When a ground ring is used as a grounding electrode, it must be at least a 2 AWG copper conductor at least __________ feet long.
a. 15
b. 20
c. 30
d. 50
b. 20
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_____ formation occurs during the storage period of cuttings
A) Tip B) Callus C) Leaf D) Stem
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Communicating with the customer in technical terms may be the easiest way to communicate.
Answer the following statement true (T) or false (F)
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A device that does not switch on and off motors directly is a:
A) Contactor. B) Motor starter. C) Heavy-duty relay. D) Light-duty relay.
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A 5.2 M? resistor, 1.2 M? resistor and 1 M? resistor are connected in parallel across a 15 V source. What is the total current if the 1.2 M? resistor opens?
A) 2.41 ?A B) 17.9 ?A C) 2.88 ?A D) 12.5 ?A
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