61. The oil pumps are generally driven by
A. camshaft
B. rocker shaft
C. crankshaft
D. damper pulley
62. In a dry sump lubrication system, a scavenging pump is used to
A. pump oil from sump to tank
B. pump oil directly to all moving parts
C. develop additional oil pressure
D. pump oil from tank to sum
63. Excessive oil pressure in the lubrication system may be due to
A. less quantity of engine oil in sump
B. incorrect adjustment of relief valve
C. less suction effect on the suction pipe
D. none of the above
64. when oil pressure increases above set limit, oil returns to sump through
A. pressure relief valve
B. by pass valve
C. oil filter
D. oil pump