what is the function of a commutator in a dc generator?

14 Answers   College School Exams Tests, NTPC, TCS,

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. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?

0 Answers  

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A powerplant has 8 gensets operating in grid parallel mode. In one genset sometimes there is pf variation and kvar variation. The plant operates in pf mode. When this variation is observed the load is stable, voltage is also stable, freq and genset speed is also stable. How will you check the functioning of pf card. What shall be the ideal output vdc of the pfc, from there it is input to AVR?

0 Answers  

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What are the Steps for Testing of 20MVA (make:-CGL) Transformer? How many Test we have to do?

2 Answers   BSL,

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how is working the APFC when varying the load?

1 Answers  

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Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

0 Answers  

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i want bhel placement paper for electrical if anybody having pl send to my id kavitha867@myway.com immediately

0 Answers   Bhel,

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what is use of reactive power in ac ckt.

2 Answers  

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A 30KW motor running at 1450 rpm draws 56A, how would you determine if this is correct or not?

3 Answers  

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what is the need of capacitor in transmission lines?and how it works.

2 Answers   SCCL,

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what is the difference between real and reactive power? and what is the importance of these

3 Answers  

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What is the deffirant between EARTH, GROUND AND NUTRAL

4 Answers   TCS,

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