why it is necessary to maintain frequency constant in a power grid ?

1 Answers   NTPC,

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Can we parallel two grid with different incoming voltage. Ex.let say one grid is 132kv and another is 220kv.

2 Answers  

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What are the components connected in between the power supply coming from an electric pole to HT & LT Panels in a large commercial building or how the power supply connected from Electric pole to Transformer & then to the HT & LT panels of a building? Please send me answers via mail, my id is yogiagarwal@gmail.com. If possible, please give a line diagram.

0 Answers   Ranbaxy,

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which is better ac or dc?

2 Answers  

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what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com

0 Answers   Bhel, CFL,

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when a 500kva-400hz single phase transformer operated on a 100hz supply then what will be kva required

2 Answers  

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the distance from my office to d.g is aprox 400mtrs and voltage drops ibn my office near about 40 volt what should i do p[ls suggest.

4 Answers  

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What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva

0 Answers   Shasun Chemicals,

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how to calculate the cable size for LT and HT power cables with detail explanation?

2 Answers   Asset Developments, Bhel,

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what is the common earth

0 Answers  

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In D O l starter motor starts as a star connected ,then in star delta starter also motor initially starts as star how come star delta is preferred from dol

2 Answers  

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why we use crushed stone in switch yard?

3 Answers  

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