Power cost is P2 per kWh. If money is worth 20%, how many hours per year would the motors have to be operated at full load for them to be equally economical? If the expected number of hours of operation per year exceeds the break-even point, which motor is more economical?

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Data for two 50-hp motors are as follows:
Alpha motor
Beta motor
Original cost
P37 500
P48 000
Annual maintenance
1500
750
Life, years
Efficiency
10
10
87%
92 %
Taxes and insurance
3%
3%
Power cost is P2 per kWh. If money is worth 20%,
how many hours per year would the motors have
to be operated at full load for them to be equally
economical? If the expected number of hours of
operation per year exceeds the break-even point,
which motor is more economical?
Transcribed Image Text:Data for two 50-hp motors are as follows: Alpha motor Beta motor Original cost P37 500 P48 000 Annual maintenance 1500 750 Life, years Efficiency 10 10 87% 92 % Taxes and insurance 3% 3% Power cost is P2 per kWh. If money is worth 20%, how many hours per year would the motors have to be operated at full load for them to be equally economical? If the expected number of hours of operation per year exceeds the break-even point, which motor is more economical?
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