Chassis units and components practice exam 2

Which of the following is a form of steering mechanism?

• Ackermann steering

• Peg and Ball

• Crown wheel and pinion

• Rack and pinion

To satisfy the MOT regulations the minimum braking efficiency for the footbrake must not be:

• less than 16%

• less than 25%

• less than 50%

• less than 75%

In relation to checking and adjusting the front wheel alignment which of the following is NOT true?

• Adjustments must be made equally to both track rods

• You should remove any very heavy loads from the boot

• You should check the tyre pressures are correct

• Buckled wheels will not affect the wheel alignment

An offside brake caliper piston seized in the off position may cause the:

• vehicle to pull to the right when accelerating

• vehicle to pull to the right when braking

• vehicle to pull to the left when accelerating

• vehicle to pull to the left when braking

In relation to vehicle behaviour during cornering 'oversteer' is when the:

• slip angles of the rear tyres are smaller than the slip angles of the front tyres

• slip angles of the rear tyres are larger than the slip angles of the front tyres

• slip angles of the front tyres are the same as the slip angles of the rear tyres

• rear wheels of a vehicle are carrying much less load than the front wheels

A driver complains of steering wheel 'shimmy' that gets worse as the vehicle's speed increases. This most likely indicates the:

• tyre pressures are too high

• front wheels need balancing

• wheel alignment needs adjusting

• shock absorbers need replacing

The Ackermann steering layout produces:

• toe-out of the front wheels during cornering

• understeer of the front wheels during cornering

• oversteer of the front wheels during cornering

• centre point steering on the front wheels

A customer complains that their vehicle pulls to the left during braking. One possible cause of this fault is:

• the front wheel alignment is incorrectly set with excessive toe-in

• the brake servo has failed due to a collapsed induction manifold pipe

• seized front brake caliper pistons on the offside of the vehicle

• seized front brake caliper pistons on the nearside of the vehicle

The legal limit for a car tyre tread depth is:

• 1 mm across 75% of the tyre width

• 1 mm across 100% of the tyre width

• 1.6 mm across 75% of the tyre width

• 1.6 mm across 100% of the tyre width

A vertical movement of the body at the front then the back in turn is called:

• roll

• bounce

• pitch

• sway