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

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

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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
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

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