no.14 to get same answer
Posted: Thu May 05, 2022 2:24 pm
no.14 to get same answer
[914.5 kW, 13 kV] (Elect. Machines, A.M.L.E. Sec. B, 1990) 14. A 400-V, 6-pole, 3-phase, 50-Hz, star-connected synchronous motor has a resistance and synchro- nous reactance of 0.5 ohm per phase and 4-ohm per phase respectively. It takes a current of 15 A at unity power factor when operating with a certain field current. If the load torque is increased until the line current is 60 A, the field current remaining unchanged, find the gross torque developed, and the new power factor. [354 Nm; 0.93] (Elect. Engg. AMIETE Dec. 1990)
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