Engineering, Control Systems. Test 5 – Online Maritime Tests

What kind of temperature control system is fitted in this lubrication oil system ?

Controlling the outlet by regulating the inlet
Controlling the inlet by regulating the outlet
Controlling the inlet by regulating the inlet
Controlling the outlet by regulating the outlet

Which of these could cause a problem with surging in the turbocharger ?

Lubrication oil pump is malfunctioning.
Dirty rotor blades and nozzle ring.
Worn bearings on the turbocharger.
Dirty scavenging air cooler on the air side.

What does the Jacket Cooling Water expansion tank level dropping rapidly indicate?

There is a leakage in the jacket cooling water system.
Sudden change of engine load.
Cracked cylinder liner.
Jacket water cooling pump failure.

You are experiencing blow-by on the main engine but, due to operational circumstances, it is impossible to stop and carry out a piston overhaul. What is the correct action to take ?

Reduce speed and closely monitor exhaust temperature on the affected unit.
Increase cylinder oil consumption.
Reduce speed temporarily and increase cylinder oil supply.
No action is necessary.

What is the main advantage of a CP propeller installation?

Engine can be run at constant, uni-directional speed.
More efficient propeller coefficient.
Higher engine rpm.
Less starting air consumption.

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