Answer / Upendra

An electromagnet is typically referred to as an 'Electromagnetic Device' or 'Electromagnetic Coil'. It consists of a wire coil wrapped around a core that can be made of ferromagnetic material. When electric current flows through the wire, it creates a magnetic field.

What will be the change in its efficiency and other parameters of a ONAN transformer if it changed to ONAF transformer ?

3 Answers   Tesla,

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why in motors dc extitaedtion is prefer

1 Answers  

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1 Answers   ABB,

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5 Answers  

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3 Answers   Bhel, Equate,

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1 Answers   BARC,

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4 Answers  

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Which type of questions well asked. ?

1 Answers  

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explain with diagram how to protect transformers and substations from over current with help of CT's?

1 Answers   BARC,

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