what will happen if we double the input frequency of a transformer keeping the voltage constant?

6 Answers  

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what is the function of 1 phase preventer?

3 Answers   ABB, Electrical,

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does over charging of a battery reduce its life?

4 Answers   KSEB,

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On a 3 winding transformer YNynd11, how do you apply REF protection to the Delta tertiary winding that is supplying auxiliaries to a substation?

0 Answers   Kwekwe Polytechnic,

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We have .ht motor which is 60Hz.we run on 50Hz.so that it's speed reduce but we had one prob.that motor winding temp increase up to 135 deg.we want reduce this temp.what to do?we arrange ext.cooling fan but not much effect.we want reduce this temp. Inhouse without affecting much.cost. also don't want reWINDING OF MOTOR?

3 Answers  

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what is the stear deltaprinceple?

0 Answers  

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If DC supply is given to a transformer it may a) Work b)Not Work c)Give lower voltage than the rated voltage on secondary side. d)burn the winding

12 Answers   wbsedcl,

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What does a permanent magnet generator do?

1 Answers  

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Explain dc generator with its types?

0 Answers  

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what is the difference between RCCB and ELCB?

3 Answers  

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How to clear BHEL written test exam.....anyone having experience pls refer me the link were i can get BHEL question papers....

1 Answers   Bhel,

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how much current we can get from 11kv overhead line ?

8 Answers  

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