更多"An overcorrecting and unstable engi"的相关试题:
[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]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]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]A centrifugal pump vibrates excessively during operationUpon disassembling the pump it is found that the impeller is out of balanceWithout an available spare, you should （）.
A. drill holes through the heavy side of the impeller until it balances
B. weld counterweights to the light side of the impeller
C. remove metal from the heavy side by machining in a lathe
D. acid wash and serape the heavy side until it balances
[单项选择]Which conditions will normally cause a SART to operate in the active mode?（）
A. It will respond only to interrogation by 9-Ghz radar signals
B. A SART will normally respond to interrogation from a searching vessel's radar if the radar antenna is at least 15 meters high
C. A SART will normally respond to interrogation from a searching aircraft's radar if the radar's output power is at least 10，000 watts and the aircraft is at a height of 3000 feet and within 30 nautical miles
D. All of the above
[单项选择]The crankcase cover should never be allowed to open for investigation when （）
A. the engine stops
B. the engine is running
C. you repair the engine
D. overhauling the engine
[单项选择]Which of the terms listed below represents the operational speed at which excessive engine vibration is created?（）
A. Non-harmonic speed
B. Critical speed
C. Maximum speed
D. Design maximum speed
[单项选择]（）indicates unstable weather.
A. The persence of cirrus clouds
B. The low-hanging stratus clouds
C. The altocumulus clouds
D. The massive cumulus clouds
[单项选择]When ship navigating in rough sea, the correct operation is （）
A. navigating with a low diesel engine speed
B. navigating with a stable diesel engine speed
C. increasing the efficiency of propeller
D. increasing fuel injection
[单项选择]The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.
A. crankshaft
B. camshaft
C. piston rod
D. rack and pinion
[单项选择]An orange and white buoy marking an area where operating restrictions are in effect will be marked with which symbol? （）
A. Open-faced diamond
B. Diamond with a cross
C. Circle
D. Rectangle
[单项选择]The term （） refers to one complete sequence of operations required to produce power in an engine.
A. diesel engine
B. stroke
C. cycle
D. compression ratio
[单项选择]Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
A. low oil pressure
B. high coolant pressure
C. leaking fuel injector
D. cracked cylinder head or liner
[单项选择]An unstable upright equilibrium position on a vessel means that the metacenter is（）.
A. lower than the center of gravity
B. at the same height as the center of gravity
C. higher than the baseline
D. on the longitudinal centerline
[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
[简答题]请简述OPE收费业务管理应用程序中包含的功能？
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
