Automobile Engineering in ME
In a square type engine

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

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Automobile Engineering in ME
It is necessary to maintain the valve clearances as they

Increase the speed at which the valves move up and down
Make the crankshaft turn smoothly
Reduce the resistance to sliding that occurs between the cam and the tappet
Allow for lengthening of the valves owing to the heat of combustion

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Automobile Engineering in ME
The major purpose of an electronically controlled automatic transmission is that this type of transmission

Reduces shift shock and achieves more efficient transmission of engine torque
Reduces the number of automatic transmission components
Eliminates gear clutches
Eliminates the gear shaft lever

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Automobile Engineering in ME
The auto ignition in a spark ignition engine means

Ignition induced by the passage of a spark
Automatic ignition of the charge at the end of compression
Ignition of the charge before the passage of flame front
Ignition induced to supplement the process of normal combustion

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Automobile Engineering in ME
The function of a proportioning control valve (PCV) in a brake system is to

Cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level
Cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level
Reduce the brake fluid pressure when the brakes approach their lockup point
Ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation

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