On a MODU main diesel engine, what is the primary purpose of fuel injection timing?
Motor Plants
Question · Hard
What a Safety Data Sheet tells you
Short
A MODU diesel will not roll on starting air even though bottle pressure is normal and the air-start distributor appears to work. The most likely cause is that the:
Crankcase explosion relief valves on a large diesel are designed to:
Question · Medium
What is the chief function of scavenging in a two-stroke-cycle diesel?
A marine diesel governor is best described as a device that:
Never enter a tank before testing the air
Black smoke from a diesel exhaust under steady load most commonly indicates:
White smoke continuing after a cold start on a turbocharged MODU diesel most likely indicates:
The primary purpose of a turbocharger on a MODU diesel is to:
If the charge-air (intercooler) cooler is fouled on the water side, the most likely operating effect is:
On suspected oil mist or a hot main bearing, the preferred first management action is to:
A crankcase oil mist detector is installed primarily to:
The jacket cooling-water system on a large diesel is primarily intended to:
If jacket-water temperature rises rapidly while load is steady, the chief engineer’s first checks should include:
Main engine lube oil is continuously purified on large diesels primarily to:
Low main-engine lube-oil pressure with normal oil level and running pump most likely indicates:
Cylinder oil feed rate on a large two-stroke is increased primarily when:
Starting-air bottles must be kept free of oil and water because:
A scavenge-space (scavenge fire) casualty is often indicated by:
Immediate actions for a confirmed scavenge fire typically include:
Mean effective pressure (MEP) from an indicator card is useful because it:
A diesel engine is rated 2,000 kW at 900 r/min. If it delivers 1,500 kW at the same speed, approximate load percentage is:
If indicated power is 1,200 kW and mechanical efficiency is 85%, approximate brake power is:
Viscosity of residual fuel for injection is controlled primarily by:
Water in fuel oil is dangerous mainly because it can:
A centrifugal fuel-oil purifier separates water and sludge primarily by:
If a fuel purifier continuously discharges excessive oil with the water, a likely cause is:
Auxiliary diesel generators on a MODU should be paralleled only when:
Electrical Electronics Control
After paralleling two diesel generators, real (kW) load is shared primarily by adjusting:
Reactive (kVAR) load sharing between paralleled AC generators is controlled mainly by:
A reverse-power trip on a generator breaker is intended to:
On a propulsion-assisted MODU, loss of a main engine while underway should first be handled by:
An auxiliary boiler on a MODU is used primarily to:
Before lighting off an auxiliary boiler, the furnace should be pre-purged because:
Low water in an auxiliary boiler is critical because:
A diesel engine’s emergency shutdown (overspeed trip) is designed to:
Runaway diesel (uncontrolled overspeed on oil mist/fuel in intake) requires:
Piston ring blow-by is indicated by:
A clogged fuel oil filter under load typically causes:
Question · Easy
When changing over from heavy fuel to distillate on a dual-fuel diesel system, the chief concern is:
The purpose of a diesel engine’s charge-air blow-off or wastegate (where fitted) is typically to:
A zoned fire-detection indicating panel serving the machinery spaces is valuable to the engineer mainly because it:
Engineering Safety Environmental
When the general alarm sounds on a MODU, the engineering watch's first obligation is to:
Before releasing a fixed CO2 total-flooding system into a machinery space, you must:
Aqueous film-forming foam (AFFF) is especially useful on:
The first action when discovering a machinery-space fire is typically to:
Enclosed-space entry on a MODU requires:
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