The power generated by photovoltaic cells in an array ________________
A. is alternating current and can be directly used by the power company
B. is direct current power
C. can be increased by having the array track the movement of the sun
D. both B and C
D
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Dual tires should:
A. Always come into contact with one another. B. Come into contact with one another fairly regularly. C. Not come into contact with one another.
PROBLEM 3.66
Determine the maximum shearing stress in a solid shaft of 1.4-in. diameter as it transmits 66 hp at a speed of (a) 750 rpm, (b) 1500 rpm.
Seasonal patterns of livestock numbers tend to repeat themselves year after year; for
example, many calves are weaned late in summer and placed into backgrounding or feedlot programs in the fall months. A. True B. False
For the logic circuit in Figure P13.35, write the logical expression for the outputs of this circuit in terms of its inputs, and create a truth table for the outputs in terms of the inputs, including any required intermediate variables.
