网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
The total starting air capacity required for reversible main engines is to be sufficient for at least （）.
A
six consecutive starts
B
eight consecutive starts
C
ten consecutive starts
D
twelve consecutive starts
参考答案
参考解析
解析：
暂无解析
更多 “单选题The total starting air capacity required for reversible main engines is to be sufficient for at least （）.A six consecutive startsB eight consecutive startsC ten consecutive startsD twelve consecutive starts” 相关考题
考题
Vessels having main engines arranged for air starting are to be provided with at least__.A.one automatic drain serving both containersB.two air starting containers of approximately equal sizeC.one control air container and one starting air containerD.one additional means of starting the main engine
考题
In an operating diesel engine, which of the following conditions is an indication of a leaking air starting valve?A.Noise coming from that air starting valveB.Continuous operation of the starting air compressorC.Zero air pressure in the air starting systemD.Overheated starting air pipe to the cylinder head
考题
单选题Vessels having main engines arranged for air starting are to be provided with at least （）A
one automatic drain serving both containersB
two air starting containers of approximately equal sizeC
one control air container and one starting air containerD
one additional means of starting the main engine
考题
单选题The opening or closing of the cylinder starting valve is controlled by （）.A
the starting air distributorB
the cut-off valve on the air mainC
the main starting valveD
the air bottle control valve
考题
单选题When the order （） is received from the bridge, the main air stop valve in the starting air line should be shut.A
stand-by engineB
full aheadC
finished with engineD
full away
考题
单选题The main purpose of starting the diesel engine on air briefly is（）A
to inspect if the cylinder has the water leakageB
to expel out the residual water/gas/oil from the cylinderC
to check if fuel supply is normalD
A and B
考题
单选题Which of the following may cause that an engine doesnt turn on starting air?（）A
too low starting air pressureB
main starting valve closedC
neither A nor BD
A and B
考题
单选题The total starting air capacity required for reversible main engines is to be sufficient for at least （）.A
six consecutive startsB
eight consecutive startsC
ten consecutive startsD
twelve consecutive starts
考题
单选题Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）A
increase in starting air pressureB
increase in lube oil viscosityC
compression expansion deviceD
jacket water heater
考题
单选题Which of the following may lead to the engine NOT to start on air?（）A
starting air pressure too highB
correct timing of starting air valvesC
three of the six starting valves stuckD
the turning gear disengaged
考题
单选题Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（）A
Holding the valve open for a long periodB
Increasing the starting air pressure usedC
Opening the stating air valve quicklyD
Reducing the starting air valve size
考题
单选题A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）A
low lube oil temperatureB
low starting air temperatureC
air bubbles in the fuel oil systemD
water in the starting air system
考题
单选题The engine will fail to start unless （）.A
the pressure of the starting air is high enoughB
there is enough air in the air reservoirsC
the air is supplied into the cylinders in the appropriate sequenceD
all of the above
考题
单选题Which of the following may cause that an engine doesnt run on starting air?（）A
too low starting air pressureB
main start valve closedC
neither A nor BD
A and B
考题
单选题The pressure of pilot air is usually （） than that of starting air.A
higherB
lowerC
lowD
high
考题
单选题The primary task of the compressed air system is to deliver the starting air necessary for （）A
starting the MEB
starting the emergency electric alternatorC
driving the main turbineD
driving the turbocharger
考题
单选题Reduced voltage applied to a motor during the starting period will （）.A
result in decreased acceleration time onlyB
lower the starting current and increase accelerating timeC
cause a greater starting torqueD
increase the starting current and pump capacity
考题
单选题Starting air for auxiliary engines may be taken directly from the main reservoirs or through （）.A
an auxiliary reservoirB
a controlling air bottleC
an emergency air compressorD
a main air compressor
考题
单选题After finished the engine, which of valves cannot be shut off by the duty engineer?（）A
fuel valveB
the starting air valveC
the sea chestD
the main sea pump inlet valve
考题
单选题Pump up the starting air reservoirs to their maximum pressure and （）the air reservoirs and air system.A
openB
closeC
drainD
vent
考题
单选题When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）A
an obstruction in an cylinderB
water accumulation in some engine cylindersC
low starting air pressureD
low scavenge air pressure
考题
单选题When the starting air valve closes on one cylinder, another starting air valve has （） opened on another cylinder whose piston has just commenced its downward stroke.A
justB
nearlyC
merelyD
already
考题
单选题When the diesel is stopped, which of the following items is wrong?（）A
keep all systems in normally runningB
the main engine is stand-byC
shut off the starting air bottle outlet valveD
pay attention to the changes of the system parameters
考题
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）A
noise coming from that air starting valveB
continuous operation of the starting air compressorC
zero air pressure in the air starting systemD
overheated starting air pipe to the cylinder head
考题
单选题Fuel oil transfer systems used onboard diesel propelled vessels are required to have （）.A
two fuel oil transfer pumps provided where one is to be independent of the main engineB
two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engineC
engine driven transfer pumps and only used in constant speed applicationsD
the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
考题
单选题Which of the routine maintenance procedure listed is required for starting air receivers?（）A
Frequent draining of accumulated moistureB
Frequent testing of relief valvesC
A close watch on temperature to prevent fluctuations in pressureD
Frequent cleaning to re move oil and foreign matter
考题
单选题Which of the routine maintenance procedures listed is required for starting air receivers?（）A
over-speedingB
overloadC
low exhaust temperatureD
high crankcase pressure
考题
单选题Explosions do occur （） caused by the ignition of oil or vapour gaining access from compressors or defective engine starting valves.A
in boiler drumsB
in refrigerating plantsC
in starting air pipesD
in air coolers
热门标签
最新试卷