What is the Backup Pump driven by?

What is the Backup Pump driven by?

• A. An electric motor
• B. A hydraulic motor
• C. An internal combustion engine
• D. A pneumatic motor

Answer: (A)

The backup pump is driven by an electric motor. This allows hydraulic pressure to be produced even if the engine-driven hydraulic pumps aren’t available, by drawing power from the aircraft’s electrical system. An electric drive provides a reliable, independent source of hydraulic power for essential flight controls when the primary hydraulic system can’t supply pressure. Using a hydraulic, internal combustion, or pneumatic drive would create dependencies on other systems or power sources that might be unavailable in a failure scenario, so electric driving is the appropriate design choice for a backup pump.

The backup pump is driven by an electric motor. This allows hydraulic pressure to be produced even if the engine-driven hydraulic pumps aren’t available, by drawing power from the aircraft’s electrical system. An electric drive provides a reliable, independent source of hydraulic power for essential flight controls when the primary hydraulic system can’t supply pressure. Using a hydraulic, internal combustion, or pneumatic drive would create dependencies on other systems or power sources that might be unavailable in a failure scenario, so electric driving is the appropriate design choice for a backup pump.