A . 525 RPM
B . 775 RPM
C . 1550 RPM
D . 1800 RPM
[单选题]In a four-stroke/cycle diesel engine, the camshaft rotates at ()A . twice the crankshaft speedB . half the crankshaft speedC . the same speed as that of the crankshaftD . a speed independent of that of the crankshaft
[单选题]Scavenging in a four-stroke/cycle diesel engine occurs during the ().A . last part of the exhaust stroke, and the first part of the intake strokeB . last part of the intake stroke onlyC . early part of the injection stroke onlyD . early part of the p
[单选题]On a four-stroke diesel engine, when the piston is driven downwards by the expanding gas, it delivers power to the crankshaft through the ().A . thrust blockB . sounding rodC . connecting rodD . push rod
[单选题]The four-stroke engine is used for () and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 rev/min.A . alternatorB . turbo-chargerC . remote controllerD . windla
[单选题]The working cycle of a four-stroke diesel engine consists of four events:()(1) compression(2) expansion(3) exhaust(4) suctionThe correct sequence isA . (4)-(2)-(3)-(1)B . (4)-(3)-(1)-(2)C . (4)-(3)-(2)-(1)D . (4)-(1)-(2)-(3)
[单选题]If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the ().A . cylinder compression pressure may not be high enoughB . cylinder compression temperature may be too highC . fuel oil injec
[单选题]The camshaft on a four-stroke/cycle diesel engine provides a means to operate the ().A . fuel injectorsB . exhaust valvesC . intake valvesD . all of the above
[单选题]For an ordinary four-stroke diesel engine the exhaust valves close ().A . after TDCB . before TDCC . after BDCD . before BDC
[单选题]In the four-stroke engine, it takes () to make one power stroke.A . one propulsionB . two propulsionsC . two revolutionsD . one revolutio
[单选题]For an ordinary four-stroke engine the inlet valves open ()A . after TDCB . before TDCC . after BDCD . before BDC