A.stays
B.winches
C.barrels
D.brakes
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A.fire-tubes
B.furnaces
C.water drums
D.water wall tubes
A.The three moving vanes and the three fixed vanes form three pressure chambers
B.The three moving vanes and the three fixed vanes form six pressure chambers
C.The three moving vanes and the three fixed vanes form nine pressure chambers
D.The three moving vanes and the three fixed vanes form twelve pressure chambers
A.It is required that all ships are provided with two independent steering gear systems that is one main and one auxiliary
B.The auxiliary gear could be power operated in passenger ships
C.The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speed
D.All moving parts of the steering gear must be guarded against any possible damage
A.Only one pump should be used at any time
B.The ship speed should be reduced to 70% of the normal
C.Watch keeping of the steering gear should be increased
D.Limitations of the steering gear should be logged but the bridge need not be informed
A.Surrounding the fixed shaft is a hollow shaft
B.This hollow shaft carries radial bores
C.Each bore is fitted with a well-lapped plunger
D.There are always even numbers of bores
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A pressure drop through the refrigerant liquid line may cause ().
The major source of chemical contaminants in hydraulic fluid is ().
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump ().
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by ().
Low compressor head pressure in a refrigeration system can be caused by().
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by ().
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
A salinity indicator is used to determine the ().
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should ().