Automobile Engineering in ME
The problems caused by the wheel imbalance are

Poor acceleration and reduced fuel efficiency
Steering wheel vibrations and uneven tyre wear
Hard steering and hard ride
Poor acceleration and hard steering

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

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

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