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Google resistivity of copper

why dc moter are not earthed ????

2 Answers  

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How to calculate electrical Induction motor heating and cooling time constant,11KV,2850,12P,SCIM

2 Answers   Bhel, Regal Beloit,

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why actual valve timing diagram is different than ideal valve timing digram of a 4 stroke engine?

0 Answers  

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what's the reson that,Load is not same on VFD I/P and O/P Side.whenever DOL condition load is same I/P and O/P side.

1 Answers  

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A 3PH MOTOR RUNNING IN NORMAL CONDITION AND ITS AMPERE ALSO UNDER ITS FULL LOAD CURRENT,ITS CABLE RATINGS ALSO HIGER THN ITS CAPACITY,BUT ITS CABLE GETTING ABNORMAL HEAT(NOT TOO HOT)WHY ITS GETTING HOT LIK THIS?

5 Answers  

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can we use breather in a SEALED power or distribution transfomer instead of injecting nitrogen.

1 Answers  

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Why we Specify Transformer rating 433 V Instead of 415V ?

8 Answers   ABB, ERA, Uddans,

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how to select the power contactor in Diffrent AC motors.

6 Answers   Titan,

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What is ics,icu,icw of load breaker

5 Answers   Havells, NPCIL,

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

0 Answers   OEG,

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what is the difference between the alternator used in hydro and thermal power plants??

2 Answers  

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Help need in transformer !? Hello Friends The parameters of 2300/230 v 50hz t/f is R1=0.286 ohm R`2=0.319 ohm Rc=240 ohm X1=0.73 ohm X`2=0.73 ohm Xm=49.2 ohm Secondary Load impedance ZL=0.387+J0.29 solve the exact equivalent circuit with normal voltage across primery.. I know every thing but i cant find CURRENT I1=? and I`2=? Please help me give solution or only Formula please please...

0 Answers  

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