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The synchronous speed N_s of an 8-pole 3-phase alternator connected to a 50 Hz AC supply is:

A1000 RPM
B750 RPM
C1500 RPM
D3000 RPM

Explanation

Synchronous speed N_s = 120 * f / P = 120 * 50 / 8 = 750 RPM.

Submitted by: mcqstutor Team More Electrical Engineering MCQs →

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