How many pumps does the A hydraulic system use and what are their power sources?

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Multiple Choice

How many pumps does the A hydraulic system use and what are their power sources?

Explanation:
Two hydraulic pumps are used in the A system: one engine-driven and one electrically driven. The engine-driven pump runs whenever its engine is operating, providing primary hydraulic pressure during flight. The electrically driven pump can be energized from the aircraft’s electrical system to supply pressure when engines aren’t running or when extra or backup pressure is needed. This arrangement gives continuous hydraulic capability and a backup in case the engine-driven pump fails.

Two hydraulic pumps are used in the A system: one engine-driven and one electrically driven. The engine-driven pump runs whenever its engine is operating, providing primary hydraulic pressure during flight. The electrically driven pump can be energized from the aircraft’s electrical system to supply pressure when engines aren’t running or when extra or backup pressure is needed. This arrangement gives continuous hydraulic capability and a backup in case the engine-driven pump fails.

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