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

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

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Automobile Engineering in ME
The condition that causes vapour locking in a brake system is

Overheating of the fluid due to frequent brake application
An excessively high engine speed on a downhill road
Keeping the vehicle without use for an extended period
Overcooling of the brakes during high speed driving

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Automobile Engineering in ME
A basic difference between the spark ignition engine and the Diesel engine is that the

All of these
Air temperature ignites the fuel in the Diesel engine
Diesel engine compresses air alone instead of an air-fuel mixture
Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke

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