更多"On a diesel engine equipped with a "的相关试题:
[单项选择]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 changes
[单项选择]A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to （）
A. decrease only
B. increase only
C. decrease slightly then returned to original speed
D. increase slightly then returned to original speed
[单项选择]The rotating range of the low speed diesel engine is usually lower than （）.
A. 100 rpm
B. 200 rpm
C. 300 rpm
D. 500 rpm
[单项选择]The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of （） rpm.
A. below 300
B. above 1200
C. between 300 to 1200
D. below 1200
[单项选择]A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）
A. engine overload
B. leaky valves
C. stuck or broken piston rings
D. low air injection pressure
[单项选择]A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）
A. low lube oil temperature
B. low starting air temperature
C. air bubbles in the fuel oil system
D. water in the starting air system
[单项选择]On a large low-speed main propulsion diesel engine, lower main bearing wear is usually measured by using a/an （）
A. dial indicator
B. outside caliper
C. bridge gauge
D. tram rod
[单项选择]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
[单项选择]In a large, low-speed diesel engine the clearance between the piston crown and cylinder head is found to be excessiveIn order to correct for this, you should（）
A. build up the piston crown by metal spraying
B. build up the cylinder head by metal spraying
C. insert shims between the crankpin bearing box and the connecting rod foot
D. install a thinner head gasket
[单项选择]
In a medium speed diesel engine, a trunk type piston may be cooled by（）
Ⅰ.oil circulation though passages in the piston crown
Ⅱ.heat transfer through piston rings and liner wall
A. Ⅰ only
B. Ⅱ only
C. either Ⅰ or Ⅱ
D. neither Ⅰ or Ⅱ
[单项选择]On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.
A. a spindle lubricator
B. an oil jet
C. internal splashing
D. drilled passages in the crankshaft
[单项选择]An over-speed trip stops a diesel engine when the engine （）
A. runs out of fuel
B. has low lubricating oil pressure
C. exceeds a set maximum speed
D. has high cooling water temperature
[单项选择]In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the（）
A. top of the ring groove
B. back of the ring groove
C. bottom of the ring groove
D. piston ring end clearance
[单项选择]A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.
A. cylinder heads
B. exhaust valves
C. scavenging air
D. injectors
[单项选择]As to the low speed diesel engine, if you want to change the coolant flow for a certain cylinder, you can regulate （）.
A. the inlet valve
B. the outlet valve
C. both the inlet valve and the outlet valve
D. the pump inlet valve
[单项选择]On a turbo-charged, medium-speed diesel engine, which of the following problems is an indication of a restricted air intake passage?（）
A. Engine is hard to start
B. Engine misses
C. Surges at governed RPM
D. Coolant temperature is too low
[单项选择]The hydraulic （） is used to control engine speed.
A. motor
B. pump
C. governor
D. capstan
[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
