what need of NGR(neutral grounding registor)? What it works?

2 Answers  

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What is 100% protection of generator? Why 95% protection is used not 100%?

9 Answers   NTPC,

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actual rated capacity of a disc insulator??

5 Answers   OPTCL,

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i am having a 3 phase 12.5HP motor,that is connected in Star/delta.Without any Trip that motor stopped suddenly why?

8 Answers  

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IF ANY MATERIAL AVAILABLE IN MARKET FOR MOTOR PROTECTION INSTEAD OF OLR & CONTACTOR ?

1 Answers  

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and gate circuit diagram,amplifier circuit diagram

0 Answers   NHPC,

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Why does the radius of armature is less than the radius of pole shoe?

0 Answers   ABB,

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What is the difference between Off line UPS and Line interruptible UPS?

1 Answers   Etisalat,

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Petroleum jelly is applied to the terminals of the lead acid battery is to prevent?

2 Answers   KSEB,

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what is RNG in the DG synchronizing by PLC?

0 Answers  

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can u tell the difference between star - star transformer and delta to delta transformer?

2 Answers  

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What are the advantages and disadvantages of negative feed back?

0 Answers  

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