hot water tank,top element 240v across,the bottom 120v across,why?

1 Answers  

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What are the factors considered for the selection of cable?

6 Answers   NPCIL,

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Why R ph of Hv and Lv is shorted or joined together while taking vector group?

1 Answers   IOCL,

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Will sag depends on the Specific Resistance of the conductor?if not Why??????????

2 Answers   BARC,

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If 110V DC Coil Contactor taken 15ma DC on load,than how much AC current wil be taken?

0 Answers   Lafarge, Shree Cement,

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Why star point of star connected motor is not grounded? Why alternator is operated at lagging power factor?

3 Answers   TCL,

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what is meant by IGBT how they differ from tyristor ?

0 Answers  

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why are we using multiples of 11 in substation.

2 Answers  

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what is negative phase sequence

1 Answers  

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Enlist four components of electrive drives.

0 Answers  

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how system fault level is calculated?

1 Answers   HCL,

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Define average demand?

0 Answers  

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