Answer:
The hardenability increases with increasing austenite grain size, because the grain boundary area is decreasing. This means that the sites for the nucleation of ferrite and pearlite are being reduced in number, with the result that these transformations are slowed down, and the hardenability is therefore increased.
Answer:
both technologies offer a cleaner alternative to internal combustion engines, and both use electric motors powered by electrochemical device.
Answer:
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Answer:
A direct-current (DC) generator is a rotating machine that supplies an electrical output with unidirectional voltage and current.
Explanation:
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