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Engineering :: Automobile Engineering


71.  The purpose of the dynamo in an automobile is to
A. Supply electric power B. Convert mechanical energy into electrical energy
C. Act as a reservoir of electrical energy D. Continually recharge the battery
E. Partly convert engine power into electric power    

72.  The purpose of crankcase ventilation is to
A. Cool the oil B. Remove vaporized water and fuel
C. Supply oxygen to the crank case D. Assist in maintaining the viscosity of oil

73.  The device in the cooling system that increses the boiling point of the water in the system is called
A. Radiator B. Drain plug
C. Water jacket D. Pressure cap
E. Vacuum valve    

74.  In the fuel injection pumps for Diesel engine the effective pressure strokes of the plungers in the fuel injection pump are regulated by means of a
A. Fuel pump B. Control rack
C. Needle valve D. Camshaft
E. Check valve    

75.  The fuel lines connecting the fuel injection pump individual elements with corresponding injector should have
A. Minimum length B. Varying length
C. Length in increasing order D. Length in decreasing order
E. Equal length    

76.  In the fuel injection pump of a Diesel engine, the fuel injection timing is adjusted by adjusting the
A. Delivery valve B. Rotation plunger
C. Lift of plunger D. Pump camshaft
E. Tappets    

77.  Cetane number of a Diesel fuel is measure of
A. Volatility B. Viscosity
C. A.P.I. specific gravity D. Ignition quality
E. Delay period    

78.  The Diesel fuel pump is designed to supply fuel
A. Just sufficient against the demand of the injection pump B. In excess quantity than required by the injection pump
C. In less quantity than required by the injection pump D. At constant quantity at all engine speeds
E. In sufficient quantity in accordance with the engine speed    

79.  The function of Diesel feed pump (when ever provided) is to
A. Pump the fuel from the injection pump to the injector B. Pump the fuel from the tank into the injection pump
C. Pump the oil into the main gallery D. Send back the fuel from the injector into the tank
E. Pump the fuel to the injector    

80.  The fuel is injected into the cylinder in Diesel engine when the piston is
A. Exactly at T.D.C. after compression stroke B. Just after T.D.C. during exhaust compression stroke
C. Approaching T.D.C. during compression stroke D. Approaching T.D.C. during exhaust stroke




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