While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

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why two contacts(in series) are using in closing circuit

3 Answers  

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what will happen if frequency is below 50 hz?

0 Answers   Student,

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I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

1 Answers  

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What is current chopping in CB?

1 Answers  

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Wy transformer ratings are in multiple of 11 always?

2 Answers  

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What is mean by Power factor

5 Answers   Fenner,

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If we give 2334 A, 540V on Primary side of 1.125 MVA step up transformer, then what will be the Secondary Current, If Secondary Voltage=11 KV?

3 Answers   L&T,

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what is bus coupler, where it used.

14 Answers   Diebold,

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why there is spacing between two rails in railway?

3 Answers   DS Group, RRB,

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Frequency in the control system represents? Continuous system in time domain ? In frequency domain?

1 Answers   CCP,

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how we can know the rating of transmission line by no. of insulators disk ??????????

3 Answers   NTPC,

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