网友您好, 请在下方输入框内输入要搜索的题目:
题目内容
(请给出正确答案)
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?()
A
Ensure proper cylinder lube oil flow
B
Open all air space drain cocks
C
Open all indicator valves
D
all of the above
参考答案
参考解析
解析:
暂无解析
更多 “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?()A Ensure proper cylinder lube oil flowB Open all air space drain cocksC Open all indicator valvesD all of the above” 相关考题
考题
In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces_______ .A.all of the oil used by the engine through a filterB.some of the oil used by the engine through a filterC.some of the oil used by the engine through a centrifugeD.all of the oil used by the engine through a centrifuge
考题
单选题The marine diesel engine is a type of diesel engine used on ships The () of its operation is not very difficult to understand.A
principleB
principalC
causeD
case
考题
单选题Large crosshead type engine generally has two lubrication systems, a function performed only by crankcase oil system is()A
lubricatingB
coolingC
cleaningD
neutralizing
考题
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.A
The medium speed 4-stroke trunk piston engineB
The low speed 2-stroke crosshead engineC
The medium speed 2-stroke crosshead engineD
The low speed 4-stroke trunk piston engine
考题
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?()A
Bypass the after-cooler to operate at speedB
Run at reduced speed until the cooler can be repaired or renewedC
Switch to diesel fuel and run at full speedD
Nothing need to be done due to the low heating value of heavy fuel
考题
单选题Which of the following operating conditions can occur when shims are removed from the joint between the foot of a marine type diesel engine connecting rod and the bearing box?()A
Decreased connecting rod bearing clearanceB
Increased connecting rod bearing clearanceC
Decreased compression ratioD
Increased compression ratio
考题
单选题Which of the following gases represents the greatest threat to personnel safety in an engine room where the exhaust is leaking from a diesel engine?()A
Carbon dioxideB
Carbon monoxideC
Carbon trioxideD
Hydrogen sulfide
考题
单选题Trunk type diesel engine pistons are effectively cooled when heat is()A
radiated through the engine blockB
transferred to water cooled cylinder wallsC
conducted through the piston crownD
transferred to escaping exhaust gases
考题
单选题In a trunk type diesel engine piston, the thickness of the head or crown is determined by the() Ⅰ.statically balanced Ⅱ.heat dissipation requirementA
Ⅰ onlyB
Ⅱ onlyC
both Ⅰ and ⅡD
neither Ⅰ nor Ⅱ
考题
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? ()A
Blank off the exhaust gas inlet to the damaged turbochargerB
Secure cooling and lubrication to the damaged turbochargerC
Lock the rotor of the damaged turbochargerD
All of the above
考题
单选题The following preparations are essential for any () of marine diesel engine before it may be started.A
doingB
makeC
turnD
operating
考题
单选题In a diesel engine, a positive displacement type blower is usually ()A
gear drive by the engineB
driven by an exhaust gas turbineC
driven by a camshaftD
driven by separate motor
考题
单选题The diesel engine is a type of internal combustion engine which ignites the fuel by injecting it into hot, high pressure air in a ().A
air bottleB
air compressorC
crank caseD
combustion chamber
考题
单选题If the detergent type lubricating oil being used in a diesel engine is black, the oil ()A
must be centrifugedB
must by filteredC
must be changedD
is holding finely dispersed carbon in suspension
考题
单选题A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a ()A
low TBN valueB
high alkaline reserveC
low flash pointD
high pour point
考题
单选题During the power stroke of a four-stroke/cycle diesel engine, most of the side thrust of a trunk-type piston is absorbed by the()A
piston skirtB
pinionC
crossheadD
compression rings
考题
单选题A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?()A
Hydraulic startingB
Electric startingC
IgnitionD
Fuel
考题
单选题The position of () on the crosshead on a large diesel engine is determined by dowel pins.A
the guidewayB
the piston rodC
the crosshead shoesD
the interlocked circlip
考题
单选题Trunk-type diesel engine pistons are most effectively cooled by heat()A
conducted through the engine blockB
conducted to water cooled cylinder wallsC
conducted through the piston crownD
loss to escaping exhaust gases
考题
单选题()diesel engines generally have two systems of lubrication:()a total loss system feeding and a circulating system lubricating the running gear and cooling the pistons.A
Large crosshead type;crossheadsB
High speed;the cylindersC
Large crosshead type;the cylindersD
Four-stroke;pistons and cylinders
考题
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?()A
Pre-lube cylinders with hand cranksB
Open all air space drain cocksC
Open all indicator valvesD
All of the above
考题
单选题Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except()A
open the indicator cocksB
supply some CYL Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)C
put the fuel handle in the “stop” positionD
pump up the air bottle
考题
单选题The diesel engine is a type of ().A
turbine engineB
gas turbineC
steam engineD
internal combustion engine
考题
单选题“This increase in charge air density is accomplished on most modern diesel engine types by use of exhaust gas turbo-charging, in which a turbine wheel driven by exhaust from the engine is rigidly coupled to a centrifugal type air compressor” According to this sentence, we can know that increases density(), drives the compressor directly()A
a modern diesel engine;a turbine wheelB
a modem diesel engine;exhaust gasesC
a compressor;an exhaust gas turbochargerD
a compressor;a turbine wheel
考题
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?()A
Ensure proper cylinder lube oil flowB
Open all air space drain cocksC
Open all indicator valvesD
all of the above
热门标签
最新试卷