i have dry type transformers can you help me that how many tests i can do to know the performence of transformer and also please tell me about the BDV test and Insulation resistance test in oil cooled transformers

4 Answers   Hyundai,

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when i am going to take trail on a 3ph sq.i/m motor 5.5kw, i observed that RPM of the motor is very low as compared to the rated RPM and also it rotates in clockwise in first ON command,and anticlock wise in second ON command. finally i observed that on phase is no available . but iam not clear about, why the motor is rotates in both directions without any phase interchanging.pls answer to my question.

1 Answers  

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I Just want do EHS Certified Certification Distance Course From Govt approved,so can any body provide me details.

0 Answers  

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why is control bus bi-directional?

0 Answers  

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Hi all I had applied for the RRB test in the ELECRICAL category. I would be pleased if any of you can sent me previous year question papers. Please forward the question papers to varshashahi@yahoo.com Thanks and regards Varsha

0 Answers  

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what is circuit recombiner and how it is different from circuit breaker

0 Answers  

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What are the advantages and disadvantages of short-pitched winding?

0 Answers  

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Between Star-Delta & Star-Star Power transformer which one is efficent for Earth Fault?

10 Answers  

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what is the k var ratting of 1250kva

0 Answers  

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As per principle we say in three phase supply ,the voltage is producing by phase angle between two phase so two phase is needed means then why we using three phase ?

2 Answers  

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how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

1 Answers   Bhel, Indorama, Power Grid,

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how to find transformation ratio of squirrel cage induction motor

0 Answers   BITM, WER,

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