How many amp hours for the APU Battery?

How many amp hours for the APU Battery?

• A. 43 for the APU Battery
• B. 17 for the APU Battery
• C. 28 for the APU Battery
• D. 60 for the APU Battery

Answer: (A)

Amp hours describe how much charge a battery holds and roughly how long it can supply a given current. The APU battery in this context is rated at 43 amp hours, meaning it can deliver 43 amps for one hour, or any lower current for a proportionally longer time before it’s depleted. This capacity is chosen to meet the APU’s start-up and operation power needs while balancing weight and endurance. For example, at a 10 A draw, you’d expect about 4.3 hours of usable time (ignoring losses). The energy in watt-hours would be the amp hours times the system voltage, so at a typical 24 V system it would be about 1,032 Wh. The other options would imply different energy storage and wouldn’t align with the required performance.

Amp hours describe how much charge a battery holds and roughly how long it can supply a given current. The APU battery in this context is rated at 43 amp hours, meaning it can deliver 43 amps for one hour, or any lower current for a proportionally longer time before it’s depleted. This capacity is chosen to meet the APU’s start-up and operation power needs while balancing weight and endurance. For example, at a 10 A draw, you’d expect about 4.3 hours of usable time (ignoring losses). The energy in watt-hours would be the amp hours times the system voltage, so at a typical 24 V system it would be about 1,032 Wh. The other options would imply different energy storage and wouldn’t align with the required performance.