單項選擇題If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the()

A.oil has a tendency to emulsify in the bowl
B.purifier will act as a clarifier at the discharge ring
C.oil will be lost through the water discharge ports
D.oil solids will be deposited only at the intermediate top disk


您可能感興趣的試卷

你可能感興趣的試題

1.單項選擇題A centrifugal fuel oil purifier should be shut down if ()

A.more sealing water is needed
B.the cover clamp needs tightening
C.the purifier has a bad vibration when started
D.water is discharged from the overflow line

2.單項選擇題If fuel oil were being discharged from the waster outlet of a fuel oil disk type centrifuge, operated as separator, you should()

A.remove the discharge ring
B.re-prime the purifier
C.the centrifuge to its proper speed
D.install an additional discharge ring

3.單項選擇題One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against()

A.flattening of the bowl neoprene O-rings
B.operation within the explosive rang of the fuel
C.excessive purifier operating pressures
D.excessive oil viscosity

4.單項選擇題Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?()

A.Carbon particles
B.Lube oil
C.Gasoline
D.Diesel fuel

5.單項選擇題Which of the following problems will occur if a disk-type centrifugal lube oil purifier is not properly primed prior to admitting oil flow to the bowl?()

A.Contamination of the lube oil by emulsification will result
B.The lube oil will not be subjected to the proper centrifugal force
C.The lube oil will overheat and flash
D.Oil will discharge from the heavy phase discharge port and be wasted

最新試題

The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

題型:單項選擇題

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()

題型:單項選擇題

To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

題型:單項選擇題

When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

題型:單項選擇題

Which of the following items don’t belong to dock repair works?()

題型:單項選擇題

The condensers located in various stages of a flash evaporator are cooled by()

題型:單項選擇題

The shipboard oil pollution emergency plan will be invalid after ()

題型:單項選擇題

Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?()

題型:單項選擇題

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()

題型:單項選擇題

Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()

題型:單項選擇題