Which motor has high Staring current A. Series DC motor, B.Induction motor c.Synchronous motor D.DC Shunt Motor

4 Answers   CCP,

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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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what is current actully?significance of current...not rate of change of flow.....

3 Answers  

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Why indicated only R.Y.B to phase.

6 Answers   Bhel,

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WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE. HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE. PLEASE SUGGEST ME

0 Answers  

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PAC and simple Ac different

0 Answers  

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how we can know which is Lv side and HV side of transformer by just seeing it?

7 Answers  

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at which voltage level arcing ground is occurs ??????????

0 Answers   TATA,

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how to calculate the kw, Amps consumed by a capacitor, give me the formula for KVAr into capacitance,KVAr into KW & KVA, Amps

3 Answers  

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After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?

0 Answers  

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What is the power factor of a transformer at no load?

0 Answers  

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why the protection turbo generators is most complex?

0 Answers   Infres, L&T,

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