Answer / bb

oscillations

1)we r having one problem .one dry type transformer(6.6KV/433V)is taking high magnetizing current on delta connected HV side of "U" phase when compared to other two phases.could any body tell the reason why it is happening? 2)why CT secondary side protection core has got higher winding resistance when compared to that of metering core of same CT?

2 Answers  

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what do you mean by linear and bilateral network?

2 Answers  

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when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil

0 Answers  

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what will happen when a bulb s connected btwn two phases of a three phase delta connected source?

6 Answers  

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wwht is wave trap used in ht line

4 Answers  

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please send me previose rrb junior engineer qustion papers

0 Answers   RRB,

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what is the difference between Miniature circuit breaker & motor control circuit breaker ?

4 Answers  

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if we connect a ohmmeter across shorted capacitor .what will be the reading..will it be zero or infinity

2 Answers  

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how did the testing of protection relays done through current injection

0 Answers   Bhel,

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In Which vector group power transformers are mostly manufactured?

1 Answers   MRF,

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what is the difference between relay and a contactor.

5 Answers   Siemens,

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It is a three inch fan and i want it to rotate to other direction .I've tried cutting the wire and reconnecting them inverse like black to white and white to black ,but it won't start rotating when i plug it in that way.And then it works again when i rejoin the wire to the way it is. I don't know what causing the problem.Is there anyone familiar with these small mortor?Any suggestion would be appreciated.Thanks!! http://i296.photobucket.com/albums/mm163/sasukebloodwheel/110527-105859.jpg

2 Answers  

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