____ is the force that pushes the electrons through a wire.
a. Resistance
b. Voltage
c. Inductance
d. Amperage
b. Voltage
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A current imbalance as low as 4 milliamps may be detected by a(n) _____.
a. GFCI sensor b. mechanical sensor c. AFCI sensor d. fiber-optic sensor
The distance from the top of the finished lower floor to the top of the finished upper floor is called the stairway's _____.
a. vertical dimension b. total rise c. full flight measurement d. total run
When a B/C analysis is conducted, the benefits and costs: (choose one)
(a) Must be expressed in terms of their present worth values (b) Must be expressed in terms of their annual worth values (c) Must be expressed in terms of their future worth values (d) Can be expressed in terms of PW, AW, or FW
Why is electricity distributed using extremely high voltages?
A) To keep current as low as possible and reduce loss through the lines. B) Higher voltages are easier to generate than lower voltages, so distributing them as a high voltage reduces equipment and saves money. C) High-voltage electricity travels faster than lower-voltage electricity and can get from one side of the country to the other in seconds. D) For safety because the insulation on the electrical distribution lines is not as effective at lower voltages.