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Mechanical Engineering :: Automobile Engineering

  1. The function of a first compression ring (top ring) is that it

  2. A.
    increases the combustion temperature
    B.
    creates swirl
    C.
    maintains a seal and prevents the fuel leakage
    D.
    maintains a seal and prevents escape of burned gases and loss of pressure in the combustion chamber

  3. The number of exhaust manifolds in a V-6 engine are

  4. A.
    one
    B.
    two
    C.
    four
    D.
    eight

  5. The driveshafts are connected to the differential and wheel hubs through universal joints because the universal joints

  6. A.
    absorb the vibrations transferred from the surface of the road
    B.
    compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.
    C.
    absorb any difference in speed between the left and right wheels when the vehicle is turning
    D.
    none of the above

  7. The function of antilock brake system (ABS) is that is

  8. A.
    reduces the stopping distance
    B.
    minimises the brake fade
    C.
    maintains directional control during braking by preventing the wheels from locking
    D.
    prevents nose dives during braking and thereby postpones locking of the wheels

  9. A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

  10. A.
    improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion
    B.
    allows the steering wheel to be turned by a greater amount when steering
    C.
    makes the steering more responsive
    D.
    reduces the amount of kick-back for large steering angles

  11. The braking control type traction control system (TCS) generally operates in the speed range of

  12. A.
    less than 20 kmph
    B.
    less than 40 kmph
    C.
    less than 60 kmph
    D.
    more than 60 kmph

  13. If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on

  14. A.
    too lean mixture
    B.
    stoichiometric mixture
    C.
    most economical mixture
    D.
    too rich mixture

  15. The two rows of cylinders in a 'V' type engine are generally arranged at

  16. A.
    45°
    B.
    60°
    C.
    90°
    D.
    130°

  17. The crescent-shaped cavity on the piston head top surface is called as

  18. A.
    piston oil hole
    B.
    snap ring
    C.
    valve recess
    D.
    valve clearance

  19. The octane rating of petrol commerically available is

  20. A.
    85-95
    B.
    95-100
    C.
    100-110
    D.
    110-125