Air Brake (Q Endorsement) Practice · Question
The main advantage of air brakes over hydraulic brakes is:
Air is free and unlimited; if a leak develops, spring brakes apply automatically (fail-safe) — ideal for heavy vehicles.
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Question: The main advantage of air brakes over hydraulic brakes is:
Answer options:
- They are silent ✅ They use compressed air which is unlimited and well-suited to heavy vehicles, with built-in fail-safe spring brakes
- They are cheaper
- They never need maintenance
Correct answer: They use compressed air which is unlimited and well-suited to heavy vehicles, with built-in fail-safe spring brakes
Explanation: Air is free and unlimited; if a leak develops, spring brakes apply automatically (fail-safe) — ideal for heavy vehicles.
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