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

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

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

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