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


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

  • Correct Answer
  • using catalytic converter 


  • Automobile Engineering problems


    Search Results


    • 1. The discharged lead-acid battery has on its plates

    • Options
    • A. lead peroxide (PbO2)
    • B. spongy lead (Pb)
    • C. lead sulphate (PbSO4)
    • D. sulphuric acid (H2SO4)
    • Discuss
    • 2. An under-inflated tyre will wear the tread most

    • Options
    • A. near the centre
    • B. near the edges
    • C. in the lateral direction
    • D. in the cross direction
    • Discuss
    • 3. The rigid suspension is beneficial when

    • Options
    • A. it is desired to reduce the unsprung mass
    • B. it is desired to have more flexibility in design
    • C. it is desired to improve tyre-to-ground contact characteristics
    • D. large changes in load make it necessary to have a large suspension stroke
    • Discuss
    • 4. In which of the following conditions, the idle CO percentage should be measured with the vehicle?

    • Options
    • 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.
    • Discuss
    • 5. The function of positive crankcase ventilation (PCV) system is that it

    • Options
    • A. mixes fuel with air
    • B. promotes combustion by creating a swirling movement in the air-fuel mixture
    • C. returns blow-by gases from the crankcase to the intake system
    • D. feeds blow-by gases to the exhaust manifold
    • Discuss
    • 6. The included angle is the sum of the

    • Options
    • A. camber and castor
    • B. castor and S.A.I
    • C. camber and S.A.I.
    • D. camber and toe-in
    • Discuss
    • 7. The damper fluid leakage typically occur from

    • Options
    • A. upper damper mounting
    • B. bottom of damper
    • C. clearance between inner and outer tubes of damper
    • D. coil spring mounting
    • Discuss
    • 8. The auto ignition in a spark ignition engine means

    • Options
    • A. automatic ignition of the charge at the end of compression
    • B. ignition induced by the passage of a spark
    • C. ignition of the charge before the passage of flame front
    • D. ignition induced to supplement the process of normal combustion
    • Discuss
    • 9. During suction stroke, the inside pressure of cylinder is

    • Options
    • A. more than the atmospheric pressure
    • B. less than the atmospheric pressure
    • C. equal to the atmospheric pressure
    • D. none of these
    • Discuss
    • 10. The main characteristics of a maintenance-free (MF) battery is that

    • Options
    • A. a maintenance-free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid
    • B. a maintenance-free battery has a relatively short shelf life when compared with standard batteries
    • C. since it is sealed, the water in a maintenance-free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
    • D. recharging of a maintenance-free battery is neither required nor possible
    • Discuss


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