Answer Posted / sanket

1) For fault level calculation
2) For voltage regulation

what is meant by 2 within a star in a voltmeter dial?

2099

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can the measured percentage error during calibration of single phase energy meter be negative?

2421

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Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

1439

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advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

1807

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DEFINE BREAKING CAPACITY OF BUSBAR & HOW IT IS CALCULATED?

5231

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what is a composite error in current transformers, why occurs & in which it will occur i.e, either metering ct/ protection ct

1866

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why occ characteristics of generator is also called as magnatization characteristics ?

2141

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what is the working principle of a DG Set, Alternator, & exiter

10226

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how to measure dc earth leakage current?

3182

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what do you mean by every IC 74 first digit.why are you using this no.why not using another no.

1909

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why we are using Load factor?

1964

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what is the IPC ? & what the uses ?

1509

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How Self works in DG set

2039

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1890

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The screw thread commonly used for transmission of motion is one of the following types of threads

1146

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