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Semmy [17]
3 years ago
10

Which of the following accurately describes semiconductor diodes? A. Unlike junction diodes, point-contact diodes are enclosed i

n a suitable casing and have terminals for connecting them to a circuit. B. Unlike point-contact diodes, junction diodes utilize a point of metal wire in contact with a single wafer of P-type or N-type material. C. Junction diodes are preferred over point-contact diodes for most purposes. D. Point-contact diodes are more likely to be used as rectifiers than junction diodes.
Chemistry
2 answers:
Anna007 [38]3 years ago
5 0
The correct answer is letter A: <span>Unlike junction diodes, point-contact diodes are enclosed in a suitable casing and have terminals for connecting them to a circuit.</span>
monitta3 years ago
4 0
I think the answer is D
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Explanation:

atomic hydrogen torch utilizes an electric arc whereby two closely - but not touching electrodes - result in the release of powerful electric spark as the current tries to flow through the gap. The gap is filled with hydrogen gas in an atomic hydrogen torch rather than air. The electric arch is split the hydrogen gas molecules into hydrogen atoms (some in plasma form). When the hydrogen atoms land on cooler objects like the metal being welded or cut, they region back to H₂ molecules releasing enormous amounts of heat on the surface. Surface temperatures can reach   4000 °C. The use of hydrogen gas protects the metal being welded from oxidation. Oxidation may compromise the quality of the weld.

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<u></u>

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