In which of the following appUcations, direct current is absolutely essential ? Options: A . &nbspIllumination B . &nbspElectrolysis C . &nbspVariable speed operation D . &nbspTraction

In which of the following appUcations, direct current is absolutely essential ?

Question

In which of the following appUcations, direct current is absolutely essential ?

Options:

A . Illumination

B . Electrolysis

C . Variable speed operation

D . Traction

Answer: Option B

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