Answer / guest

Eventhough altenators are associated with stability, still
we use alternators because of its inherent advantages.

1.when we are generating electricity from conventional
sources like thermal n hydal, the primemover input is in
our control so u can maintain constant speed. so we use
alternators because dese m/cs run at constant speed.


2. other advantage is powerfactor is in our control. By
changing the excitation we can control the power factor.

3.Cost is less when compared to same rated DC alternator.

sir, what is the importance of Fault MVA. how to calculate fault mva of 33kv substation connected by 6.5 km line(single circuit with equal spacing) with 110/11kv transformer in 110kv susbstation.the fault mva on 11 kv bus in 110kv susbstation is 208mva.

0 Answers  

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What happens if 25 Hz frequency is applied for 400/200,50 Hz single phase Transformer.Will Voltage increase ?

2 Answers   Bhel, Dawlance, IBM,

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7 Answers  

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HT and LT cables can be laid on same cable tray

1 Answers  

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what is bus pt and what is the function of it ???

8 Answers   TATA,

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When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

6 Answers   APNPDCL,

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What is the safety protection? Name the protections of Transformer?

1 Answers   HSL,

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How many methods use the load flow solution?

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which level of transformer oil has got low dielectric strength ?why?

2 Answers  

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neutral earth resistance testing is it possible for transformer while in load condition

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How to convert a two phase power into a three phase power in induction machine?

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what is mean by busbar and what is the difference between busbar,transmissionline,feeder,distribution line

0 Answers  

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