Answer :
Final answer:
The appropriate operating pressure range for air brake systems is 90 psi to 120 psi (Option B), ensuring effective engagement of the brakes and vehicle safety.
Explanation:
The operating pressure range for air brake systems is critical for the safe operation of vehicles equipped with these types of brakes, such as commercial trucks and buses. The correct range ensures that the brakes are neither too weak nor excessively forceful, which could either fail to stop the vehicle or cause the brakes to lock up, respectively.
The correct operating pressure range for air brake systems is B) 90 psi to 120 psi. This range provides the necessary force to effectively engage the brake mechanisms without causing undue stress on the system, thereby ensuring safety and reliability when the brakes are applied.
