A.moisture
B.dirt
C.acid
D.air
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A.relieve excess fuel oil pressure during the “off” fire cycle
B.admit water to the dry pipe
C.throttle the forced draft fan output for proper combustion
D.reduce excess steam pressure in the boiler
A.60 to75
B.80 to 95
C.100 to 115
D.120 to 135
A.heat conduction into the injected fuel oil
B.heat conduction into the water jacket wall
C.water circulation through passages in the holder
D.fuel oil circulation through passages in the holder
A.slightly acidic condition
B.slightly alkaline condition
C.overtreatment of water
D.neutral condition of water
A.Combustion gases flow through the tubes
B.Flames impinge on the tubes
C.Combustion occurs in the tubes
D.Water flows through the tubes
A.slight acidity
B.slight alkalinity
C.excessive alkalinity
D.excessive acidity
A.cold corrosion of the nozzles
B.fuel viscosity for better atomization
C.carbon accumulation on the nozzles
D.fuel detonation in the cylinders
A.the size of the holes in the fuel nozzle
B.timing of the pump
C.supply pressure to the pump
D.shape of the combustion chamber
A.fuel injectors
B.exhaust valves
C.intake valves
D.all of the above
A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the ()
(1) scavenging air is cooling the exhaust gases
(2) exhaust cycle time is longer
A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) nor (2)
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Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to ().
Lube oil cannot be efficiently filtered if its ().
Diesel engine control can be obtained by the bridge ().
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in ().
Combustion knock occurring in a diesel engine can be caused by ().
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as ().
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?()
The minimum speed an engine must attain before ignition can occur depends upon ().
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?()
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the ().