If an electric furnace were equipped with three 5-kW heating elements, which device would allow them to cycle at different intervals?

A. interlock
B. limit switch
C. room thermostat
D. sequencer


Answer: D

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(2a - 8d -5m) + (a + 5d +5m) = ____

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Dogs serve people and society as

A. Guide dogs B. Detectors of narcotics C. Search and rescue dogs D. All of the above E. A and C above

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All these are causes of catalytic converter failure EXCEPT ________

A) Excessive temperature B) Incorrect air/fuel mixture C) Contamination D) All of these are causes of converter failure

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Light quality is described by its duration

Indicate whether the statement is true or false

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