Automobile Engineering - Set 06 - ObjectiveBooks

Automobile Engineering - Set 06

Practice Test: Question Set - 06

1. In Diesel engines, the duration between the time of injection and the time of ignition is called
    (A) Spill cut-off
    (B) Delay period
    (C) Injection period
    (D) Ignition period

2. In bias ply tyres
    (A) All plies run parallel to one another
    (B) Belts of steel mesh are used in the tyres
    (C) One ply layer runs diagonally one way and another layer runs diagonally the other way
    (D) All of the above

3. The aluminium alloy is used in cylinder blocks because
    (A) It is lighter and has good heat dissipation characteristics
    (B) Material cost is low
    (C) It does not require any cylinder liners
    (D) The piston is also made of aluminium alloy

4. The main function of the tread pattern on tyre is that
    (A) The tread grooves pass air between the tyre and road surface, thereby preventing tyre from overheating
    (B) The crests between the tread grooves absorb road noise
    (C) In wet conditions, the tread grooves expel water that is drawn between the tyre and road surface
    (D) The tread pattern protects the tyre's inner carcass from small stones and pieces of glass

5. The most commonly used supplementary restraint system (SRS) component is
    (A) Seat belt
    (B) Brake
    (C) Airbag
    (D) Steering

6. The major purpose of an electronically controlled automatic transmission is that this type of transmission
    (A) Eliminates gear clutches
    (B) Eliminates the gear shaft lever
    (C) Reduces the number of automatic transmission components
    (D) Reduces shift shock and achieves more efficient transmission of engine torque

7. The antiknock property of compression ignition engine fuel can be improved by adding
    (A) Tetraethyl lead
    (B) Trimethyl pentane
    (C) Amyl nitrate
    (D) Hexadecane

8. A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it
    (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 kickback for large steering angles

9. If the spark plug deposit indicates black coating of soot, it indicates that the engine has been generally operating on
    (A) Too lean mixture
    (B) Stoichiometric mixture
    (C) Most economical mixture
    (D) Too rich mixture

10. The crescent shaped cavity on the piston head top surface is called as
    (A) Piston oil hole
    (B) Snap ring
    (C) Valve recess
    (D) Valve clearance

11. The characteristic that is enhanced by the use of cylinder sleeves is
    (A) Cooling efficiency
    (B) Resistance to wear
    (C) Lubrication performance
    (D) None of these

12. The connecting rod connects the piston and the
    (A) Cylinder head
    (B) Cylinder block
    (C) Camshaft
    (D) Crankshaft

13. The three basic cylinder arrangements for automotive engines are
    (A) Flat, radial, and V
    (B) In a row, in line, and opposed
    (C) In line, V, and opposed
    (D) V, double row, and opposed

14. The main function of the brake fluid is
    (A) Lubrication
    (B) Power transmission
    (C) Cooling
    (D) None of these

15. Which part of the automobile tyre is subjected to greatest flexing action?
    (A) Bead
    (B) Side wall
    (C) Shoulder
    (D) Tread

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