Draw the circle diagram for a 5.6 kw 400 v 3 phase, 4 pole, 50 Hz slip ring induction motor from the following data No load test 400 v, 6A, 380 W Blocked Rotor Test 150 V, 19 A, 820 W The ratio of stator to rotor turns = 2.5, %3D stator resistance per phase is 0.67 ohm and rotor is 0.185 ohm, calculate(a)full load current and power factor. (b)full load torque and maximum torque. (c)maximum power factor and slip at maximum torque. (d)Resistance to be inserted in rotor circuit to give starting torque 150% of full load torque. *

Introductory Circuit Analysis (13th Edition)
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Draw the circle diagram for a 5.6 kw
400 v 3 phase, 4 pole, 50 Hz slip ring
induction motor from the following
data No load test 400 v , 6A, 380 W
Blocked Rotor Test 150 V, 19 A, 820 W
The ratio of stator to rotor turns = 2.5,
stator resistance per phase is 0.67 ohm
and rotor is 0.185 ohm, calculate(a)full
load current and power factor. (b)full
load torque and maximum torque.
(c)maximum power factor and slip at
maximum torque. (d)Resistance to be
inserted in rotor circuit to give starting
torque 150% of full load torque. *
Transcribed Image Text:Draw the circle diagram for a 5.6 kw 400 v 3 phase, 4 pole, 50 Hz slip ring induction motor from the following data No load test 400 v , 6A, 380 W Blocked Rotor Test 150 V, 19 A, 820 W The ratio of stator to rotor turns = 2.5, stator resistance per phase is 0.67 ohm and rotor is 0.185 ohm, calculate(a)full load current and power factor. (b)full load torque and maximum torque. (c)maximum power factor and slip at maximum torque. (d)Resistance to be inserted in rotor circuit to give starting torque 150% of full load torque. *
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