Auxiliary Machinery. Test 67

The main danger of feeding cold feedwater into a boiler is _____

When water is found mixed in the light liquid (oil) outlet of an oil purifier, the most likely reason is _____

water in the gear case.
that the relief valve of the oil supply attached pump has been set too high, causing overload.
excessive supply of sealing water, feed rate too high and water outlet of oil clogged.
defects in the horizontal shaft parts.

What would your first action be if the boiler feed pump stopped?

If the oil flows from the sludge outlet on an oil purifier, the most likely reason for this is _____

that the bowl has not been closed correctly, there is a fault in main seal ring, pilot valve or water supply for closing the bowl.
that the relief valve of the gear-type supply pump is working.
that air is being sucked into the suction piping of the lub oil pump.
that defects have developed in the vertical shaft parts or otherwise that the rubber plate has hardened.

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