Answer / praveen kumar gupta

Nothing happen if earthing is firm otherwise AC and DC will
mix and give unwanted wave shape and it will be harmfull if
that wave shape is significant for the system .

What is OLTC in a transformer, specify its fuction.

35 Answers   Bhel, Isgec, L&T,

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in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A)

1 Answers   DLF, Tata Steel Limited,

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how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc

2 Answers  

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What is Tan Delta Test

1 Answers   Power Grid,

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how the ac voltage are selected like 220v,415v,750v,1000v& 1.KV,6.6KV,11KV,33KV,66KV,132KV,220KV & why these are selected like these orders

2 Answers   Jindal, JSW,

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Difference between induction motor and synchronous motor? i Think Synchronous motors operate at synchronous speed (RPM=120f/p) while induction motors operate at less than synchronous speed (RPM=120f/p – slip). Slip is nearly zero at zero load torque and increases as load torque increases am a right pls guide & send Other Comments

5 Answers   Jindal,

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What are types of encoders?

19 Answers   ITC Infotech, UFO, Wipro,

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What is corona ? Mention its positve effects .

1 Answers  

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Re: What do you mean by Power factor of a generator? Power factor purely depends on the load (wether inductive, reactive or unity) then what does the Power factor mentioned on the generator nameplate means?

2 Answers  

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Why is negative feedback invariably preferred in closed loop system?

0 Answers  

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why the starting current of a motor is high?

3 Answers   ITC Infotech,

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What is RTCC panel and why it is required

31 Answers   RTCC, Tivoli Grand,

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