Machinery Malfunctions. Test 5 – Online Maritime Tests

What could be the reason to knocking in the engine?

The engine is overloaded.
The injection is too late.
Faulty fuel injection pump.
The gudgeon pin, big end-, or main bearing clearances is too large.

The engine turns when starting air is supplied but does not start. What could be the probable cause to this?

Air in the fuel oil system.
The turbocharger is not running.
The lubricating oil temperature is too low.
The engine temperature is too low.

The engine turns when starting air is supplied but does not start. What could be the probable cause to this?

The injection pumps are working irregularly.
Low pressure in the charging air system.
Leaking valves in the cylinder heads.
Injection is too late.

During UMS rounds at night during a sea passage, and the duty engineer discovers the main engine lube oil pump starter 'chattering' loudly. Should he:

Switch over to the other pump and inform the CE of the noise immediately.
Inform the duty officer on the bridge of the noise.
Call the electrician and inform him of the noise.
Switch over to the other pump and leave the starter until the next morning.

The engine does not turn when starting air is supplied because of:

The engine temperature is too low.
Leakage in the indicator cocks.
Water in the starting air.
Released blocking function in remote starting system.

What could be the reason to knocking in the engine?

Faulty injection valves.
Clogged turbocharger filters.
Fuel injection advanced too far due to incorrect preinjection angle.
Any of the others

What could be the most probable cause to an abnormal lubricating oil pressure?

The oil relief valve on the cylinder block or the safety valve in the oil pump is sticking.
Clogging in waterside of the lubricating oil cooler.
Faulty pressure gauge.
Wrong type of lubricating oil.

We have a problem with vibration in the turbocharger. What might be the cause?

The turbine rotor is not balanced
The lubricating oil needs to be changed
Dirty air inlet filter
Worn out turbocharger bearings.

The engine turns when starting air is supplied but does not start. What could be the probable cause to this?

The inlet- and exhaust valve tappet clearance is off adjustment.
Clogged turbocharger filters.
The lubricating oil filters are clogged.
The fuel oil filters or pipes are clogged.

Review Answers