Answer / gopal manda

the principle of excitation is that,it is same as low
voltage dc generator,to generate high voltage,we need very
strength static magnetic field,which we creat by external
dc voltage, produce by ac or dc generator.so we excite the
fieldwinding of alternator.

What is the formula to calculate the rating of a thermal over load relay

2 Answers  

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Re: how to calculate diesel consumption of a D.G.Set? Answer # 1 We can not calculate the diesel comsumption...depending upon load it will conume the diesel...suppose the 1500kva D.G is running and the load is 1000kw means it will consume 150-200 liters per hour....

6 Answers   Cipla,

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if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.

0 Answers  

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in a silicon diode we can measure .7v in a voltmeter.but why we can't use this voltage for using?

0 Answers  

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Is there any problem about which the drive (inverter) doesn't show/display the alarm and/or fault but instead of this , it doesn't work ? I want to know that could there be any kind of problem in the drive when the drive doesn't display the alarm and/or fault ?

0 Answers   Siemens,

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difference between shunt coil and tripping coil

8 Answers   GE,

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What is gross error?

0 Answers  

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What happens when DC supply is given to transformer

4 Answers   CESC, IBM,

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what is the difference between upper impedance and lower impedance distance relay?

3 Answers   Havells, Power Grid,

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how to identify small motor and generator?

1 Answers  

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How much depth we will take in 33kv sub station and why.

0 Answers  

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DGs fuel and lube oil filters are not equal to one another.Why it is so.For example one MTU enginee fuel filter is one and lube oil filter-02nos other DGs are more.Please explain

1 Answers  

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