In order to apply the air brakes on cars attached to a locomotive with the air cut in, you would tell the engineer to set brakes (piston out) or release the brakes (piston in)?

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Prepare for the Canadian National Railroad Exam. Study with flashcards and multiple choice questions, each one offering hints and explanations. Ace your exam!

Multiple Choice

In order to apply the air brakes on cars attached to a locomotive with the air cut in, you would tell the engineer to set brakes (piston out) or release the brakes (piston in)?

Explanation:
Brakes are applied by the brake cylinder pushing the piston outward. When the air system is supplying the train (air cut in), a brake command that applies the train brakes makes the piston extend, pressing the brake shoes against the wheels. Therefore, to apply the air brakes on cars attached to a locomotive, you tell the engineer to set brakes, so the piston moves out. Releasing brakes would retract the piston (piston in) and release the braking force.

Brakes are applied by the brake cylinder pushing the piston outward. When the air system is supplying the train (air cut in), a brake command that applies the train brakes makes the piston extend, pressing the brake shoes against the wheels. Therefore, to apply the air brakes on cars attached to a locomotive, you tell the engineer to set brakes, so the piston moves out. Releasing brakes would retract the piston (piston in) and release the braking force.

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