更多"The ability of the governor to prev"的相关试题:
[单项选择]Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
A. Sensitivity
B. Power
C. Speed droop
D. Compensation
[单项选择]The most common contaminate of governor hydraulic fluid is （）.
A. moisture
B. dirt
C. acid
D. air
[单项选择]An overcorrecting and unstable engine governor operation is known as（）.
A. droop
B. dead banding
C. dash potting
D. hunting
[单项选择]A governor automatically controls engine speed by regulating （）.
A. fuel supply
B. firing order
C. engine load
D. oil level
[单项选择]The governor brake shall be capable of controlling the speed of lowering a fully equipped lifeboat with its complement of persons on board at（）.
A. safe speed only specified
B. not less than 120 feet per minute
C. not more than 120 feet per minute
D. not more than 90 feet per minute
[单项选择]The load limitation of governor should be reduced when ship navigating at sea, the main reason is to（）
A. prevent the diesel engine surging
B. prevent governor from being damaged because of swing
C. reduce the probability of the crank shaft being torsional vibrated and resonated
D. prevent the main engine being overload or overspeed
[单项选择]A spring-loaded centrifugal flyweight governor responds to reduced engine load with an immediate increase in （）
A. pilot valve oil pressure
B. speeder spring force
C. compensation needle valve clearance
D. centrifugal force on the flyweights
[单项选择]The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）
A. governor flyweight action on a pilot valve which controls fuel injection
B. governor flyweight motion acting on fuel controls through suitable linkage
C. positioning a butterfly valve in the fuel delivery system positioning
D. a servomotor piston attached to the fuel controls
[单项选择]On most diesel engines, the governor controls the output speed by （）.
A. controlling the amount of fuel injected into the cylinders
B. varying the speed of the turbocharger
C. adjusting the compression ratio
D. changing the timing of the fuel injection camshaft
[单项选择]In a simple mechanical governor, the （）
A. centrifugal force rotates the ball-head
B. flyweight centrifugal force is balanced by spring force
C. flyweight centrifugal force is balanced by hydraulic pressure
D. speeder spring alone actuates the fuel control rod
[单项选择]Defective governor in a diesel engine may lead to （）.
A. smoky exhaust
B. starting failure
C. ignition relay
D. over speed
[单项选择]If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the（）
A. rack position should be adjusted
B. compensating needle valve should be opened fully compensating
C. needle valve should be adjusted to stabilize operation
D. speed limiting device should be adjusted
[单项选择]Air bubbles in a hydraulic governor can cause （）
A. sluggish response
B. speed droop variations
C. isochronous governing
D. sensitivity increase
[单项选择]The governor of a generator engine is to （）.
A. make the engine stop
B. regulate the timing of camshafts
C. make the rpm stabilize at any required value
D. make the engine run at nearly constant speed
[单项选择]Anchors are prevent from running out when secured by the（）.
A. brake
B. devil's claw
C. pawls
D. All of the above
[单项选择]According to the regulations，to prevent excessive pressure buildup in cargo tanks containing LFG，they are fitted with（）.
A. pressure vacuum relief valves
B. excess flow valves
C. safety relief valves
D. flame screens
[单项选择]To prevent accidents from occurring, special valve chests are used in such cases in which interchangeable blanks and connecting passages are incorporatedThe bold and italic word “which” means （）.
A. accidents
B. special valve chests
C. interchangeable blanks
D. connecting passages
[单项选择]To prevent loss of stability from free communication flooding you should（）.
A. close the cross-connection valve between the off-center tanks
B. completely flood high center tanks
C. ballast double bottom wing tanks
D. close any opening to the sea in an off-center tank
