Basic philosophy of applying 3P tripping for uptill 132KV switchyards & for 132KV & above 1P/3P tripping is used.

1 Answers   L&T,

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How can we measure the frequency of a rotor running in full load condition? Explain the method of measuring.

2 Answers   Wipro,

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what is mean by flux

2 Answers  

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Why high voltage lines (overhead ) are called high tension lines?

8 Answers  

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Can we put 3 layers of cable tray while installing tray

0 Answers   NTPC, Siemens,

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What is the minimum setting in REF relay because i am facing some problem whenever power resumes after power failure my transformer is tripping because of REF trip. I am using CSPC make numerical relay(DIP switches). Now setting is 15 percentage. What is the reason for this triping. I sm waiting for answer

2 Answers  

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Does the hysteresis loss is due to retentivity property of the material? or it is due to reluctance property?

2 Answers  

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what is CT class? depending upon which it is classified?

3 Answers   Siemens,

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how braking & making capacity of circuit breaker is calculated?

0 Answers  

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what is a diffrence between MCCB, RCCB, MCB, & ELCB ? what is rated current e.g. on motor name plate indicated that is rated curent? what is full load current? If we run D.C. motor with mechanical coupling and we measure voltage on terminal it shows voltage or not ? same in AC also possible ?

5 Answers   Reliance,

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what is the difference between old fan regulator and new fan regulator

1 Answers  

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whu does the power factor of diesel generator always be 0.8. please explain

5 Answers   Dalkia,

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