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When is the double layer bar or wave windings made use of?

Posted: Thu Jul 14, 2022 10:19 am
by answerhappygod
a) when single turns coils are necessary as with turbo alternators and unipolar low voltage machines
b) when single turns coils are necessary as with turbo alternators and bipolar low voltage machines
c) when single turns coils are necessary as with turbo alternators and multipolar low voltage machines
d) when double turns coils are necessary as with turbo alternators and unipolar low voltage machines