How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

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What is reactive power and where it is used.

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how to check three phase motor torque value?

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What is ignition module of a CAT Gas Genset G-3508 Engine, Alternator SR4B Series. HOw its checked for correct functioning.Is it repiarable or replacable?

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Hello, I am just preparing my self for a university interview and struck on the 11kv ring main unit system network. I just know that ring main unit has total three breakers, fuses and use to supply a power to any load/ building without any interrupt. But i am not be able to visualize the connections, either Ring main unit getting power from two different power sources? or there is always one feeder in complete ring circuit??? I would be highly thanks full of you help me.

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What is dc current source?

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HOW MUCH CURRENT DOES SYNCHRONOUS MOTOR TAKES AT SYNCHRONOUS SPEED IN NO LOAD CONDITION ?

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In A.C systems, fuse is placed in phase-in order to disconnect the circuit during faulty condition. But, what is the reason for putting "LINK" in neutral istead of connecting through (same) wire.

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what is the effect of power factor to (a) voltage (b) transformers (c) generators (d)transmission lines

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Why more than 2.5 MVA distribution transformers (secondary is 440V)are not used in india.

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We are planning to synchronized DG's with our captive plant in the event of black start of plant, but before sync we checked voltage of DG with our plant voltage and it varies from 5 V to 450 V. So in this condition how we can sync DG with plant ?

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What is the relationship between the sending end and receiving end?

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