Why frequency fix in 50 Hz?

6 Answers  

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how to understand the controling circuits example star- delta-starter controling daigram please let me know

3 Answers   GMR,

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What is the tests required for a 132 kV, 400 kV , 765 kV for a Circuit Breaker and Power Transformer before commissioning ?

0 Answers   Eprosys Engineering Consultants,

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what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing

0 Answers   ABB, Genpect,

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Among the following Which is vector quantity? a. Flux b. permitivity c. flux density d. magnetic intensity

2 Answers  

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how to select cable size according to ampere.

1 Answers  

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Can anyone provide with a SLD for HT panel installation for a 33KV line and distribution end has three 1.5MV transformers. Is it suitable to use OCB or VCB and also provide me the suitable rating and its connection diagram.

0 Answers   TATA,

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Define newton's law of viscosity.

0 Answers   Godrej,

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who iz power minister ?? :P

1 Answers   IOCL,

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which frequency is to be selected for measuring earth resistivity

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

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What does OHB stand for in specifications for circuit breakers, especially found in SF6 circuit breaker?

1 Answers  

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How does ELCB work when exist earth foult? and How does RCCB work when exist earth foult?

1 Answers  

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