If the 3-phase alternator has 4 poles and has synchronous speed of 120 rad/s. Then the mechanical speed in rad/sec is?

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answerhappygod
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If the 3-phase alternator has 4 poles and has synchronous speed of 120 rad/s. Then the mechanical speed in rad/sec is?

Post by answerhappygod »

a) 60
b) 240
c) 120
d) 30
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