Answer Posted / shinyvikram ganji

rating of the transformer is done based on losses(core and
copper losses).

how to calculate single phase motor efficiency ?

2093

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Why is it prefer to initiate circuit breaker failure by "86" lockout relay not by "94" tripping relay ?!

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How to choose size of the cable w.r.to current carrying capacity ...

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sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder

2042

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what is the function of impulse relay

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how can we make cable shedule for controll wiring ? which details must be required for it.?

2081

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In general bus riser follows the bus section in SWGR. What are impacts if bus section follows bus riser?

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What is the general system requirement of alternator?

1799

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Explain thin film resistors and wire-wound resistors

974

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what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group

2027

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why HT armoured cable does not glanding

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what is difference between 9kv 5ka surge arrester and 9kv 10ka surge arrester.

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Define newton's law of viscosity.

1128

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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.

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I have finish diploma electronics and five years experience in electrical field in ht service how can i get c licensce or other electrical certificate

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