Automobile Engineering – Set 03

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Q1. The stroke of an engine is the

(A) Volume of the cylinder
(B) Length of the connecting rod
(C) Internal diameter of the cylinder
(D) Distance between T.D.C. and B.D.C.

Q2. 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

(A) 400 cm³
(B) 600 cm³
(C) 1200 cm³
(D) 2400 cm³

(A) R
(B) 2R
(C) 4R
(D) 4R²

(A) 85-95
(B) 95-100
(C) 100-110
(D) 110-125

(A) 0.2 mm
(B) 0.5 mm
(C) 1 mm
(D) 1.5 mm

(A) 0.1
(B) 0.4
(C) 0.8
(D) 1.2

Q8. 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

(A) 8.091 Nm
(B) 80.91 Nm
(C) 809.1 Nm
(D) 8091 Nm

Q10. The calorific value of petrol is about

(A) 36.5-38.5 MJ/kg
(B) 39.4-42.5 MJ/kg
(C) 42.7-43.5 MJ/kg
(D) 45.5-47 MJ/kg

Q11. 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

Q12. Highest useful compression ratio (HUCR) is the highest compression ratio at which the

(A) Engine can run
(B) Engine gives maximum output
(C) Engine is most efficient
(D) Fuel can be used in a test engine without knocking

Q13. The painting of automobiles is done to

(A) Prevent rust from growing on the body
(B) Improve its external appearance
(C) Retain the characteristics of steel for long
(D) All of these

Q14. When the brake pedal free play is less than the specified value, then the

(A) Brake drags
(C) Vapour locking occurs in the brake lines
(D) Antilock braking system malfunctions

Q15. The acid used in automobile battery is

(A) Hydrochloric acid
(B) Hydrofluoric acid
(C) Nitric acid
(D) Sulphuric acid

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