In the suction stroke, the crankshaft is rotating clockwise and the piston is moving （） the cylinderThe inlet valve is （） and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.
1、What is the speed of the crankshaft in
What is the speed of the crankshaft in a four-stroke/cycle engine when the camshaft is turning at 750 rpm?（）A375 RPMB500 RPMC750 RPMD1500 RPM
2、In four strokes engine, the cycle of e
In four strokes engine, the cycle of events is completed in four strokes of （）.Athe cylinderBthe crankshaftCthe pistonDthe cross-head
3、Pitting in the suction areas of a cent
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.AcavitationBelectrolysisCabrasionDcorrosio
4、In a four-stroke engine the camshaft r
In a four-stroke engine the camshaft rotates at （）.Ahalf the engine speedBtwice the engine speedCthe engine speedDfour times the engine speed
5、Small crack in the crankshaft bearing
Small crack in the crankshaft bearing surface of a diesel engine are an indication of（）Acorrosion frettingBinsufficient lubricationCabnormal wearDfatigue failure
6、In the suction stroke air is induced i
In the suction stroke air is induced into the cylinder （）In the compression stroke the air is compressed.Aby an fuel valveBthrough an inlet valveCwith an exhaust valveDfrom an outlet valve