单选题The position of () on the crosshead on a large diesel engine is determined by dowel pins.Athe guidewayBthe piston rodCthe crosshead shoesDthe interlocked circlip

单选题
The position of () on the crosshead on a large diesel engine is determined by dowel pins.
A

the guideway

B

the piston rod

C

the crosshead shoes

D

the interlocked circlip


参考解析

解析: 暂无解析

相关考题:

The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by_______.A.large conical springsB.compressed air pressureC.hydraulic pressureD.exhaust gas pressure

单选题On a large low-speed main propulsion diesel engine, lower main bearing wear is usually measured by using a/an ()Adial indicatorBoutside caliperCbridge gaugeDtram rod

单选题In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the()Atop of the ring grooveBback of the ring grooveCbottom of the ring grooveDpiston ring end clearance

单选题While underway, which of the following would be the FIRST step in reversing a direct reversing large, low-speed, main propulsion, diesel engine?()AManually trip the over-speed deviceBInterrupt the fuel flow to the engineCDisengage the safety interlockDSlide the camshaft to the neutral position

单选题Large crosshead type engine generally has two lubrication systems, a function performed only by crankcase oil system is()AlubricatingBcoolingCcleaningDneutralizing

单选题() can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.AThe medium speed 4-stroke trunk piston engineBThe low speed 2-stroke crosshead engineCThe medium speed 2-stroke crosshead engineDThe low speed 4-stroke trunk piston engine

单选题Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?()ABypass the after-cooler to operate at speedBRun at reduced speed until the cooler can be repaired or renewedCSwitch to diesel fuel and run at full speedDNothing need to be done due to the low heating value of heavy fuel

单选题Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by ()Aincreasing the quantity of starting airBincreasing the lube oil pressureCheating the engine fuel supplyDheating the engine coolant

单选题Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?()ALubrication to the defective cylinder should be increasedBCooling water temperature to the engine should be increasedCOnly the turbocharger speed should be reducedDEngine speed should be reduced

单选题The power developed by a large slow-speed main propulsion diesel engine is dependent upon the ()Aquantity of air it takes in and retains in the cylinders during a given time periodBproportion of trapped air that is utilized in the combustion processCthermodynamic efficiency of the engine cycleDall of the above

单选题Large marine diesel engines of crosshead construction generally have two systems of lubrication: a total loss system feeding the () and a recirculation system lubricating the running gear and cooling the piston.Acylinder liners and piston ringsBmain bearingsCcrankpin bearingsDturboblower

单选题The main function of tie rods in the construction of large, low speed diesel engines is to().Astiffen the bedplate in way of the main bearings to increase the engines longitudinal strengthBaccept most of the tensile loading that results from the firing forces developed during operationCmount the engine frame securely to the hull to prevent shaft coupling misalignmentDconnect the crosshead solidly to the piston rod

单选题Following the failure of one turbocharger on a large, crosshead, main propulsion diesel engine, fitted with multiple turbochargers, which of the following actions should be taken prior to further operation of the engine? ()ABlank off the exhaust gas inlet to the damaged turbochargerBSecure cooling and lubrication to the damaged turbochargerCLock the rotor of the damaged turbochargerDAll of the above

单选题During maneuvering operations for a direct reversing large, low-speed, main propulsion diesel engine, which of the following actions is used to stop the shaft from turning prior to reversing the engine rotation?()AFlywheel inertiaBAdmission of starting airCThe way of the vesselDsecuring of fuel to the cylinders

单选题In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?()ABed plateBColumnCEntablatureDTie rod

单选题Exhaust valve openings in a diesel engine cylinder head are made as large as practical to ()Aincrease back pressure during the exhaust processBfacilitate periodic replacement of the valvesCreduce the pumping loss associated with scavengingDreduce tension on valve springs

单选题The is employed to warm up a large diesel engine before its starting()Ahot airBhot boiler waterCcylinder waterDhot seawater

单选题One method of constructing large marine diesel engines and reducing the total engine frame weight is through ().Acasting interlocking componentsBwelding plates to form sections for assemblyCforging integral componentsDcase hardening integral components

单选题A large two-stroke/cycle direct reversing diesel engine is to be reversedPrior to the admission of starting air you must ()Aline up the engine fore restarting with light diesel oilBreposition the fuel injection camCchange the intake and exhaust valve cam positionsDplace the starting cam in the intermediate position

单选题A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a ()Alow TBN valueBhigh alkaline reserveClow flash pointDhigh pour point

单选题On a large diesel engine installation, crankshaft axial alignment is maintained by the ()Apiston rod guidesBengine thrust bearingCcrosshead bearingDmain shaft flexible coupling

单选题The position of () on the crosshead on a large diesel engine is determined by dowel pins.Athe guidewayBthe piston rodCthe crosshead shoesDthe interlocked circlip

单选题Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?()APre-lube cylinders with hand cranksBOpen all air space drain cocksCOpen all indicator valvesDAll of the above

单选题The closing of the exhaust valves used on a modern, large, low-speed, main propulsion diesel engine may be directly provided by ().Alarge conical springsBcompressed air pressureChydraulic pressureDexhaust gas pressure

单选题Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure, which of the listed pre-start procedures should be carried out?()AEnsure proper cylinder lube oil flowBOpen all air space drain cocksCOpen all indicator valvesDall of the above