Answer / navyasree

This test is similar to open circuit test on a
transformer.During this test ammeter, voltmeter,
wattmeter readings are noted.formula for the induction
motor in no load condition in star or delta is
Wi=W1+W2 Wi=sqr(3)VIocos(pi0)

Difference between ELCB and RCCB?

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1. what type of winding of slip ring ac induction motor rotor and why. 2. how the heating element use in two phase (415 volt)and what rating of element, you prefered.

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In chillers & freezers which gas will be use?

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what is meaning of AMF, WHY IS USING IN GENSET

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if we use fuse in neutral what will happen?

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what is Wave Trap? And its Function ? Detail? Where it is Used?

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we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

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what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?

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