Academics – Electro-Technology : 2014/DEC/05 – 2012/DEC/05
Question
Q11. Three identical coils are delta connected to a 3 ph, 440 V, 60 Hz supply and consume a total power of 9 kW at a power factor of 0.8 lag.
(a) Calculate the resistance and inductance of EACH coil.
(b) If the same three coils are now connected in star to the same supply, calculate the current in each line if:
(i) One coil is short circuited;
(ii) One coil is open circuited
Asked in Year/Month/Ques No.
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