Answer / asif.k64@hotmail.com

Reactive power is used as capacitor bank to maintain power
factor in A/C supply.

Answer / rajeee43@gmail.com

IN AC CIRCUIT THERE IS LOT OF MOTORS AND GENERATORS ARE
PRESENT,THE OPERATIONS OF SUCH DEVICES REQUIRE MAGNETIC
FIELD TO WORKING(MUTUAL INDUCTION),TO PRODUCE MAGNETIC
FIELD THEY REQUIRE REACTIVE POWER AND REQUARE POWER IS USED
FOR ENERGY CONVERSION.(rajeee43@gmail.com)

In Ferranti effect,Receiving end voltage is greater than sending voltage,why? can anybody tell me the answer

15 Answers   Engineers India Limited,

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in 3-phase transformer which type of transformet is used in output side?

6 Answers   Essar,

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What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

0 Answers   GNFC,

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List few applications of d.c series motor?

0 Answers  

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What is resistance reading of earth copper rod with grid and without grid?

0 Answers  

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Three set (each phase contain 2 cable of 400 mmsq CU XLPE AWA) of single core cables are connected to 11 KV motor of 14 MW & the switch gear supplay is taken from 11kv feeder & this supplay taken from 275 KV substation. Problem is one pair cable(L3- 2 cable ) getting very hot & gland melted and damaged in switch gear side. the other two cable haven't any more hot(ambient temp only & L3 haveing 95- 100 Degree C. The same problem happened in 275 KV substation switch gear side also where the supply taken for 11 kv switch gear. But here L2 phese cable had problem. Why it is happening like this?. The cable having temperature different at different location from gland side inthe case of 11KV feeder of 275 kv substation. why ?

2 Answers  

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How are calculated the aluminium busbar cross section area?

2 Answers  

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2. Modify your design in question 1.a so that the circuit works according to the following function table X Y F 0 0 Clear 0 1 No Change 1 0 Parallel Loading 1 1 Count 3. Design a circuit that detects the pattern 010 in a serial input X considering: 3.a Overlapping 3.b No overlapping

0 Answers  

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what the purpose of data retrivala panel in substation

1 Answers   NCC,

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can we produce cosine wave instead of sine wave? will it usefull?

4 Answers   BARC,

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Why VCB is required and ACB is also require? what is the BDV of Trafo of 11/33 KV

1 Answers  

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Practical condition in 400KV Sub station:- Breaker(open) , isolator(open), Earthing (close) at both end e.g A & B. Now Open A Stn Earthing than Open B stn Earthing (Which have a 50MVA reactor) , AND suddenly show R,Y,B phase 704KV,573KV,118KV respectively. Que is without closing of breaker how it is possible.???? My Whats app No:07621840498 for Further Discussion. Pls experts suggest.

0 Answers  

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