If the B hydraulic system is lost, is there a backup for the brakes?

If the B hydraulic system is lost, is there a backup for the brakes?

• A. No backup exists.
• B. Yes, there is 1 backup.
• C. Yes, there are 2 backups for the brakes.
• D. The brakes can be powered by the A system.

Answer: (C)

Brakes are designed with redundancy so you can still stop even if one hydraulic system fails. If the B system is lost, there are two independent backups for braking power. First, the A hydraulic system can continue to power the brakes. Second, there is another separate backup source for hydraulic pressure dedicated to the brakes (such as an alternate pump or an accumulator) that can provide braking independently of the B system. So even with B out, you still have two separate ways to supply braking force, which is why the best answer states there are two backups for the brakes.

Brakes are designed with redundancy so you can still stop even if one hydraulic system fails. If the B system is lost, there are two independent backups for braking power. First, the A hydraulic system can continue to power the brakes. Second, there is another separate backup source for hydraulic pressure dedicated to the brakes (such as an alternate pump or an accumulator) that can provide braking independently of the B system. So even with B out, you still have two separate ways to supply braking force, which is why the best answer states there are two backups for the brakes.