Answer Posted / g.v.suresh kumar

BUCHLOZ RELAY IS USED FOR INCIPITENT FAULTS
PERCENTAGE DIFFERENTIAL RELAY IS USED FOR INTERNAL FAULTS
AND EXTERNAL FAULTS

Why the power generated in dams is complex power? Why the generators in dams cannot produce Real power directly (i.e power which has zero reactive part)?

1784

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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?

2322

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what are the different kind of cables used for transmissions?

1242

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what is auto re-closer?

2640

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How i can calculate current of cable according to ares?

2003

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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3

2022

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Where I can get the sample question for post of Junior engineer electrical-II For RRB Bhubaneswar.

2183

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one electromagnet is called

1928

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Circuit diagram of tube light without starter using electrical choke

4132

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what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

1998

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How can eliminate noise problem inside temperature controller temp. variation due to contactor chattering problem.

1630

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why lightning arrestor are made in two stack of insulator but why not cvt

2082

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hello friends..... any one have papers or any study materials?sail ,hpcl...?

1889

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75 kw motor take 45 amp in no load delta in star 10 amp but in load it will take 160 amp but IR velue of winding above 500 at 1kw ph to earth and ph to ph. what problem it should be?

3728

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How to calculate mf when meter equipment and meter are connected

1734

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