A.under heavy loads
B.during hot gas defrost
C.under light loads
D.during starting conditions
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A.Excessive compression in the cylinder
B.A broken intake valve
C.A dirty inlet filter element
D.An improperly adjusted discharge valve
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
最新试题
Thermostatic expansion valves can be adjusted for ().
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump ().
The general purpose of a heat exchanger is to ().
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by ().
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be ().
A grease gun is generally used to lubricate a ().
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should ().
A salinity indicator is used to determine the ().
When the steering gear is in operation, you should ().
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?()