hi frnds.....anyone get any reply from HPCL. I HAVN'T.....B,COS written will b on FEB 17 th.

1 Answers   HPCL,

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Is there any other method of damping the oscillation in a synchronous motor other than using damper winding and if yes what is it?

2 Answers   IOCL,

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what happens when we give supply to the secondary of a transformer ?? for example 415v(pri)/110v(sec)

2 Answers  

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what r PID controllers?why they r used?what is there purpose?plz Explain in detail

0 Answers  

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234 MVA Generator 3 phase Short circuit current Values required? Gen set Rating-234 MVA, Gen Voltage-18kv, PF;0.8, Xdv:23.5 %, Transformer Rating-18/380KV, 680MVA,Yndd1 two winding, Step up TR, ZT:35.50 %,X/R 4.33 Gen CB Position, CB open ,Disconnected open, Generator Running Voltage 18 Kv, Bi mistakes generator side earth switch Closed during that time short circuit current level in 3 Phase required, and how to test on site 234MVA Generator Short circuit current,

0 Answers   Jubail O&M,

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What is corona ? Mention its positve effects .

1 Answers  

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What is CBCT ? Why & Where it is used?

14 Answers   BCT,

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how many types of cbs?with pcific ratings?

1 Answers   Bhel,

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The coils having selfinductancs 10mh and15mh,effective inductance 40mh when connected in series aiding. what will be the equivalent inductance if we connect them in series opposing?

1 Answers   BSNL,

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the power consumption of perminant magnet moving coil?

1 Answers  

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What is the breaking capacity of transformer and how can we calculate the breaking capacity of tranformer

0 Answers   Siemens,

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What is the difference between MCB and Earth MCB? What is the working principal of MCB?

2 Answers  

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