SECTION-2

 


AUTOMOBILE ENGINEERING OBJECTIVE/ MULTIPLE CHOICE QUESTIONS 

 


Most Most Important Automobile Engineering MCQ  PDF Download


Q56. The side force sustained by the wheel during cornering divided by the slip angle is called

(a) cornering force                  (b) camber force
(c) cornering power                (d) none of the above

 

Ans. (c) cornering power

 


Q57. The steering ratio for manual steering of cars is approximately

(a) 5                                        (b) 15
(c) 50                                      (d) 100

 

Ans. (b) 15

 


Q58. On car having rack and pinion steering, the gear rack is attached to

(a) relay rod                            (b) pitman axis
(c) cross shaft                         (d) tie rod

 

Ans. (d) tie rod

 


Q59. Heel and toe wear in tyres is caused by

(a) excessive acceleration and braking

(b) overinflation

(c)  underinflation

(d) excessive camber

 

Ans. (a) excessive acceleration and braking

Heel and toe wear refers to the partial wear of individual tread blocks, appearing as sawtooth wear, but in the direction of tyre rotation instead of across the tread. This wear pattern is most common on non-drive wheels, e.g. the rear wheels of a four-wheel drive vehicle and can be corrected by more frequent tyre rotation.

 


Q60. Tread distortion is least on

(a) radial ply tyres                   (b) cross ply tyres
(c) cross ply belted tyres         (d) none of these

Ans. (a) radial ply tyres
Here the cords extend between the two steel wire beads at an angle of 90° to the centerline of the tyre. The tyre is provided with two or more layers of inflexible belts under the tread. The material for thread varies from synthetic material like rayon or nylon to fibre glass and even steel wires. This gives better strength to the tread area and flexibility to the side wall. Radial tyres offer better anti skid property and provide stable ride to the occupants of the automobile. Also while cornering, the radial tyres provide better stability as compared to bias ply tyres. There is no loss of contact between the tyre tread and road surface in case of radial tyre whereas the contact between the tread and road surface is lost in case of bias ply type tyre.
Tread distortion is least on

 


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Automobile Engineering- Section-1

 

 Automobile Engineering- Section-2

 

Automobile Engineering- Section-3

 

Automobile Engineering- Section-4

 

Automobile Engineering- Section-5

 

Automobile Engineering- Section-6

 


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Tread distorsionseo score


                            

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