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Turns compensation is used to obtain ________(a) to compensate the turns(b) to equalise the turns on the windings(c) to protect the equipment(d) transformation ratio equal to nominal ratioThe question was asked in examination.The query is from Design Features of Current Transformers topic in section Extension of Instrument Ranges of Electrical Measurements |
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Answer» RIGHT choice is (d) transformation RATIO equal to NOMINAL ratio The best explanation: In a C.T., the transformation ratio is given by R = n + ^Ie⁄Is where, n is the turns ratio Ie is the CORE loss component of the excitation current Is is the secondary winding current Turns COMPENSATION is used to obtain the transformation ratio (R) equal to the nominal ratio (Kn). |
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