Answer / lokeshraj

To prevent the sparking....

Answer / madhusmita

to prevent arcing and sparking

Answer / lokeshraj

My copied answer....

Answer / nmr

no need to earth desel tank. if u earth short circuits may
flow and fires the oil.

why we use carbon brush in exciter&genrator?

5 Answers   ABB, SMC,

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In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.

0 Answers   Kaytech,

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What happen if field ckt is open when a sailent pole alternator connected to infinite bus

3 Answers   Bhel, Nilkamal,

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why should we india maintain frequency of 50 Hz.

8 Answers  

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Can I use cable armour as a earth conductor? if not how many GI/CU wires I need to run along with cable?

1 Answers  

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What is the difference in calculating size of AC cables compared to calculating size of DC Cables? Usually DC Cables are larger than AC Cables although they have the same ampacity. Why is it?

0 Answers  

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my UPS is 600VA with 0.6 p.f and i use it for my computer which has 450W power supply unit, a monitor of 633nW and speakers. Can any one explain this.. because the output of UPS should be 360W (<450W)

2 Answers  

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what are the condition that makes hooter blow?

0 Answers  

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why we use REF and Differential Protection in one transformers?my doubt is both protections are operated in internal fault only.why we want to use 2 protections?please clarify.

7 Answers  

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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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can i able to get bhel previous exam question paper?

0 Answers   Bhel,

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when we conduct high voltage testing why milli amp. is required?

2 Answers  

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