Starting air is shut off from the engine as soon as sufficient speed has been reached.（)

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• After the order “（）” is given, the air system is shut down, the turning gear put in.

  A . Finished with Engine B . Stop the Engine C . Stand-by Engine D . Slow-down Engine

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• 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 valve B . continuous operation of the starting air compressor C . zero air pressure in the air starting system D . overheated starting air pipe to the cylinder head

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• By far the greatest use is for diesel engine starting using air pressure of 25 bar or more provided by （）.

  A、rotary compressors B、reciprocating compressors C、centrifugal compressors D、screw compressors

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• A six-cylinder, two-stroke/cycle diesel engine is fitted with a rotary distributing air starting systemThe speed of the rotating distributor disc is （）

  A . one-half engine speed B . the same as engine speed C . twice engine speed D . four times engine speed

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• 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 period B . Increasing the starting air pressure used C . Opening the stating air valve quickly D . Reducing the starting air valve size

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• If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be（）

  A . on the power stroke B . on the exhaust stroke C . at the end of the power stroke D . at the start of the intake stroke

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• After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.

  A . steering B . timing C . turning D . running

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• When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its（）

  A . suction stroke B . compression stroke C . power stroke D . exhaust stroke

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• When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）

  A . an obstruction in an cylinder B . water accumulation in some engine cylinders C . low starting air pressure D . low scavenge air pressure

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• Each cylinder has one starting valve which is usually opened by air pressure and closed by （）

  A . nuts and bolts B . new joints C . spring force D . sealing ring

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• When the order （） is received from the bridge, the main air stop valve in the starting air line should be shut.

  A . stand-by engine B . full ahead C . finished with engine D . full away

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• When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）

  A . intake stroke B . compression stroke C . power stroke D . exhaust stroke

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• The pressure of pilot air is usually （） than that of starting air.

  A . higher B . lower C . low D . high

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• According to the regulations，what fire safety control feature is required in quick-closing shut off valves?（）

  A . Electrical cut off switch B . A fusible link C . Manual cut off switch D . A water spray actuator

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• In heavy marine engine the practice is to drive the engine on（）which has previously been stored in starting air reservoirs.

  A . electric motor B . hydraulic motor C . compressed air D . turning gear

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• Which of the routine maintenance procedure listed is required for starting air receivers?（）

  A . Frequent draining of accumulated moisture B . Frequent testing of relief valves C . A close watch on temperature to prevent fluctuations in pressure D . Frequent cleaning to re move oil and foreign matter

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• The starting air system usually has （） to prevent starting if anything is not in order.

  A . stop valves B . interlocks C . non-return valves D . air vent

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• The timing of diesel engine air starting valves is controlled by（）

  A . the air start valve timing gears and rods B . a cylinder check valve C . individual cams and valve gear D . an air manifold poppet valve

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• Once a scavenge fire is detected, fuel should be shut off from the affected cylinders and cylinder lubrication increased （） the risk of seizure.

  A . to protect B . to guard C . to maximize D . to minimize

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• 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 start

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• The main purpose of starting the diesel engine on air briefly is（）

  A . to inspect if the cylinder has the water leakage B . to expel out the residual water/gas/oil from the cylinder C . to check if fuel supply is normal D . A and B

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• A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must （）

  A . line up the engine fore restarting with light diesel oil B . reposition the fuel injection cam C . change the intake and exhaust valve cam positions D . place the starting cam in the intermediate positio

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• In heavy marine engine the practice is to drive the engine on____ which has previously been stored in starting air reservoirs.

  A.electric motor B.hydraulic motor C.compressed air D.turning gear

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