Which of the following opposes any change in circuit current?
a. Capacitance
b. Reactance
c. Inductance
d. Impedance
c
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Figure 8-1
The accompanying figure shows the addition of a(n) ____________________ button to the circuit.
Fill in the blank(s) with the appropriate word(s).
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Each lighting fixture is identified by a number.
Answer the following statement true (T) or false (F)
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A chopper circuit is used to ____.
A. change AC to DC B. change DC to AC C. change pulsating DC into steady DC D. change steady DC into pulsating DC
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It is estimated that heating and cooling equipment use up to ________ of total energy consumption
A) 30% B) 50% C) 40% D) 60%
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