulsations in the air distribution system
D.overloading of the air distribution system
A.warping head
B.fairlead
C.wildcat
D.capstan
A.system was overcharged with refrigerant
B.high pressure switch was improperly adjusted
C.expansion valve strainers were fouled
D.suction valves were leaking slightly
A.increased pump speed
B.excessive pump discharge pressure
C.too low of a tilting box angle
D.low pump speed
A.Lube oil passing through the system
B.Moisture or foreign matter collecting at the valve seat and orifice
C.Variable spring tension caused by the changing temperature
D.Frost on the liquid line
A.an immediate crankcase explosion
B.oil contamination in the compressed air
C.a decrease in compressor capacity
D.no immediate loss of the compressed air capacity
A.The density of the air entering the compressor
B.The temperature of the air entering the compressor
C.The designed rotating speed of the compressor
D.A leaking head gasket
最新试题
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by ().
An excessive charge of refrigerant in an air-cooled refrigeration system can cause ().
If the suction pressure at the refrigeration compressor is below normal, the cause can be().
Which of the following statements is correct concerning heat transfer?()
A salinity indicator is used to determine the ().
If the head pressure of a reciprocating refrigeration compressor is excessive, ().
When the steering gear is in operation, you should ().
One cause of high head pressure occurring in a refrigeration system can be ().
The usual symptoms of cavitation in a centrifugal pump is ().
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?()