57.  During idling action of the pump the following happens in the float chamber
A. it remains empty  
B. it remains filled  
C. it  is partially filled  
D. none of the above

58. The downward motion of the diaphragm in the pump produces
A. partial vacuum into chamber  
B. pressure in top chamber  
C. full vacuum in lower chamber 
D. partial vacuum in lower chamber

59. During idling action the diaphragm remains
A. in downward position  
B. in upward position  
C. in middle position 
D. no specific position

60.The oil pump outlet is connected to
A. oil gallery in cylinder block 
B. oil passage in rocker shaft 
C. timing case inlet union
D. filter inlet pipe

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