NOCTI Automotive Technology 2

Question 1

What type of system uses hydraulic pressure transmitted through brake fluid to actuate wheel brakes?

Accepted Answer

Hydraulic brake system

Answer

Automotive hydraulic brake systems use incompressible brake fluid to transmit force from the master cylinder to the wheel cylinders or calipers.

Question 2

What is the purpose of the ABS (Anti-lock Braking System) in a vehicle?

Accepted Answer

Prevent wheel lockup during hard braking to maintain steering control

Answer

ABS rapidly modulates brake pressure to prevent the wheels from locking, allowing the driver to maintain steering control during emergency stops.

Question 3

A vehicle pulls consistently to one side during normal braking. Which component is the MOST likely cause?

Accepted Answer

Seized or sticking brake caliper on the pulling side

Answer

A seized or dragging caliper applies uneven braking force, causing the vehicle to pull toward the side with more brake clamping force.

Question 4

Which suspension component directly connects the wheel hub/steering knuckle to the vehicle frame and controls wheel travel?

Accepted Answer

Control arm

Answer

The control arm links the steering knuckle to the vehicle frame, allowing controlled up-and-down wheel movement while maintaining proper alignment geometry.

Question 5

What causes brake fade in a heavily used drum brake system?

Accepted Answer

Heat buildup reducing friction between shoes and drum

Answer

Brake fade occurs when excessive heat from repeated braking reduces the coefficient of friction between the brake shoes and drum, decreasing stopping power.

NOCTI - National Occupational Competency Testing Institute Practice Test

NOCTI - National Occupational Competency Testing Institute Practice Test

NOCTI Automotive Technology 2