Gold is ____.
A. a poor conductor of electricity
B. extremely malleable
C. corrosion resistant
D. both b and c
E. all of the above
Answer: D
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Cable is strung from a wind turbine to a distribution panel. The cable has 14 spans of 24 feet? between poles. 11 feet of cable takes power from the turbine to the first pole and 13 feet of cable takes the power from last pole to the distribution panel. What is the length of cable need for this system?
Fill in the blank(s) with the appropriate word(s).
Rule 2 for calculating rise-to-run ratio is stated as _____.
a. Tread width + riser height = 17" to 18" b. Tread width + (2 × riser height) = 24" to 25" c. Tread width + (3 × riser height) = 34" to 35" d. Tread width × riser height = 70" to 75"
Briefly describe the types of loads that a contactor can control.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. A transformer doesn’t “change” the voltage from AC to DC: it just changes the amplitude, or amount. 2. Half-wave rectifiers are rarely used in commercial applications because they waste power in the form of a lost alternation. 3. It’s very uncommon for manufacturers to construct the four diodes of a bridge rectifier package within a single package. 4. If one internal device burns out, you have to replace the entire integrated circuit 5. For commercial applications, most printed circuit boards are manufactured strictly using surface mount technology, not through-hole technology.