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we use 3 phase supply for induction motor why not use two
phase supply .
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Answer Posted / t lakshmi narayana
Why because two phase supply cannot work.Let us consider 2
phase a,b.If a=0 then b=180 electrical degrees apart. Both
are out of phase i.e net torque is equal to zero.
Electrical degree = 360/phases.
In 2 phase it is 180
In 3 phase it is 120 which gives a torque.
| Is This Answer Correct ? | 1 Yes | 4 No |
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at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.
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