I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

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Why we use two wattmeter during block rotor test and no load test of 3phase induction motor? And how can we understand the neat power requirement of from this test?

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Explain the propagation of harmonics in the network and influence of phase angle of harmonics.

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how the inner and outer body is separated in aircrafts?

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How are load losses and no-load losses measured at site in a DG set?

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In oil transformer which oil is used & what should be the insulation resistance & heating capacity.

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what happens if we connect two parallel ideal voltage sources across resistor?what is current flowing through resistor?

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How to check the thermocouple is correctly connected to cable for K type? (i,e positive pole is connected to non magnetic conductor and negative pole is connected to magnetic conductor)

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what is neutral grounding resistor?

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Is there any calculation to find unknwon(unferroled) phases R Y B in alternator,3 phase motor anybody shoot my problem. how can we notice this is the respective phase?

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what is the formula to find battery back up of ups?

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what is the difference between analog and digital signal?

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