A . half the engine speed
B . twice the engine speed
C . the engine speed
D . four times the engine speed
[单选题]In a four-stroke engines the camshaft rotates at ().A . half the engine rotational speedB . twice the engine rotational speedC . the engine rotational speedD . four times the engine rotational speed
[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]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]In the four-stroke engine, it takes () to make one power stroke.A . one propulsionB . two propulsionsC . two revolutionsD . one revolutio
[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]For an ordinary four-stroke engine the inlet valves open ()A . after TDCB . before TDCC . after BDCD . before BDC
[单选题]In an ordinary four-stroke engine the exhaust valves open ()A . after TDCB . before TDCC . after BDCD . before BDC
[单选题]For an ordinary four-stroke engine the exhaust valves open ().A . after TDCB . before TDCC . after BDCD . before BDC
[单选题]If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be().A . 525 RPMB . 775 RPMC . 1550 RPMD . 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