Is ground earthing required for neutral conductor of a prime mover ie DG set?

1 Answers  

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For what purpose an AVR in generator sensing generator output voltage?and how the sensing is done by AVR?

3 Answers  

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we have an energy meter in a capacitor bank panel, So should we consider it's readings as energy consumption on daily basis. (when capacitor bank doesn't have any energy losses)

0 Answers   Honda,

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what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/

0 Answers  

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what happens when a DC supply is given to AC motor?

9 Answers   Areva, ISMT,

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what is the difference b/w neutral and earth?what is the need of earthing and what are the different methods for earthing?

4 Answers   NTPC,

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what are the things that can cause a three phase motor to crawl?

1 Answers  

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1. which type of transformer connection is preferred in case of power supply transformers? (A) Star/Star (B) Delta/Delta (C) Star/Delta (D) Zig Zag/Star 2. In a power transformer usuall which winding is closer to the core? (A) Primary winding (B) Secondary winding (C) Low Voltage winding (D) High Voltage winding 3. The power factor of a purely inductive load is (A) Zero (B) Lagging (C) Leading (D) Unity.

9 Answers   CECRI_Central_Electrical_Research_Institute,

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how can we test the polarity of a 3-phase transformer?

2 Answers  

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while grounding the galvenized metallic structures is it necessary to remove the galvenization at the point of contact? Or other wise is the galvenizatio a good conductor?

1 Answers  

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Period of infinite continuous fourier series a. N b. N+M c.infinite

1 Answers  

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why earth hole size is biggest in plug point?

13 Answers   RRB,

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