Why is 24V used in control circuits?

a. Components are easy to install.
b. Alternating current is not needed.
c. It allows battery back-up.
d. Electric shocks are eliminated.


a

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General purpose processors typically have control lines with which to select system devices

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A bus that will terminate the bus cycle unless a signal indicates that it should insert wait states is ________

A) asynchronous B) quasi-synchronous C) semi-synchronous D) synchronous

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_____ of dry biomass such as forest products, agricultural residue, and municipal solid waste can generate heat and electricity in much the same manner as conventional coal-fired power plants.

A. Biological conversion B. Direct combustion C. ?Thermal conversion D. ?Chemical conversion

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