what is the difference between RCCB and ELCB?

3 Answers  

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why the check zone and main zone are used for Busbar Protn. scheem?

0 Answers  

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why should the primary of transformer be connected in delta in a heat run test?

0 Answers   Bhel,

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check list for anuval maintatince check list of oil transforms

2 Answers  

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trasnfarmaer core make

0 Answers   MPSEB,

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at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

0 Answers  

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why we cant use AC supply products in DC supply?

21 Answers  

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while buying 30 kva on line ups for 1 phase ouput, we ave to calculate the number of batteries for 2 hours back up? how to calculate the ah rating and number of batteries

1 Answers  

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In siemens S7-300 PLC, what is function and function block ? What is the difference between them ? When to use function and when to use function block ?

0 Answers  

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what is meant by directional earth fault and non directional earth fault? describe both.

0 Answers  

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What is the relation between the Peripheral speed(N) , no.of poles(P) and diameter(D) of a cylindrical rotor alternator ?

5 Answers   NTPC,

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what will happen if synchronous machine rotor fed from single phase ac supply 

0 Answers  

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