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26 Oct 2023, 01:30
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
44% (03:04) correct
56%
(03:35)
wrong
based on 54
sessions
History
Date
Time
Result
Not Attempted Yet
A moto draws 15 kw (kilowatts) of power while it is running. During the 12-hour day shift, the motor kicks on four-time per hour and runs for 4 minutes every cycle. The motor runs at 85% efficiency (transmit 85% of the power into the equipment) during workday, with the remaining power being lost to heat and friction. During the 12-hour night shift, the motor switches to an operating scheme that runs 3 times per hour for 6 minutes every time. The night time efficiency is 74%. The power company rates are $0.14 per kw hours during the day and $0.11 per kw during the night. What is the total amount of money spent per day on wasted power (heat plus friction)?
A. $2.16
B. $2.36
C. $2.56
D. $2.76
E. $2.96
A. $2.16
B. $2.36
C. $2.56
D. $2.76
E. $2.96
26 Oct 2023, 06:21
Kudos
Bookmarks
Bunuel
OA IS C
We can solve using below method
Posted from my mobile device
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