in slip ring motor if motor specification is given how we calculate its rotor resistance in starting

1 Answers  

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Why VCB and SF6 breakers to be used in HT used by cant ACB of higher rating to be used for 11kv and 33kv.

8 Answers   TCS,

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What is the function of Harmonics filter, and how to calculate that rating of the energy saving?

1 Answers  

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If you don’t have coal, salt and copper, then how would you earth your connection temporarily at a camp site.?

1 Answers   Focus,

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My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

0 Answers   Premier,

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How to calculate Voltage regulation of 22 KV Over head Line.

0 Answers  

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Why the substation measure in KV but not in the power ratings of transformer.

4 Answers  

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explain the existence of reactive power in electrical engg?when it generates?

1 Answers  

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A low wet bulb temperature indicates

0 Answers   Caterpillar,

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What is the difference between grounding & earthing?

9 Answers  

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i applied for c licence with my one year apperents trainee and i have attaced with A grade contractor company experiance that is for 14 monts experiance this document is sufeicant for c licence? pls tell why they rejected

0 Answers   TNEB Tamil Nadu Electricity Board,

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What is the safety factor is to be consider while selecting the switchgear and protection for electrical system

1 Answers  

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