Why carbon brushes are used in motors?

6 Answers   BARC,

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I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.

0 Answers   Jindal,

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I am having 120KVA UPS,which is connected to DG & normal power. What is the power drawn by this system when system is running on DG ????

2 Answers  

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how to differentiate a mpcb,mcb with a contactor? Explain their working operation

0 Answers   L&T,

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why can not run two different phase circuit in to the same conduite

1 Answers  

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how to can we synchronize different capacity of DG sets.60kva& 250kva?

2 Answers   Power Plant,

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what is electrical machines

1 Answers  

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if our motor load is 150 amp v- kv and we want to install capacitor bank then what is the exact value of that capacitor bank that we should install?and how we calculate that

0 Answers  

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what is thermo stat, explain how its working?

1 Answers  

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What is the physical significance of phase.. i.e. what is exactly the meaning in layman's language.. 1 phase, 3 phase etc ???

0 Answers   L&T,

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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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what ispositive, negative, zero sequence impedence?

0 Answers  

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