When you push the brake pedal down, you are:

Letting air flow into the brake chambers.. Section 5.1: Pushing the pedal allows compressed air to flow into the brake chambers, pushing

When you push the brake pedal down, you are:

ANSWER BREAKDOWN
  • A. Incorrect. "Releasing air from the system." is not correct. Pushing the pedal allows compressed air to flow into the brake chambers, pushing the rod out to apply the brakes.
  • B. Correct. Pushing the pedal allows compressed air to flow into the brake chambers, pushing the rod out to apply the brakes.
  • C. Incorrect. "Engaging the spring brakes." is not correct. Pushing the pedal allows compressed air to flow into the brake chambers, pushing the rod out to apply the brakes.
  • D. Incorrect. "Turning on the compressor." is not correct. Pushing the pedal allows compressed air to flow into the brake chambers, pushing the rod out to apply the brakes.