sir,i am swati. i am goin to gv jspl exam on 21st nov'10. iwant previous year question paper. plz help me out. my emailid is swatisinha.dav@gmail.com

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Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?

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why ac ratings are in tons?

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We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

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Why MCCB is Getting tripped sometimes when there is no load in the Midnight ?

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What should be value of Circuit breaker operating time and tripping time?

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What is the difference between LT CT & HT CT?Can we use indoor type transformer as an outdoor type or vice versa?

2 Answers   Bhel,

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What is required of exietation to the alternater.

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what are the tests comes under the type test, what tests comes under routine tests.

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What will happend if given Vfd out put to step up transformer

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As we know,charged clouds(from which lightning stroke initiates)may be charged with either +ve charge or -ve charge. Now say one cluster of cloude is fully charged with +ve charge & another cluster is fully charged with -ve charge. In the sky these two cluster of charged clouds have come in such a distance that, if they come clouser by some few yeards then the lightning discharge will take place between these two cluster of clouds. Under such a situation an Aircraft came inbetween. what happend??

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In Ferantti Effect Receiving end voltage is greater than sending end voltage but how it is possible. I know its all about charging current but give me some more detailed explaination?

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