Air Brake Practice Questions 1 – Page 16 – AZ Test Guide

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#1. The air loss rate on a single vehicle (bus, tractor or truck) must not exceed:

21 kPa (3 psi) per minute

41 kPa ( 6 psi) per minute

55 kPa (8 psi) per minute

7 kPa (1 psi) per minute

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