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Engineering :: Automobile Engineering


51.  For a four stroke engine the maximum power output is reached at an air quantity
A. Deficient by 5 to 10 percent B. Deficient by 15 to 20 percent
C. Deficient by 25 to 30 percent D. Surplus by 5 to 10 percent
E. Surplus by 15 to 20 percent    

52.  In a petrol engine, the gas which does not burn and passes out without transformation is
A. Oxygen B. Carbondioxide
C. Carbon monoxide D. Nitrogen
E. Water vapour    

53.  In a Diesel engine, during combustion the pressure may increase at a range of
A. 10-15 atm B. 15-20 atm
C. 20-30 atm D. 55-75 atm
E. Depends on engine size and speed    

54.  In a Diesel engine, the temperature of gases under full load may be of the order of
A. 100?C B. 150-200?C
C. 200-300?C D. 500-550?C
E. 900-1000?C    

55.  Which one of the following does not form a part of the fuel supply system for a Diesel engine?
A. Supply pump B. Filter
C. Air cleaner D. Spray nozzles
E. Injector    

56.  In a Diesel engine the fuel injection pressure is usually in the range
A. 100 to 170 atm B. 60 to 70 atm
C. 30 to 40 atm D. 20 to 25 atm
E. 10 to 15 atm    

57.  In a S.I. engine high air velocity through air hom may be of the order of
A. 1 m/s B. 5 m/s
C. 10 m/s D. 50 m/s
E. 100 m/s    

58.  For S.I. engine carburettor the float is usually made of
A. Brass sheet B. Nylon
C. Cast iron D. Either (A) or (B)
E. Either (B) or (C)    

59.  Which air cleaner is considered to be most effective in Diesel engines?
A. Dry type B. Wet type
C. Oil bath type D. Whirl type
E. All are equally effective    

60.  In case of oil bath type air cleaner, the oil sediments formed by the dust must be removed
A. Every day B. Weekly
C. Monthly D. After about 500 km
E. After about 5000 km    




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