Manual starters for DC motors are rare because ____________________ are much more efficient and practical.
Fill in the blank(s) with the appropriate word(s).
electronic controls
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The signal sequence xi with duration nx = 4 and values (-1, 1, -1, 1) has power spectrum Sxk. The k=0 value equals Sx0=______
Fill in the blank(s) with the appropriate word(s).
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El triángulo de potencia muestra que la potencia _____ es mayor que la potencia_______.
a. reactiva; aparente b. verdadera; aparente c. aparente; verdadera d. reactiva; verdadera
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Tempering makes the steel harder
Indicate whether the statement is true or false
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Graywater heat exchangers should be installed on drainage pipes that run in which orientation??
A. ?horizontal only B. ?vertical only C. ?diagonal D. ?either horizontal or vertical
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