A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

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how to calculate the torque of a motor?

0 Answers  

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Can we parallel two grid with different incoming voltage. Ex.let say one grid is 132kv and another is 220kv.

2 Answers  

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Why rating of transmission line in kv not in kva

2 Answers  

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How to take vector group test for Ynd11 transformer.

2 Answers   Voltech,

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11kv alternator commissioning test?

2 Answers  

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WHAT HAPPENS IF FUSE IS CONNECTED TO NEUTRAL WIRE

5 Answers  

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why vector group is ued

2 Answers  

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Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

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Any one can explain if there is any harm from humming noise heard from air circuit breaker : we have 415 switch board having two incomers from transformers 3.3KV/415V , when bus coupler closed, and open one ACB incomer to work in one of the transformers, the current started hunting around 50 Amps, and heard humming noise from the air circuit breaker, although the load current was only 1200 amps while the ACB capacity is 2500 Amps, and the transformer 1600 KVA. The same didn't happen when taken the other transformer offline. Why this humming noise and current fluctuation? is there any implication or danger, bearing in mind that we just returned everything back to normal and stopped the maintenance of the transformer. Shall we go ahead and ignore this noise?

6 Answers  

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What is hysteresis losses?

2 Answers   GMR,

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What is the distance between each insulator in 33kv transformer and how can it calculate

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