In industrial applications, alternators are driven by various types of ____________________.
Fill in the blank(s) with the appropriate word(s).
prime movers
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The annual average insolation (energy of sunlight per unit area) striking a fixed solar panel in Buffalo, New York, is 200 W?m?2, while in Phoenix, Arizona, it is 270 W?m?2. In each location, the solar panel converts 15% of the incident energy into electricity. Average annual electricity use in Buffalo is 6000 kW?h at an average cost of $0.15 kW?h, while in Phoenix it is 11,000 kW? h at a cost of $0.09 kW? h.
(a) In each city, what area of solar panel is needed to meet the average electrical needs of a residence? (b) In each city, what is the current average annual cost of electricity? (c) If the solar panel has a lifetime of 20 years, what price per square meter of solar panel can be justified in each location? Assume that future increases in electricity prices offset the cost of borrowing funds for the initial purchase, so that you need not consider the time value of money in this analysis.
What size are the cutouts in the beam?
Refer to the girder brace in Drawing Number W11784S R1.
Why has ISDN received a lukewarm welcome in the United States?
A) costs of end equipment and upgrades B) too few technicians have studied it sufficiently to establish familiarity C) equipment failures D) too complicated E) all of the above are factors
Steel piping material should be secured in a __________ while it is being cut.
A. clamp B. collar C. cuff D. vise