Factor influencing the position of the interface between the liquid seal and the oil in a purifier is _____.

A:throughput B:back pressure C:gravity disc D:None of the above is wrong

Sediment collects in a tubular purifier _____.

A:on top cover B:on sides of bowl C:in drain line on the discs D:on the discs

High-speed rotation in a centrifugal purifier can produce a force _____ the force of gravity.

A:many thousand times larger than B:the same as C:many thousand times smaller D:none of the above

For a purifier, changing to a gravity disc with larger hole diameter will move the interface towards the _____.

A:bowl periphery B:bowl center C:upper surface D:lower surface

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 thecooling 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

The size of the discharge ring used for the efficient operation of a disk type purifier is dependent upon the ___.

A:rated capacity of that purifier B:viscosity of the oil being purified C:maximum design speed of that purifier D:specific gravity of the oil being purified

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

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

Before the sludge in a purifier is ejected, .

A:the oil feeding is stopped and replaced by admitting flushing water B:the flushing water feeding is stopped and replaced by admitting oil C:the feeding of dirty oil and flushing water is stopped D:the feeding of dirty oil and flushing water is admitted