List 3 of the 4 potential fuel sources for a hot water heating system.
What will be an ideal response?
Oil, natural gas, LP gas, and electricity.
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The Class B system, for initiating devices, connects through a two-wire circuit and _________.
A. Does not use an end of line device B. Uses an end of line device C. Is an outdated system no longer used in the United States D. Uses a series limiting resistor
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What is the maximum run for a #14 wire carrying 10 amps based on a voltage drop of 3% at 120 V?
A) 137 feet B) 69 feet C) 45 feet D) 109 feet
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The energy used to run ten 75 W light bulbs for 12 hours is
A) 12 kWh B) 750 kWh C) 9,000 kWh D) 9 kWh
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Which nervous system controls body organs or functions based on voluntary and conscious impulse?
A. central B. autonomic C. somatic D. automatic
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