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Mechanical Engineering :: Automobile Engineering

  1. The stroke of an engine is the

  2. A.
    volume of the cylinder
    B.
    length of the connecting rod
    C.
    internal diameter of the cylinder
    D.
    distance between T.D.C. and B.D.C.

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  3. The function of a second ring is that it is a

  4. A.
    back up compression ring which will work in place of the top ring when it is broken
    B.
    compression ring and aids the top ring in sealing and cooling
    C.
    back up oil control ring which will work in place of the bottom ring when it is broken
    D.
    cushion ring which prevents piston slap and knock

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  5. The characteristic that is enhanced by the use of cylinder sleeves is

  6. A.
    cooling efficiency
    B.
    resistance to wear
    C.
    lubrication performance
    D.
    none of these

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  7. The differential ensures that each wheel is driven at a speed which corresponds to the distance it must travel around a corner, and it consequently prevents against excessive tyre wear.

  8. A.
    Agree
    B.
    Disagree

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  9. The rating of C.I. engine fuel (Diesel) is given by

  10. A.
    octane number
    B.
    performance number
    C.
    cetane number
    D.
    none of these

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  11. Which part of the automobile tyre is subjected to greatest flexing action ?

  12. A.
    Bead
    B.
    Side wall
    C.
    Shoulder
    D.
    Tread

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  13. The temperature at which tyre inflation pressure should be checked is

  14. A.
    20°C
    B.
    25°C
    C.
    35°C
    D.
    ambient temperature

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  15. The calorific value of Diesel is about

  16. A.
    36.5 MJ/kg
    B.
    38.5 MJ/kg
    C.
    42.5 MJ/kg
    D.
    45.5 MJ/kg

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  17. The negative plates of a lead acid battery has

  18. A.
    lead peroxide (PbO2)
    B.
    spongy lead (Pb)
    C.
    lead sulphate (PbSO4)
    D.
    sulphuric acid (H2SO4)

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  19. The function of oil-control rings is that it

  20. A.
    lubricates the cylinder wall by releasing oil from its hole
    B.
    keeps the cylinder wall lubricated by holding oil in its channel
    C.
    prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan
    D.
    maintains a seal and prevents escape of burned gases and oil leakage

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