8) A private water utility purchases 10,000,000 kilowatt-hours of electricity per year for pump operations. The unit cost of electricity is currently 10.0 cents per kilowatt-hour. Over the next 30 years, the utility's electrical energy consumption is expected to remain constant while the unit cost of electricity increases at an average rate of 3.0% per year. The utility's minimum attractive rate of return is 6.0%. Find the present value of the next 30 years of electricity purchases in million dollars. a) 1.0 c) 48.3 b) 13.8 d) 19.8
8) A private water utility purchases 10,000,000 kilowatt-hours of electricity per year for pump operations. The unit cost of electricity is currently 10.0 cents per kilowatt-hour. Over the next 30 years, the utility's electrical energy consumption is expected to remain constant while the unit cost of electricity increases at an average rate of 3.0% per year. The utility's minimum attractive rate of return is 6.0%. Find the present value of the next 30 years of electricity purchases in million dollars. a) 1.0 c) 48.3 b) 13.8 d) 19.8
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Answer Question 8: the marked choice is the correct answer.
Transcribed Image Text:7) In the system below, if all pipes are horizontal and have a friction factor of 0.012
and the flow goes from B to D at a rate of 1.5 ft³/s, what is the flow from A to D in
ft³/s?
QARO
a) 1.5
c) 6.5
A
8 cfs
a) 1.0
c) 48.3
A
24 in. 1000 ft
10 in. 1410 ft
B
D
12 T 1000 ft
8 in. 1000 ft
12 in. 1000 ft
b) 3.6
d) 2.3
C 2 cfs
b) 13.8
d) 19.8
10 in. 1000 ft
E
8) A private water utility purchases 10,000,000 kilowatt-hours of electricity per
year for pump operations. The unit cost of electricity is currently 10.0 cents per
kilowatt-hour. Over the next 30 years, the utility's electrical energy consumption is
expected to remain constant while the unit cost of electricity increases at an average
rate of 3.0% per year. The utility's minimum attractive rate of return is 6.0%. Find
the present value of the next 30 years of electricity purchases in million dollars.
6 cfs
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