Answer Posted / ashok kumar

electrical is properties of electrons.
electronics is flow of electrons

What is an order of a system.

1330

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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.

1877

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Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

2131

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Why you want to join non technical field when you are an engineer?

6746

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what is the practical application of full adder circuit?

1851

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DG SET BLOCK DIGRAM

2283

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We have 250 KW x 2 motors, which are load from 25% to 100% varying load in every minute , so how can we compansate the power factor. pl give your opinions on the above subject.

1866

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how to deside the capacity of chock for drive?

2050

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how could we know the size of cable by physical view?

1623

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The windings of a transformer are divided into several coils, because?

1279

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Explain different types of d.c motors? Give their applications

1122

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My load is 1635 KW. & current pf is 0.884, I have to improve it for 0.99.Please suggest what KVAR value is needed?

1587

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What are capacitive,resistive,inductive surge absorbation? What is ferranti surge absorber? What is lagrangian cost? What is Px operator?

2000

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comparision between ACB and VCB

2347

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HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT-SWITCH BOARD,MLDB,ACB,BUSBAR,ETC,......?

2090

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