Automobile Engineering in ME
The main function of intake manifold is that it

Reduces intake noise
Distributes intake air equally to the cylinders
Promotes the mixture of air and fuel
Cools the intake air to a suitable temperature

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

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

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