PRESSURE DROP AND SPILL VALVE活门的作用是()。A、当高压燃油泵的出口压力过高时,该活门打开,释放一部分压力B、当低压燃油泵的出口压力过高时,该活门打开,释放一部分压力C、当PRSOV的出口压力过高时,该活门打开,释放一部分压力D、当燃油喷嘴的出口压力过高时,该活门打开,释放一部分压力

PRESSURE DROP AND SPILL VALVE活门的作用是()。

  • A、当高压燃油泵的出口压力过高时,该活门打开,释放一部分压力
  • B、当低压燃油泵的出口压力过高时,该活门打开,释放一部分压力
  • C、当PRSOV的出口压力过高时,该活门打开,释放一部分压力
  • D、当燃油喷嘴的出口压力过高时,该活门打开,释放一部分压力

相关考题:

Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?A.Pressure-reducing valveB.Unloading valveC.Counterbalance valveD.Pressure-relief valve

If the head pressure of a reciprocating refrigeration compressor is excessiveA.the relief valve should open before the high pressure cutoutB.the relief valve should open and allow the excess refrigerant to flow to the receiverC.the high pressure cutout switch should operate before the relief valve opensD.you should close the discharging valve

What causes the lube oil pressure of the engine to drop ?

You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take?A.Cut in another IG fan to increase gas flowB.Open the pressure control valve until the pressure increasesC.Open the tank isolation valve to the fully open positionD.Reduce the pumping rate

The opening in the deck beneath the anchor windlass that leads to the chain locker is the ______.A.Hawse pipeB.Fall pipeC.Drop-pipeD.Spill pipe

ENG VALVE CLOSED指哪个活门()A、HMVB、PRSOVC、HPSOVD、spar valve

隔离活门控制电门“VALVE”灯亮说明:()。A、活门关闭B、活门断开C、活门不一致D、引气关断

燃调中哪个部件控制近进慢车和地面慢车A、全速监控器(All Speed Governor)B、压降监控器(Pressure-drop governor)C、P3P储压器D、近进慢车电磁活门

哪个FMU内的部件调节燃油流量?()A、PRSOVB、METERING VALVEC、DUMP VALVED、PRESSURE DROP AND SPILL VALVE

ENG VALVE CLOSED灯熄灭,意味着()A、活门开B、活门关C、活门在转换位D、活门故障

单选题() are used to limit the pressure in any particular portion and mainly control the pressure after the valve.ARelief valvesBCheck valvesCSafety valvesDReducing valve

单选题Petroleum cargo tanks should not be topped off at deck level when loading on a cold day because().Aa subsequent temperature rise will cause the cargo to overflowBair pockets may cause the cargo to bubble out of the ullage holeCthe increased viscosity of the product requires higher loading pressure which increases the chances of a spillDthe tank valve may be stiff and a spill will occur before the valve can be closed

单选题A more sophisticated pressure reducing valve incorporates a pilot valve which controls the fluid above the valve operating piston in response to downstream pressureThe bold and italic word “which” means ().Aa pressure reducing valveBa pilot valveCan operating pistonDdownstream pressure

单选题A pressure drop through the refrigerant liquid line may cause ().Asolenoid valve to seizeBcompressor to huntCformation of flash gas in the liquid lineDexpansion valve to freeze open

单选题During the fuel injection period, fuel pressure must exceed cylinder gas pressure to ().Aensure penetration and distribution of the fuel in the combustion chamberBensure the needle valve is flushed clean during each injectionCprevent combustion gas blowback into the open needle valveDprevent reflected pressure waves when the needle valve closes

单选题If the head pressure of a reciprocating refrigeration compressor is excessive, ().Athe relief valve should open before the high pressure cutoutBthe relief valve should open and allow the excess refrigerant to flow to the receiverCthe high pressure cutout switch should operate before the relief valve opensDyou should close in on the suction valve

单选题If the head pressure is too high,()Athe relief valve should open before the high-pressure cutoutBthe relief valve should open and let excess refrigerant go to receiverCthe high-pressure cutout switch should operate before the relief valve opensDclose in on the suction valve

单选题Why is it important for fuel oil tanks not to be topped off at the inner bottom level when loading on a cold day?()AIncreased viscosity of the product needs higher loading pressure, which increases the chances of a spillBAir pockets may cause the fuel to bubble out of the ullage holeCThe temperature rise of the fuel will cause an overflowDFueling valve may become stuck closed and cause the fuel oil to spill before the valve can be opened

单选题The arrangement and shape of the cams on a diesel engine camshaft directly control which of the listed groups of operating conditions?()Aspeed, torque, and horsepower productionBfiring order, valve timing, and valve liftCfuel consumption, efficiency, and cylinder pressureDscavenge pressure, compression ratio, and exhaust pressure

单选题The thermal expansion valve reacts directly to the ()Atemperature in the space being cooledBliquid refrigerant pressure at the solenoid valveCpressure drop across the evaporator coilsDrefrigerant gas superheat at the coil outlet

单选题You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take? ()ACut in another IG fan to increase gas flowBOpen the pressure control valve until the pressure increasesCOpen the tank isolation valve to the fully open positionDReduce the pumping rate

单选题A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an ().Aevaporator pressure decreaseBevaporator coil over-feedCevaporator capacity increaseDexpansion valve diaphragm rupture

单选题The thermostatic valve has a throttling action, that is to say the valve can()Astop the refrigerant from flowingBforce the refrigerant to flowCcause the refrigerant pressure to riseDcause the refrigerant pressure to fall

单选题An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will().Acause loss of hydraulic oil from the systemBresult in extreme damage to the pumpCcause damage to the pump ff not continually drained from the pump casingDresult in the system high side pressure to substantially drop off

单选题The low pressure side of a refrigeration system is considered to exist from the ().Aexpansion valve to the compressorBreceiver to the expansion coilCexpansion valve to the evaporatorDcondenser to the expansion valve

单选题Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?()AThe condenser and the expansion valveBThe king valve and the solenoid valveCThe compressor and the expansion valveDThe condenser and the solenoid valve

单选题A pressure drop in the liquid line of a refrigeration system may cause()Athe solenoid valve to seizeBthe compressor to huntCflash gas to form in the liquid lineDthe expansion valve to freeze open