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Engineering :: Automobile Engineering

61.  The efficiency of an oil bath type air cleaner is usually
A. 50% B. 60%
C. 80% D. 90%
E. 99%    
62.  In a scooter engine the cylinder is lubricated by
A. Pressure lubrication B. Splash lubrication
C. Lubrication plug D. Mixing lubricating oil in the fuel
E. Cylinder does not require lubrication    
63.  In forced feed lubrication system the device used to guard against excessive oil pressure is known as
A. Release chamber B. Balancer
C. Relief valve D. Stop valve
E. Pressure actuator    
64.  Water in lubricating oil aids in
A. Decomposition B. Oxidation
C. Formation of solution D. Dilution
E. Burning    
65.  Dilution of lubricating oil is caused by
A. Water B. Solid contaminants like dust, etc.
C. Solid combustion residues D. Worn off particles
E. Fuels    
66.  Maximum danger of ol dilution by fuel in an engine occurs when
A. Engine is running at overload B. Engine is running at rated load
C. Engine is running on lean mixture D. Choke circuit is cut in for too long a period
E. All of the above    
67.  About 5% of fuel in the lubricating oil lessen the ability to lubricate by about
A. 1% B. 5%
C. 10% D. 30%
E. 90%    
68.  A hot plug has a
A. Long heat path B. Short heat path
C. Heat dam D. Short insulator
E. Long insulator    
69.  The centrifugal advance mechanism is located
A. One the camshaft B. At the drive gear
C. On the crankshaft balancer D. In the distributor
E. In the camshaft gear    
70.  Ignition coil is used to
A. Step up current B. Step down current
C. Step up voltage D. Step up power
E. Step down voltage    

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