For a Potential Transformer(PT), the primary neutral terminal must be grounded before energization. Why....? What will be heppend if we energize the PT without grounded the primary neutral point? Why..........?

2 Answers  

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Why rotating machines are not allowed to run near critical speed region?

2 Answers  

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why we step down voltage level from 33kv to 11kv and 11kv to 415v.Instead we can step down voltage from 33kv to 415v directly using single transformer.

12 Answers   ABB, Adani, Central Electricals, Electrical, HCL,

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What is duty cycle and protection class?

4 Answers   SISL,

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Why inductor short on dc and capacitor allow to flow ac?

1 Answers  

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Transformer Specification say 66/11KV, 23/27/35MVA OFDAN,what is OFDAN? we know ONAN,ONAF or OFAF

2 Answers   Siemens,

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what are the different methods for the starting of a synchronous motor.

0 Answers  

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If age of Raju is 20% less than Sanju,then age of Sanju is how many % more than Raju

2 Answers   Tech Mahindra,

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how can calculation ate Amps for cabel. Ex-for 1sqmm wire hou many amps we can draw

0 Answers   Videocon,

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what is meant by insulation voltage in cables? explain it?

4 Answers   ABB,

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why some harmonics are disturbing while the others not

1 Answers  

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circuit diagram of ht panel

0 Answers  

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