Chimney brackets are sold _____ size.

A. in pairs in a 24" or 35"
B. in pairs in a 25" or 36"
C. singly in 26" or 34"
D. singly in 36" or 48"


Answer: B

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What results from increasing rocker ratio?

A. Decrease in output travel at the pallet end of the rocker arm. B. Decrease in mechanical advantage. C. Increase the amount of pushrod travel. D. Increase the output travel at the pallet end of the rocker arm.

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If bc=3 and ac=5, what is ab?

Fill in the blank(s) with the appropriate word(s).

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As the frequency in a PWM drive increases, the number of pulses it produces per alternation __________.

A. increases B. decreases

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