Why all voltage level are multiples of 11, like 220V, 440V, 1100V instead of 200V, 400V, 1000V?

9 Answers   Indian School of Mines,

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why we used.c source in the field of the alternator , why not a.c source.

1 Answers  

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state the working principle of incondenscent tube?

0 Answers  

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how to carried out tan delta test in 11 KV alternator ?

0 Answers  

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what are the safety measures of induction motor?

3 Answers  

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Will an earth leakage trip be activated if the component or wiring is faulty on low voltage equipment.Example An electrical Cat Scarer placed in the garden and water gets into the wiring.

0 Answers  

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an off load but energized 11/0.4 KV, 1250 KVA T/F has a power factor of 0.65(capacitive)..!! why is it so, though T/F being an inductive device ??

4 Answers  

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why the undervoltage relay's interlock is used in earthswitch closing operation of the 400kV line scheme?

2 Answers  

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What do you mean by linear and bilateral network?

20 Answers   Automation, Disa, EGCB, Infosys, OPTCL, TICT,

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how to calculate diesel consumption of a D.G.Set?

4 Answers  

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Can u tell me about HVDC transmission?

6 Answers  

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we have 3.5MVA-11/6KV transformer. how can we calculate earth fault current and NGR calculation?

0 Answers   IGC,

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