Question

Who used Nikola Tesla’s alternating current system at World’s Columbian Exposition at Chicago in 1893?
a) Nathaniel Hawthorne
b) Robert Underwood Johnson
c) Mark Twain
d) George Westinghouse

Answer 1

Ur answer..
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D. George Westinghouse

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Answer 2

Hey user !!

So here's u r answer !!

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George Westinghouse used the application of alternating current system .

hence option d is correct !

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