WHAT IS MEANT BY vfd(VARIABLE FREQUENCY DRIVE )HOW CAN WE APPLY VFD TO MOTOR ? I WANT FULL DETAIL IF ANYBODY KNOW THE WEBSITE FOR THAT PLZ SEND .THANK U

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what is the function of turbo in dg sets

1 Answers  

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I know current,volt,powerfactor of an electrical line. In this line how I will calculate Active power and Reactive power

2 Answers  

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where is core-type and shell-type construction suitable for transformers ?

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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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Sir,I have finished my B.E in the Stream of EEE.How Can I get C license for Electrical???Please Tell me the way...My mail ID is praba1003105@gmail.com Cell:7402474123

1 Answers  

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3. What is Impedance Voltage in Transformer?

16 Answers   KESC, L&T, Torrent Power,

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1.4 What is meant by CT knee point voltage and how would you determine it

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A 3 phase motor operating off 415V system is developing 20Kw at an efficiency of 0.77 and power factor of 0.73. determine:- a)the line current. b)the phase current if winding are delta connected. c)the phase voltage if winding are star connected.

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what is brushless generator.How does work it..??

3 Answers   NTPC,

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what is skin effect and why is it absent in DC systems

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why we use capacitor in lighting fixer

2 Answers  

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