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What is emf equation of alternator? |
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Answer» Emf = 4.44 kc kd f ∅ T volts. Kd = Distribution factor = sin m β/2 / m sin β/2 kc/kp = Coil span factor /Pitch factor = cos α/2 kf = Form factor = 1.11 ∴Average emf induced / Cycle = ∅ N P/ 60 = ∅ P ∗120 f / 60 * P =2 f ∅ volt If Z is the number of conductors = 2T (T = two sides of conductor) emf induced = 2 f ∅ Z =2 f ∅ 2T = 4 f ∅ T ∴ RMS value of emf induced = form factor * emf = 1.11 * 4 f ∅ T = 4.44 f ∅ T volts. |
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