Answer / shiju

for higher frequency in generator need more poles so the size of the machine will increase.

Answer / peter

higher frequency means higher losses...so heat dissipation
requirements are more....size needs be bigger then...

Good day everyone,currently in our premise we using 30kw slip ring motor with resistance bank which we use as forward and reverse at conveyor bar handling. So,my question is how do we calculate the resistance bank which is suit the motor. Kindly,assist me... thank you

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could mail me the question papers for the test.

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now-a-days which devices are using for converter

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