Excited-field electromagnet alternators have a ____, which, energized with DC, becomes a powerful magnet.
a. rotating coil
b. permanent magnet
c. converter
d. field coil
d. field coil
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All of the following are examples of noneconomic factors except:
(a) Availability of resources (b) Goodwill (c) Customer acceptance (d ) Profit
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One type of luminaire is indirect.
Answer the following statement true (T) or false (F)
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Which is of better quality for plant growth, topsoil or subsoil? Why?
What will be an ideal response?
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The correct shut off procedure for an oxyacetylene torch is:
A) Close the acetylene first and then the oxygen. B) Close the oxygen and acetylene simultaneously. C) Close the oxygen first and then the acetylene. D) Place the torch tip under water until it extinguishes and then shut off the torch valves.
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