Auxiliary Machinery. Test 60 – Online Maritime Tests

When you start a purifier it takes several minutes to accelerate to full speed since the power from the electric motor is transferred by _____ to the purifier.

a plate clutch
a centrifugal clutch
a rotating coupling
a magnetic coupling

What will you do if the plate exchanger leaks when returned to service after cleaning?

Close the valves.
Reduce pressure.
Tighten more.
Dismantle the exchanger, check or renew packings.

Prior to starting the distillate pump, item No 7, it is necessary to make sure that _____ in order to avoid the pump running dry.

water is visible in the sight glass of the evaporator.
the vacuum in the evaporator is still minimum.
the discharge valve of the pump is shut.
the evaporator is full and under presuure.

Why is the presence of oil particularly dangerous in starting air lines?

It may cause sticking of the air start valves.
It could affect the operation of the relief valves.
It may carbon up and choke the lines.
The high oxygen content makes it very explosive.

When starting up a fresh water generator it often happens that the distillate pump fails to pump out the produced water. This could be caused by _____

an air leak on the shell and grease needs to be applied.
the vacuum being too high in the fresh water generator.
the pump is drawing in air through a leaking shaft seal.
the fresh water generator being too high.

If oil is found in the auxiliary boiler water, what action would you take other than isolating the leak ?

Skim and blow down the boiler.
Dose the coagulant.
Stop any chemical treatment.
Dose the coagulant, skim and blow down the boiler.

What type of pump is the distillate water pump, item No 7, and at what pressure is it discharging the liquid?

Vane pump, under vacuum.
Centrifugal pump under pressure.
Centrifugal pump, under vacuum.
Vane pump, under pressure.

When taking over the watch as duty engineer, what would you check first, before inspecting the plant condition?

The log book entries from the previous watch.
The engine room bilges.
The fire alarm monitoring equipment.
The Chief Engineer's standing orders and special instructions.

When an overhaul of a compressor is completed and the compressor is to be started for a test run, it is important to _____

check that an open discharge line exists through to the receiver.
check that all air receiver outlets are closed during the test run.
check the direction of rotation.
check the maximum pressure of the capacity on run-up.

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