更多"Before hydraulic starting of an eng"的相关试题:
[单项选择]Before starting an engine by air, the engine must（）
A. be turned by a turning gear for at least one minute
B. be turned by a turning gear for at least two minutes
C. be turned at least one complete turn
D. be turned at least two complete turns
[单项选择]Before starting the engine the air bottle should be （）.
A. pumped up
B. loaded
C. discharged
D. opened
[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
[单项选择]When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its（）
A. suction stroke
B. compression stroke
C. power stroke
D. exhaust stroke
[单项选择]Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
A. the gasoline tank is full
B. the bilges，cabins，etc. are thoroughly ventilated
C. you have fresh water on board
D. Each of the above is followed
[单项选择]Before starting a diesel engine, you should always（）
A. check the pyrometer readings
B. check the crankcase oil level
C. check the fuel oil strainers
D. clean the fuel system
[单项选择]Before starting any diesel or gasoline engine，which of the following must be checked? （）
A. Oil level
B. Flow of cooling water
C. Exhaust discharge
D. All of the above
[单项选择]Immediately after starting a diesel engine, normal raw water and jacket water pressure are indicatedHowever, the jacket water temperature continues to rise, if there is no change in the sea temperature, you should suspect（）
A. overloading in all cylinders
B. a jammed three-way thermostatic valve
C. chromate PH too low
D. a high level in the surge tank
[单项选择]The main purpose of starting the diesel engine on air briefly is（）
A. to inspect if the cylinder has the water leakage
B. to expel out the residual water/gas/oil from the cylinder
C. to check if fuel supply is normal
D. A and B
[单项选择]About half an hour before the engine is required, cooling water at （） must be circulated.
A. more than the working temperature
B. less than the working temperature
C. the working temperature
D. the same as the surrounding temperature
[单项选择]Cold weather starting of a diesel engine is more difficult than warm weather starting due to（）
A. use of low viscosity oil in cold weather
B. increased moisture content of inlet air in cold weather
C. increased drag of pistons and bearings due to increased oil viscosity
D. higher compression pressures reached due to smaller clearances existing in the engine during cold weather
[单项选择]Cold weather starting of a diesel engine may be made easier by（）
A. decreasing the compression ratio
B. using a special fuel having a high ignition temperature
C. increasing the starting air supply
D. heating the jacket water
[单项选择]On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）
A. accumulator spring compressor
B. balance piston
C. compensating needle valve
D. proportional piston
[单项选择]The starting of a marine diesel engine is generally carried out with the assistance of （）.
A. compressed air
B. electricity
C. hydraulic oil
D. compressing air
[单项选择]A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?（）
A. Hydraulic starting
B. Electric starting
C. Ignition
D. Fuel
[单项选择]The hydraulic （） is used to control engine speed.
A. motor
B. pump
C. governor
D. capstan
[单项选择]Diesel engine electric starting motors generally require heavier duty motors and motors and operate at higher voltages than comparable starting motors for gasoline engines due to（）
A. higher speed required
B. flywheel-effect
C. lower starting temperatures
D. higher compression pressures
[单项选择]Before doing any work on a hydraulic system equipped with accumulators, you should（）
A. drain the accumulators and purge with oxygen
B. bleed off all stored energy from the accumulators completely
C. charge the accumulators to prevent system energy loss
D. pump the hydraulic fluid into the accumulators to prevent fluid loss
