What is the rating of your substation and what are the different types of substations?

5 Answers   Bhel, NTPC, UPPCL,

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In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?

1 Answers  

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what is the difference between relay, contactor

4 Answers   BRSS, Vishay Intertechnology,

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What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP

0 Answers  

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What are the advantages of stationary armature and rotating field system?

0 Answers  

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i have to use generator in my project,which gen. i can use?

1 Answers  

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What is the typical enclosure type used for Indoor switchgear / Outdoor switchgear Units? - In Onshore / offshore Units?

0 Answers  

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WHAT IS RETARDATION TEST IN DC MACHINES?

4 Answers  

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HT/LT PANEL TEST?ALL TEST

0 Answers  

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how does a tube light starter works?

2 Answers  

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What is Autodialer used in FAS????

2 Answers   Emerson,

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what is the voltages using in movie theaters??? why ??why not other??

0 Answers   Lanco,

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