You have been asked what the estimated power cost will be per month (30 days) for the new equipment room you are designing. The power load you have calculated to be an average of 1850 watts per…

The correct answer is C. $99.90. Convert watts to kilowatts: 1850W ÷ 1000 = 1.85 kW. Calculate total hours in 30 days: 30 days × 24 hours = 720 hours. Calculate total energy consumed: 1.85 kW × 720 hours = 1,332 kWh. Multiply by cost rate: 1,332 kWh × $0.075 = $99.90. The key steps are unit conversion (W to…

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Question

You have been asked what the estimated power cost will be per month (30 days) for the new equipment room you are designing. The power load you have calculated to be an average of 1850 watts per hour. What is the monthly cost assuming the cost of electricity is 7.5 cents (U.S.) per kilowatt hour?

Options

A$44.40
B$55.50
C$99.90
D$122.80
E$140.10

How the community answered

(44 responses)

A
5% (2)
B
2% (1)
C
82% (36)
D
2% (1)
E
9% (4)

Explanation

Convert watts to kilowatts: 1850W ÷ 1000 = 1.85 kW. Calculate total hours in 30 days: 30 days × 24 hours = 720 hours. Calculate total energy consumed: 1.85 kW × 720 hours = 1,332 kWh. Multiply by cost rate: 1,332 kWh × $0.075 = $99.90. The key steps are unit conversion (W to kW), finding total run-hours for the period, and applying the per-kWh rate.

Topics

#power cost#kilowatt hour#energy calculation#equipment room

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