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Mechanical Engineering :: Automobile Engineering

Automobile Engineering - Section 1
Automobile Engineering - Section 2
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Automobile Engineering - Section 4
Automobile Engineering - Section 5
Automobile Engineering - Section 6
Automobile Engineering - section-7

  1. For the same maximum pressure and temperature

    2. A.
    Diesel cycle is more efficient than Otto cycle
    B.
    Otto cycle is more efficient than Diesel cycle
    C.
    both Otto cycle and Diesel cycle are equally efficient
    D.
    none of the above

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  2. The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

    3. A.
    enable the pump's fault-diagnosis function to operate
    B.
    warm up and lubricate the pump
    C.
    supply a large amount of fuel and thereby create a choke effect
    D.
    pressurise the fuel system before the engine is started

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  3. In which of the following conditions, the idle CO percentage should be measured with the vehicle ?

    4. A.
    Headlights and other electrical devices are switched off.
    B.
    Headlights and other electrical devices are switched on.
    C.
    Headlights and other lights are switched off.
    D.
    Headlights are switched on.

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  4. The mechanical efficiency (ηm) of an I.C. engine is equal to (where I.P. = Indicated power, B.P. = Brake power and F.P. = Frictional power)

    5. A.
    I.P/B.P.
    B.
    B.P/I.P.
    C.
    B.P/F.P
    D.
    F.P./B.P.

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  5. The lower cylindrical portion of the piston which improves piston cooling performance is called

    6. A.
    piston crown
    B.
    connecting rod
    C.
    piston pin boss
    D.
    piston skirt

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  6. The most effective method of controlling S.I. engine exhaust emission is by

    7. A.
    recirculating exhaust
    B.
    using catalytic converter
    C.
    using some additives in the fuel
    D.
    none of these

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  7. The power actually developed inside the engine cylinder is called as

    8. A.
    indicated power
    B.
    brake power
    C.
    frictional power
    D.
    none of these

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  8. When cornering, the differential generates a difference in the speed of the left and right wheels.

    9. A.
    True
    B.
    False

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  9. If clearance volume of I.C. engines is increased, the compression ratio will

    10. A.
    increase
    B.
    decrease
    C.
    remain constant
    D.
    be doubled

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  10. The basic function of the suspension is to

    11. A.
    absorb vibration and impact forces from the road surface
    B.
    ensure that the steering wheel can deliver a suitable amount of steering force
    C.
    ensure that wheel alignment is not disturbed during driving
    D.
    automatically correct the effects of over steering

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