Question

In the air brake, air pressure is supplied by
A) Engine manifold
B) A compressor
C) The diaphragm valve
D) Pump

Answer 1

Hint: An air compressor produces air for the brake system. Powered by the vehicle’s engine, the air compressor draws in air at normal pressure and forces it into a much smaller space, causing the pressure of the air to increase. This compressed air is a form of stored energy.

Complete answer:
> An air compressor is a device that converts power (using an electric motor, diesel or gasoline engine etc.) into potential energy stored in pressurized air.
> Air brakes are used in large heavy vehicles, particularly those having multiple trailers which must be linked into the brake system. Such as trucks, buses, trailers and semi-trailers in addition to their use in soil road trains.

Additional Information:
> Air brakes are typically used in heavy trucks and buses, the system consists of service breakers, parking breakers, a control pedal, and an air storage tank for the parking brake, there is a disc or drum arrangement which is designed to be held in the “applied” position by spring pressure.
> Air pressure must be produced to release these “spring brake” parking brakes for the service brakes, the one used while driving for slowing or stopping to be applied, the brake pedal is pushed, routing the air under pressure to the brake chamber, causing the brake to be engaged.
> A Compressed air brake system is divided into a supply and a control system.

So, the correct answer is “Option B”.

Note: Air brakes are typically used on heavy track and buses The system consists of services, brake parking brakes, a control pedal, and an air storage take for the parking brake, there is a disc storage arrangement which is designed to be held in the applied position by spring pressure.