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GATE Electrical Engineering (EE) 2017 Shift 1 Solved Paper

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Question : 55

Total: 65

A 375 W, 230 V, 50 Hz, capacitor start single-phase induction motor has the following constants for the main and auxiliary windings (at starting): Z_m = (12.50 + j15.75) Ω (main winding), Z_a = (24.50 + 12.75) Ω (auxiliary winding). Neglecting the magnetizing branch, the value of the capacitance (in μF) to be added in series with the auxiliary winding to obtain maximum torque at starting is ___________.

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