Automobile Engineering - Set 02 - ObjectiveBooks

Automobile Engineering - Set 02

Practice Test: Question Set - 02

1. The brake warning light warns the driver of
    (A) Water in the master cylinder
    (B) Air in the hydraulic system
    (C) Failure of the primary or secondary circuit of hydraulic system
    (D) Power brake failure

2. The connecting rods are generally made of __________ shaped cross-section.
    (A) I
    (B) C
    (C) L
    (D) H

3. It is necessary to maintain the valve clearances as they
    (A) Reduce the resistance to sliding that occurs between the cam and the tappet
    (B) Allow for lengthening of the valves owing to the heat of combustion
    (C) Increase the speed at which the valves move up and down
    (D) Make the crankshaft turn smoothly

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

5. If the air-fuel mixture ignites before the spark takes place at spark plug, the condition is called
    (A) Detonation
    (B) Ignition
    (C) Pre-ignition
    (D) Rumble

6. The instrument used to check specific gravity of acid in a battery is
    (A) Hydrometer
    (B) Hygrometer
    (C) Anemometer
    (D) Multimeter

7. The crankshaft of a typical inline four cylinder engine has ________ balance weights.
    (A) 12
    (B) 4
    (C) 16
    (D) 8

8. The condition that results in large quantities of HC emission is
    (A) High temperature combustion
    (B) Incomplete combustion
    (C) Low temperature combustion
    (D) High atmospheric temperature combustion

9. The engine oil viscosity is defined by ___________ ratings.
    (A) Automatic transmission fluid (ATF)
    (B) Society of automotive engineers (SAE)
    (C) Gross vehicle weight (GVW)
    (D) American petroleum institute (API)

10. The negative plates of a lead acid battery has
    (A) Lead peroxide (PbO₂)
    (B) Spongy lead (Pb)
    (C) Lead sulphate (PbSO₄)
    (D) Sulphuric acid (H₂SO₄)

11. The drive-shafts are connected to the differential and wheel hubs through universal joints because the universal joints
    (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

12. The octane rating of petrol commercially available is
    (A) 85-95
    (B) 95-100
    (C) 100-110
    (D) 110-125

13. The vehicle ride will be comfortable if
    (A) Unsprung mass is kept minimum
    (B) Sprang mass is kept minimum
    (C) Vehicle mass is kept minimum
    (D) All of these

14. The auto ignition in a spark ignition engine means
    (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

15. When the brake pedal free play is less than the specified value, then the
    (A) Brake drags
    (B) Brake fades
    (C) Vapour locking occurs in the brake lines
    (D) Antilock braking system malfunctions

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