單項(xiàng)選擇題One method of determining crankshaft misalignment is by()

A.laying a straight edge across the crank webs at the crankpin and measuring the distance to the crankpin in two places
B.measuring the crank drop on either side of each crank throw while the crankshaft is slowly rotated through one revolution
C.rotating the crankshaft through one revolution, pausing each 90oof rotation to measure bearing clearances, top and bottom
D.taking micrometer reading between the crank cheeks opposite the crankpin every 90°of crank angle rotation


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the ()

A.electronic ignition system
B.compression of air by the piston
C.friction in the fuel injector
D.fuel oil bearing system

2.單項(xiàng)選擇題Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be()

A.placed as near the crankpin axis as possible
B.removed each time the crankshaft is repositioned
C.left in place for all four readings
D.reset to zero for all four readings

3.單項(xiàng)選擇題Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will()

A.increase engine power
B.increase engine load
C.decrease engine power
D.improve fuel economy

4.單項(xiàng)選擇題Diesel engine injection lag is caused by()

A.compressibility of the fuel
B.high fuel oil supply flow
C.scored plunger and barrel packing
D.excessive air turbulence

5.單項(xiàng)選擇題Abnormal crankpin bearing and piston skirt surface wear indicate()

A.a restricted air intake
B.a clogged connecting rod oil passage
C.incorrect connecting rod alignment
D.high cylinder firing temperatures

最新試題

Which one is NOT the ‘clear grounds’ for a more detailed inspection?()

題型:單項(xiàng)選擇題

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to ()

題型:單項(xiàng)選擇題

The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

題型:單項(xiàng)選擇題

By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()

題型:單項(xiàng)選擇題

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

題型:單項(xiàng)選擇題

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

題型:單項(xiàng)選擇題

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

題型:單項(xiàng)選擇題

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()

題型:單項(xiàng)選擇題

To proceed to the assistance of a ship in distress is()

題型:單項(xiàng)選擇題

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()

題型:單項(xiàng)選擇題