Automobile Engineering in ME
The compression ratio in petrol engine is kept less than in Diesel engine because

Higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition
It is just customary to have less compression ratio in petrol engines
Less compression ratio gives better performance
It makes petrol engines lighter

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Automobile Engineering in ME
Incorrect steering axis inclination (S.A.I.) causes

Tendency to assume toe-out orientation
Generation of a braking effect at tight corners
Poor recovery of the steering wheel after making a turn
The vehicle to pull to the side of lesser inclination

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Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Can deal with movement of the suspension both vertically and in other directions
Improve the force transmission speed
Reduce the amount of noise generated
Reduce the amount of sliding resistance

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Automobile Engineering in ME
The lubrication oil flow in an engine is in the order as

Oil strainer, oil pump, relief valve, oil filter, cylinder head, cylinder block and oil pan
Oil strainer, oil filter, relief valve, oil pump, cylinder block, cylinder head and oil pan
Oil pump, oil strainer, relief valve, oil filter, cylinder block, cylinder head and oil pan
Oil strainer, oil pump, relief valve, oil filter, cylinder block, cylinder head and oil pan

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