Automobile Engineering - Set 04

Practice Test: Question Set - 04


1. The petrol engines are also known as
    (A) Spark ignition (S.I.) engines
    (B) Compression ignition (C.I.) engines
    (C) Steam engines
    (D) None of these

2. The difference between DOT 3 and DOT 4 brake fluids is
    (A) DOT 4 fluids have a higher boiling point than DOT 3 fluid
    (B) DOT 4 fluids have a lower boiling point than DOT 3 fluid
    (C) DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
    (D) DOT 4 fluid is more resistant to freezing than DOT 3 fluid

3. The problems caused by the wheel imbalance are
    (A) Hard steering and hard ride
    (B) Poor acceleration and hard steering
    (C) Steering wheel vibrations and uneven tyre wear
    (D) Poor acceleration and reduced fuel efficiency

4. The formula for Iso-octane is
    (A) C8H18
    (B) C7H17
    (C) C6H18
    (D) C7H18

5. The torque converter uses ________ to transfer torque.
    (A) Air
    (B) Automatic transmission fluid (ATF)
    (C) Gears
    (D) Steel belt

6. The composition of the electrolyte in a fully charged battery is that
    (A) The electrolyte is pure distilled water
    (B) The electrolyte is pure sulphuric acid
    (C) The electrolyte is a mixture of 64% distilled water and 36% sulphuric acid by weight
    (D) The electrolyte is a mixture of 90% distilled water and 10% sulphuric acid by weight

7. The petrol engine works on
    (A) Otto cycle
    (B) Carnot cycle
    (C) Diesel cycle
    (D) Rankine cycle

8. The maximum torque multiplication ratio in a torque converter is about
    (A) 2.5
    (B) 10
    (C) 25
    (D) 40

9. The cetane rating of Diesel fuel is in the order of
    (A) 25
    (B) 45
    (C) 70
    (D) 90

10. A traction control system (TCS) in automobiles controls the
    (A) Vibrations on the steering wheel
    (B) Engine power during acceleration
    (C) Torque that is transmitted by the tyres to the road surface
    (D) Stopping distance in case of emergency

11. The compression ratio of a petrol engine is nearly
    (A) 4:1
    (B) 8:1
    (C) 15:1
    (D) 20:1

12. The starter motor is driven by
    (A) Chain drive
    (B) Gear drive
    (C) Flat belt drive
    (D) V-belt drive

13. In radial tyres
    (A) One ply layer runs diagonally one way and another layer runs diagonally the other way
    (B) All plies run parallel to one another and vertical to tyre bead
    (C) Inner tubes are always used
    (D) None of these

14. The rigid suspension is beneficial when
    (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

15. The component in the radiator of an automobile that increases the boiling point of water is
    (A) Drain plug
    (B) Water jacket
    (C) Vacuum valve
    (D) Pressure cap

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Automobile Engineering:
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