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 specifiedB.not less than 120 feet per minuteC.not more than 120 feet per minuteD.not more than 90 feet per minute
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
相关考题：
If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will .A.have a larger than normal dead bandB.produce excessive speed response to a load changeC.respond slowly to any change in engine loadD.stabilize engine speed at the new governor setting
A governor automatically controls engine speed by regulating ___ .A.fuel supplyB.firing orderC.engine loadD.oil level
The engineer ______ the watch to the relieving officer if there is reason to believe that the latter is obviously not capable of carrying out the watch-keeping duties effectively.A.shall take overB.shall not take overC.shall hand overD.shall not hand over
On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the______.A.accumulator spring compressionB.balance pistonC.compensating(补偿) needle valveD.proportional piston
Where one of two vessels is to keep out of the way the other________.A.shall not keep her course but shall keep her speedB.shall not keep her course and speedC.shall keep her course but change her speedD.shall keep her course and speed
The load sharing characteristics of two diesel generators operating in parallel are mostly dependent on their governor ______.A.load limit settingsB.idle speed settingsC.speed limit settingsD.speed droop settings
The required portable radio shall be stored in the proper location and be ______．A.Equipped with an approved carrying caseB.Equipped with spare batteriesC.Readily accessible for transfer to a lifeboatD.In a waterproof enclosure
单选题If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will （）Ahave a larger than normal dead bandBproduce excessive speed response to a load changeCrespond slowly to any change in engine loadDstabilize engine speed at the new governor setting
单选题The maximum speed of lowering for a lifeboat on gravity davits is controlled by the（）.Alimit switchesBemergency disconnect switchCgovernor brakeDposition of the counterweight on the brake handle
单选题For most diesel propulsion and generator engines, the over-speed trip device will stop the engine by （）Amoving the governor control to stopBshutting off the lubricating oil supplyCtripping the governor emergency stop leverDshutting off the fuel supply
单选题On most diesel engines, the governor controls the output speed by （）.Acontrolling the amount of fuel injected into the cylindersBvarying the speed of the turbochargerCadjusting the compression ratioDchanging the timing of the fuel injection camshaft
单选题A fully loaded motor-propelled lifeboat must be capable of attaining a speed of at least（）.A3 knots in smooth waterB6 knots in smooth waterC3 knots in rough waterD6 knots in rough water
单选题The governor brake shall be capable of controlling the speed of lowering a fully equipped lifeboat with its complement of persons on board at（）.Asafe speed only specifiedBnot less than 120 feet per minuteCnot more than 120 feet per minuteDnot more than 90 feet per minute
单选题The device used to limit engine torque at various engine speeds is called a （）Aspeed limiting governorBvariable speed governorCconstant speed governorDload limiting governor
单选题To correct a hunting problem in a main propulsion diesel engine hydraulic governor, you should （）.Aincrease the governor oil pressureBadjust the speed droop settingCadjust the speeder spring travelDadjust the compensating needle valve
单选题If a main propulsion diesel engine hunts excessively at idle speed, you should （）Aadjusts the idle speed controlBdrain and flushes the governor and replace the oilCadjusts the compensating needle valve
单选题The force acting on a single cargo runner which is vertically lifting or lowering a load is greatest when（）.Adecelerating when lowering the loadBdecelerating when raising the loadClowering the load at constant speedDraising the load at constant speed
单选题Defective governor in a diesel engine may lead to （）.Asmoky exhaustBstarting failureCignition relayDover speed
单选题The required amount in the change of speed necessary before a governor will make a corrective movement is known as （）.Aspeed droopBsensitivityCstabilityDpromptness
单选题Increasing the load on an engine equipped with a constant speed mechanical governor, will cause the engine speed to initially （）.AincreaseBdecreaseCfluctuateDremain constant
单选题On a diesel engine equipped with a hydraulic speed control governor, hunting in many cases can be corrected by adjusting the （）Aaccumulator spring compressorBbalance pistonCcompensating needle valveDproportional piston
单选题A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to （）Adecrease onlyBincrease onlyCdecrease slightly then returned to original speedDincrease slightly then returned to original speed
单选题Friction developing between the moving parts of a governor, governor linkage and control valve will cause the governor to （）.Areact with insufficient speed droopBfail to react to small speed changesChave excessive sensitivity to small speed changesDremain in the neutral position
单选题The ability of the governor to prevent fluctuations in engine speed is termed （）.AsensitivityBstabilityCpromptnessDspeed droop
单选题On a diesel engine equipped with an isochronous governor, if the “speed droop” control is reduced to the “zero” setting, the engine （）Aspeed will drop drastically with any increase in loadBwill stop due to zero fuel supplyCwill stall upon application of loadDspeed will remain fairly constant despite load changes
单选题A device which functions to bring a diesel engine to a full stop to protect it from damage is known as a/an （）Atorque limiterBover-speed tripCover-speed governorDload limit governor