The parking brakes employed in vehicles are operated

mechanically

hydraulically

pneumatically

none of these

front wheels

rear wheels

front and rear wheels

propeller shaft

ensure that equal pressure is supplied to the front and rear brakes throughout every braking operation

reduce the brake fluid pressure when the brakes approach their lockup point

cause less brake fluid pressure to act on the front brakes than on the rear brakes when the fluid pressure exceeds a predetermined level

cause less brake fluid pressure to act on the rear brakes than on the front brakes when the fluid pressure exceeds a predetermined level

overheating of the fluid due to frequent brake application

over-cooling 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

brakes function more effectively

brakes fail completely

brake operation is delayed after depression of the brake pedal

vapour locking has no effect on brake performance