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In a disk-type lubricating oil purifier, （）

题目
单选题
In a disk-type lubricating oil purifier, （）
A

the purifier driving gears are lubricated by the reclaimed

B

oil as it leaves the bowl all dirt and sludge are automatically discharged with the cooling water

C

sealing water must never be supplied until after oil is fed to the unit

D

deterioration of the bowl ring gasket will cause the purifier to lose its water seal

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相似问题和答案

第1题：

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


正确答案：C

第2题：

tell us briefly about the working principles of the purifier ,the oil water seperator and air compressor .


正确答案：Purifier :the different gravity of two types of liquids: water and oil .the centrifugal force of the water move towards the outside of the disc while the oil ,which is smaller in gravity shall move toward the center of the disc .this makes the seperation of the two liquids . Oil water separator : (1) pump bilge water into first chamber :polymerization of the oil on the gathering plates ,(2) and then through a fine filter (15ppm) separation of water and oil ,(3)discharge of the water overboard via 15ppm monitor and the oil into oil sludge tank .Air compressor :take into the air from the outside atmosphere and compress it with the up going piston .then ,cool the compressed air .then compress the air once again until it reaches the stated pressure (depending on the air bottle allowed pressure ) For the maintenance of the air compressor ,fistly ,must check to make sure that the suction valve and outlet valve to be sealed ;then make periodical lifting of the piston to make the pistons are in good condition .must check the crankcance lube oil everyday .

第3题：

In the following statements about the principle of the low level controlling, which is WRONG? 0

A.Low level is monitored on the drain tank and header tank.

B.If there is high differential the filters pressure across the circulating

pumps is alarmed

C.The lubricating oil purifier cannot take oil from the drain tank

D.If the sea water pressure falls, this also operates an alarm


答案：C

第4题：

单选题
The amount of lubricating oil in the drain tank should be checked by （）.
A

measuring

B

sounding rod

C

metering

D

weighting


正确答案： B
解析： 暂无解析

第5题：

单选题
One characteristic of a lubricating oil adversely affecting the result of centrifuging is （）
A

high TBN value

B

low oil floc point

C

low oil demulsibility

D

low oil neutralization number


正确答案： A
解析： 暂无解析

第6题：

_______can cause oil flow from water outlet of the oil purifier.

A.Oil inlet valve opening too quickly

B.Oil temperature little higher than normal

C.Diameter of gravity disc too small

D.Viscosity of oil little lower than normal


正确答案：A

第7题：

单选题
The primary purpose of oil control rings on a diesel piston is to（）
A

provide a reservoir for cylinder lubrication

B

pump oil into the combustion space for cylinder cooling

C

prevent excessive lubricating oil consumption

D

allow hydraulic oil film formation on the cylinder


正确答案： A
解析： 暂无解析

第8题：

Which of the following is NOT true about the centrifugal separator?

A.It can be applied to separate two liquids

B.It cannot separate solids which contaminated in the oil.

C.It consists of purifier and clarifier

D.The centrifuge arranged to separate two liquids is known as purifier


答案：B

第9题：

单选题
Excessive lubricating oil consumption in a running diesel engine can be caused by （）
A

clogged lube oil piping

B

excessive valve-guide clearance

C

high lube oil viscosity

D

low lube oil temperature


正确答案： A
解析： 暂无解析

第10题：

单选题
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
A

filter to remove the fuel oil

B

use the settler to remove the fuel oil

C

remove the fuel oil by centrifuging

D

drain and then renew the lube oil supply


正确答案： A
解析： 暂无解析

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