An administrator has a UPS rated at 200 amps per hour. What is the maximum runtime of this UPS when connected to a server drawing 400 amps per hour?

To determine the maximum runtime of the uninterruptible power supply (UPS) when connected to a server, you need to look at the capacity of the UPS and the load it is supporting. The UPS is rated to provide a total current of 200 amps per hour. If the server draws 400 amps per hour, you can calculate the runtime by understanding how long the UPS can sustain this load.

Since the load on the UPS (400 amps) exceeds its capacity (200 amps), the UPS will only be able to provide power for a limited time before it is drained. The calculation can be seen as follows:

1. Calculate how long the UPS can run at the given load:

• You can divide the total capacity of the UPS by the load: 200 amps (capacity) / 400 amps (load) gives you 0.5 hours.

2. Convert this time into minutes:

• 0.5 hours is equivalent to 30 minutes.

This clearly shows that the UPS can provide power to the server drawing 400 amps for a maximum of 30 minutes before it is depleted. Hence, the correct answer reflects the calculations based on the relationship between the UPS capacity and the server's power consumption.