Why pmg used in electrical generators for excitation.is there any other method without pmg ?

1 Answers  

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I want to know the currect formula for industrial lighting lux caluculation & light fittings selection

2 Answers   MRF,

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WHAT IS DOL STARTER? HOW IT WORK? GIVE ITS CONTROL AND POWER DIAGRAM .

0 Answers   Bhel,

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What is the pratically meaning of neagative going ac current.

1 Answers  

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low voltage grounding is done by?? 1)solidly gnd 2)ressistance 3)reactance

1 Answers  

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What are the protective devices in a DC/AC motor starter?

1 Answers   CTS,

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Why the design of electromechanical energy conversion machines is based on the medium of conversion as megnetic field not as electric field?

2 Answers  

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what is the function of potential transformer in s/s

6 Answers  

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role of europe union in UK safety legistlation (electrical safety)

0 Answers  

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why grid failure happens?

1 Answers  

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why an ideal voltage source has low internal resistance????

1 Answers  

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What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?

0 Answers  

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