Backup Hydraulic Pump is driven by what?

Backup Hydraulic Pump is driven by what?

• A. Electrical motor
• B. Engine-driven pump
• C. Manual hand pump
• D. Pneumatic motor

Answer: (A)

The idea here is that the backup hydraulic pump provides a secondary source of hydraulic pressure that is independent of the engine-driven pumps. It is powered by an electric motor, using the aircraft’s electrical system, so it can operate even if the engines or their hydraulic pumps aren’t available. That electric drive makes it reliable for maintaining critical control capability when needed, without relying on engine power. It isn’t a manual hand pump, and it isn’t a pneumatic motor, nor is it driven by the engine like the primary pumps, which is why electric drive is the correct choice.

The idea here is that the backup hydraulic pump provides a secondary source of hydraulic pressure that is independent of the engine-driven pumps. It is powered by an electric motor, using the aircraft’s electrical system, so it can operate even if the engines or their hydraulic pumps aren’t available.

That electric drive makes it reliable for maintaining critical control capability when needed, without relying on engine power. It isn’t a manual hand pump, and it isn’t a pneumatic motor, nor is it driven by the engine like the primary pumps, which is why electric drive is the correct choice.