What is the formula to calculate distribution transformer De-rating on iron losses basis

0 Answers   IESCO,

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if we install two earth pits with a clear space of 5m without any interconnection,by checking the digital multimeter will it show continuity between earth pits? If so what would be the approx. value

0 Answers  

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how to select proper cable for ct wiring so that drop within the limit.

0 Answers  

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a 3 phase slip ring induction motor is wound for 4 poles on stator and 6 poles on rotor; when 3 phase balanced voltage source at 50 hz is applied to motor it will run at a)1500rpm b)1000rpm c)750 rpm d)zero rpm

13 Answers   Essar, PSPCL, PSTCL,

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How to calculate energy stored in an inductance?

0 Answers  

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how we check vector group dyn7

1 Answers  

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How will you calculate the correct KWH value if your CT is 600/5 and your KWH meter is rated for 100/5

1 Answers   L&T,

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What is VCB? where it is installed at SP. What is SP?

0 Answers  

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Sir, how to calculate the voltage drop and short circuit current of cable. please give me example and formulas.

1 Answers  

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What is disadvanage if power factor goes to in leading..?

0 Answers  

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How will I know that how many batteries I should connect to my UPS unit?

3 Answers  

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

0 Answers   RRB,

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