Answer / pramod

in normal power system, if load is connected to only one common bus,then whole load depend on it. But, if load is connected in ring system, like ring main system, then if one section getting fault, then other will capable to supply power. So, it is more important for reliability of power supply

When we are working on transformer(132\11KV). we are going to isolate the transformer from both HV side and LV side. then we are applying grounding on both side. My question is that we required to isolate the VT which is still connected from secondary side.?

1 Answers  

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A transformer has negative voltage regulation when its load PF is A zero B unity C lagging D leading

1 Answers  

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Application wise, where we should use AC motors and where we should DC motors?

1 Answers   Nespak,

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For 415v,3phase,22kw rating of motor how to calculate MCCB rating

2 Answers   Zigma Technologies,

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how to select a air/vacuum circuit breaker.is there any thumb rule???

1 Answers  

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Why earthing is required, and what effect in earthing result is more than 5 ohm and less than 5 or equal to 0 ohm

2 Answers  

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Why? We r used 50sq. mm. And above size cable in 3.5 core and below size are used in 4core

2 Answers  

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We say that if voltage in a power system is increased,for a constant power the current will decrease (by P=VI). isn't this in disagreement with the ohms law(I propotional V;resistant const.).Since the resistance of transmission lines remains constant,shouldn't inc in voltage cause inc in current across the transmission line? I have read many articles across the net but still couldn't this figure this out. :( Guyz plz assist me with dis..:)..

4 Answers  

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What is meant by RCCB

3 Answers  

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What is the male and female contactors.where is it's used and what is the deferent betweens

1 Answers   Standard Chartered,

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A charge of 240 C is transferred in 2 minutes. The current flowing is:(a) 480A(b) 120A(c) 2A(d) 8A

2 Answers  

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for 4 MVA , 33K.V/6.6K.V transformer. secondary side the connected load is 3000H.P. What is the rating of capacitor bank to be insttaled.

0 Answers   SCCL,

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