Automobile Engineering in ME
In a square type engine

Diameter and length of piston are same
Geometrical shape is square
Two cylinders are placed horizontal and two vertical
Stroke length and cylinder bore are same

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Automobile Engineering in ME
The rigid suspension is beneficial when

It is desired to have more flexibility in design
Large changes in load make it necessary to have a large suspension stroke
It is desired to reduce the unsprung mass
It is desired to improve tyre to ground contact characteristics

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Automobile Engineering in ME
A worm gear is used as the pinion for the rack and pinion type of steering gearbox, because it

Reduces the amount of kickback for large steering angles
Allows the steering wheel to be turned by a greater amount when steering
Makes the steering more responsive
Improves steering comfort when steering wheel is turned to effect small changes in the direction of forward motion

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