单选题Diesel engine cylinder head test cocks are used to （）Acheck cylinder lubricationBconnect the pressure indicator pressureCtest cylinder headsDconnect the exhaust gas pyrometers
单选题
Diesel engine cylinder head test cocks are used to （）
A
check cylinder lubrication
B
connect the pressure indicator pressure
C
test cylinder heads
D
connect the exhaust gas pyrometers
参考解析
解析：
暂无解析
相关考题：
High firing pressures and low exhaust temperature in a diesel engine may resultfrom( ).A.decreased piston to cylinder head clearanceB.increased exhaust system back pressureC.early fuel injection timingD.low scavenge air temperature
Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?A.Leaking seal ringB.Insufficient heat transfer from the exhaust valvesC.Blocked cooling water passages to the headD.Excessive scavenging air provided to the engine
How does combustion air enter the cylinder of a two-cycle diesel engine ? Through _______．A.Cylinder head valvesB.PortsC.Turbo chargersD.Bleeder valves
A Kort nozzle is a(n) ______.A.hollow tube surrounding the propeller used to improve thrustB.nozzle attached to a firefighting hoseC.intake valve on a diesel engineD.piston cylinder on a diesel engine
单选题Low compression in a diesel engine can be caused by （）Aclogged coolant passagesBa leaking cylinder head gasketClow fuel oil pressureDworn or broken cylinder liner sealing rings
单选题A diesel engine cylinder head can crack as a result of （）Aa leaking seal ringBheat transfer from exhaust valvesCrestricted cooling passagesDoverheated intake valves
单选题One end of a diesel engine cylinder is sealed by the cylinder head and the other end by the （）AcrankcaseBpistonCcylinder linerDcrank cheek
单选题If a crankcase explosion has occurred in a diesel engine, and the crankcase remains intact, which of following precautions should be observed?（）AThe cylinder indicator cocks should be openedBThe sump lube oil scavenge pump should be secured immediatelyCThe explosion relief valves should be manually openedDThe crankcase should remain unopened until the engine has cooled
单选题Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?（）ALeaking seal ringBInsufficient heat transfer from the exhaust valvesCBlock cooling water passages to the headDExcessive scavenging air provided to the engine
单选题Diesel engine cylinder head test cocks are used to（）Acheck cylinder lubrication prior to starting engineBconnect exhaust gas analyzers to determine engine efficiencyCpressure test cylinder heads to check for leaksDremove moisture accumulations from cylinder prior to starting
单选题In the cylinder head of a two-stroke/cycle diesel engine, valves are used for（）Aair intakeBa fuel outletCcooling water inletsDexhausting combustion gas
单选题Which of the following statements represents the reason for rolling over a diesel engine with the cylinder indicator cocks open prior?（）ATo test the starting systemBTo remove air bubbles from the jacket waterCTo ensure that the lube oil system delivers pressureDTo ensure foreign material (water etc) is not present in the cylinders
单选题The function of the piston compression rings used in a diesel engine is to （）Aseal the space between the piston and linerBtransmit heat from the piston to the cylinder linerCreduce the amount of combustion gas blow-byDall of the above
单选题A change in the quality of fuel atomization by a diesel engine fuel injector would be caused by a/an （）Aincrease in engine speedBincrease in cylinder turbulenceCleaking needle valveDreduction in cylinder turbulence
单选题If water is found in the crankcase of a diesel engine, the cause may be due to（）Aa cracked cylinder headBa leaky cylinder head gasketCa cracked cylinder linerDany of the above
单选题Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to （）Atest the starting systemBremove condensation from the cylindersCcheck the compressionDcheck for proper lube oil pressure
单选题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（）Abuild up the piston crown by metal sprayingBbuild up the cylinder head by metal sprayingCinsert shims between the crankpin bearing box and the connecting rod footDinstall a thinner head gasket
单选题How does combustion air enter the cylinder of a two-cycle diesel engine?（）ACylinder head valvesBPortsCTurbo chargersDBleeder valves
单选题Engine coolant accumulating in the diesel engine lubricating oil can result from a （）Alow oil pressureBhigh coolant pressureCleaking fuel injectorDcracked cylinder head or liner
单选题What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）ASpark plugBHeat of compressionCCarburetorDGlow plug
单选题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）Aa cracked cylinder linerBclogged intake portsCbroken piston ringsDa faulty head gasket
单选题Which of the following statements is correct for the design and installation of diesel engine cooling water systems?（）AAn alarm device with audible and visible signals is required for all cooling water systemsBPropulsion engines with bores over 200 mm are to be fitted with cooling water jacketsCEach totally enclosed cooling system shall be provided with a suitable head tankDDrain cocks are to be provided at the lowest points of all cylinder water jackets
单选题Piston compression rings used in a diesel engine function to （）Atransfer heat from the cylinder to the pistonBscrape oil from the sides of the pistonCseal the combustion space from the crankcasesDprevent any piston contact with the cylinder liner
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）Anoise coming from that air starting valveBcontinuous operation of the starting air compressorCzero air pressure in the air starting systemDoverheated starting air pipe to the cylinder head
单选题A Kort nozzle is a(n)（）.Ahollow tube surrounding the propeller used to improve thrustBnozzle attached to a firefighting hoseCintake valve on a diesel engineDpiston cylinder on a diesel engine
单选题Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.Acylinder coversBlubricating spaceCcrossheadDexhaust manifold
单选题Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in （）Aan air bound fuel systemBdamage to cylinder heads and pistonsCexcessive fuel injectionDexcessive air valve lift