how can we change the polarity of Alternating current rapidly?
how frequency of ac can be controlled and changed easily?
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What is kvar?
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How to test Power Transfomer vector group in the field?
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my name is venkat .i have good percentage in my academics(ssc 86, intermediate 83 b.tech 73) my question 1..after completion of my ssc i joined in bpc but i didnt got rank in emcet so i completed MPC in one year compartmentally ..so here what am expect question from this background?