Answer / Mayank Kumar Jaiswal

The size of a transformer, specifically its physical dimensions and kVA rating, can be affected by changes in operating frequency (fr). In general, an increase in operating frequency leads to a reduction in the physical size of the transformer due to decreased core and winding sizes. However, there are limits to this scaling, as smaller dimensions can lead to increased copper losses and reduced efficiency. It is essential to balance the requirements for size reduction with maintaining acceptable levels of efficiency and insulation clearances.

What is Exitation voltage and Exitation current? What is the function of these in Alternator?

2 Answers   TC, Tisco,

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Please help me regarding my one concern. - During earth pit testing we noticed that the Clean earth pit and dirty earth pit showing continuity (Resistance value - 5ohm) . I want to know that if both earth pit have separate location and there is not internal looping between PIT then why such continuity is showing on it . Because of this issue the field side all earthing point showing short. In PLC panel we are providing two types of earthing cable which is coming from separate earth pit (Clean and Dirty earth pit) because of earth PIT showing short our PLC is not complying spec . please help regarding this issues.

1 Answers  

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How convergengr of nr method is not dependent on selection of slack bus and how gauss siedel method depends?

1 Answers  

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Why corona leads to production of Ozone and glow of the color VOILET?

1 Answers  

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Which Machine u will prefer to use at a place where flammable gases are coming out & why ?

4 Answers   NTPC,

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prefer any good electrical engineering book.....it should be useful in the practical fied?

1 Answers  

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Is there any Flood lighting system which produces more light (More power consumption 1000W,400W etc.,), white light and restart immediately after power restoration ?

1 Answers  

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which type of questions asking for solar companies?

1 Answers   GE,

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plz tell me,ht and lt panel terminals in substations explain beiefly

1 Answers   APCPDCL,

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How would you supply power to a village which is very far from a sub-station and has only a 11k?

4 Answers   Power Grid,

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What is power relay?

1 Answers  

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am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

1 Answers   L&T,

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