Engineering, Control Systems. Test 17

If the main engine jacket cooling water expansion tank level drops rapidly, what could this indicate?

There is a leakage in external piping.
There is an internal leak in the engine.
Any of these.
There is a leak in the jacket cooling water cooler.

Experience and feedback shows that excessive oil losses in an engine installation are most frequently caused by _____ .

any of the other options.
losses in oil coolers.
malfunctioning of the valves during the cleaning of the filters of the lubricating oil system.
excessive oil in the cylinder being burned during combustion (defective piston/scraper rings).

What preparations are required regarding PISTONS and CYLINDER LINERS of a diesel engine prior to departure stand-by?

Open indicator cocks, close safety valve, turn lubricators.
Preheat cylinders and pistons, turn engine, turn cylinder lubricators.
Open starting air, start booster pump, start stern tube pump.
Close safety valve, put out turning gear, open air bottles.

If you are going to enter the engine's crankcase, how should you secure the engine after you have closed the main starting air valve?

Close all starting air valves and post a warning notice on the start air bottle.
Close absolutely all valves on the starting air bottle.
Engage the turning gear on the engine.
Keep a man posted in the control room to watch that nobody tries to start the engine.

What could be the consequence of inadequate valve tappet clearance?

High jacket water temperatures.
Accelerated valve gear wear.
Exhaust valve leaking causing possible damage to seat and valve.
High exhaust temperatures.

If the outlet temperature 'Tout' is kept constant at 65 degrees C and during normal sea speed the inlet temperature 'Tin'is 62 degree C, what would 'Tin' show during engine slow down ?

Inlet temperature 'Tin' will decrease.
Inlet temperature 'Tin' will fluctuate.
Inlet temperature 'Tin' will increase.
Inlet temperature 'Tin' will be kept constant by controller.

What is the simplest method of checking the fuel injection point on a 4 stroke Diesel engine?

Remove 'D' valve and use spill method.
Checking fuel pump plunger movement with dial gauge.
Checking fuel pump plunger movement with depth gauge.
Direct from the fuel pump cam position.

Review Answers

Engineering, Control Systems. Test 17

Engineering, Control Systems. Test 17

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