The flywheel reduces speed fluctuations by （）

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• If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will （）

  A . decrease until the engine speed increases B . increase as the load increases C . decrease as the load D . increases remain unchanged

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• The ship should reduce speed in（）.

  A . the poor visibility B . the good night C . the fast speed D . the good sight

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• The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of（）.

  A . an isochronous governor B . elastic engine mounts C . a vibration damper D . a cast iron bed plate with good flexible qualitie

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• Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.

  A . increase B . decrease C . fluctuate D . remain constant

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• Your ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances（）.

  A . The generated CPA will be less than the actual CPA B . The generated TCPA will be later than the actual TCPA C . The range of initial target acquisition will be less than normal D . The targets true course vector will be in error

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• When a ship is entering to shallow water, ship resistance will be increased and the speed of main engine reduced.Due to the function of the governor, the main engine will（）

  A . reduce fuel feeding B . increase fuel feeding C . keep original fuel feeding D . be overspeed

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• The purpose of the flywheel of a diesel engine is to （）.

  A . counterbalance the crank throws on the crankshaft B . keep the engine running smoothly between power stroke C . provide a belt-driving surface for the operation of auxiliary machinery D . prevent the engine from overspeeding

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• On a diesel engine equipped with an isochronous governor, if the “speed droop” control is reduced to the “zero” setting, the engine （）

  A . speed will drop drastically with any increase in load B . will stop due to zero fuel supply C . will stall upon application of load D . speed will remain fairly constant despite load change

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• Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed （）.

  A . apparent slip B . tree slip C . pitch D . propulsive efficiency

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• （）will reduce the visibility.

  A . dust B . sea water C . land sand D . wind

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• I am proceeding（）reduced speed.

  A . at B . with C . on D . withi

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• To increase the distance to the vessel ahead by reducing one’s own speed means（）.

  A . fall back B . keep low speed C . running after D . drop back

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• A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to（）.

  A . moderate speed B . safe speed C . half speed D . bare steerageway

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• “Full speed ahead” and “Full speed astern” are（）given by the officers or the pilots.

  A . sailing orders B . speed orders C . wheel orders D . telegraph order

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• The purpose of the flywheel is to （）

  A . provide energy to operate the engine between power impulses B . neutralize the primary inertia force of the crankshaft C . reduce the shock of starting loads on the main bearings D . prevent the engine from operating at critical speed

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• If keep the fuel injection of main engine unchanged when ship is fouled, that will causeⅠ.The speed of main engine to be reduced Ⅱ.Ship speed to be reduced Ⅲ.The resistance torque of propeller to be increased Ⅳ.Trim at stern to increase（）

  A . Ⅰ + Ⅱ B . Ⅰ ~ Ⅲ C . Ⅰ ~ Ⅳ D . Ⅰ + Ⅱ + Ⅳ

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• A Doppler speed log indicates speed through the water（）.

  A . at all times B . in the bottom return mode C . in the volume reverberation mode D . only when there is no current

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• The majority of medium speed and high speed marine diesel engines for main or auxiliary drive operate on the （） cycle.

  A . two-stroke B . four-stoke C . long-stroke D . short-stroke

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• Critical speeds occurring within the operating speed range of a main propulsion diesel engine may be changed, or have their damaging effects reduced by a/an （）

  A . engine support vibration isolator B . detuner or viscous fluid damper C . lightened crankshaft flywheel D . spherically seated crankshaft bearing

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• What does “be reduced to rubble” mean in the sentence “The old town of Beichuan, home to 20,000 people, was reduced to rubble”?

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• In NC machines the cutting speed, rather than the spindle speed, is programmed.

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• Wht speed limit for driving will be observed in the evcution Highest possible speed.BWht speed limit for driving will be observed in the evcution Highest possible speed. B．Stndrd highwy speed. C．50 milesn hour. D．Trin speed.

  A．Highest possible speeD B．Standard highway speeD C．50 miles an hour． D．Train spee D．

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• Howell believed the captain's failure to reduce speed was an irresponsible action.

  A．TRUE B．FALSE C．NOT GIVEN

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• After some water reducing agent is used into concrete, the function of the agent is（）if some water is reduced

  A．to improve concrete mechanics B．to reduce concrete cost C．to change concrete workability D．to increase concrete flowability

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