Answer / shailesh patil

MPCB is a device which gives protection to motor against Overload, Short Circuit & Single Phasing.

But Overload Relay is a device which gives protection to motor against Overload Load & single Phasing only.

in wind mill use 2100 kw asychronous generator ( induction generator ) rotor voltage : 3300,stator voltage : 690, rpm : 1511 type : MRL063E04 ' we check rotor resistance magger value found following. R-EARTH - 00 M.OHM,Y-EARTH-34 M.OHM,B-EARTH- 33M.OHM R-Y: 31 M.OHM, Y-B: 00 M.OHM,B-R :33 M.OHM HOW CAN I TAKE DECISION?pls ans. quickly

0 Answers   Shaifali Rolls,

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Why heat produce in AC machine higher than DC machine?

2 Answers  

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why semicondoctor use in HT cable?

1 Answers  

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Why a transformer Noise during its running condition ?

8 Answers   NTPC,

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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one split ac how can told of this ac which Tr tell me us

0 Answers   Wipro,

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how diside ct mf exmp.200/5 ct

0 Answers  

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Can we use LT(150 sq. mm) cable in place of HT (120 sq.mm.) cable.?

1 Answers  

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Is it possible to connect a dYN1 transformer in parallel with a YNd11 transformer.

4 Answers  

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what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

0 Answers   ABB, Siemens,

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Why the earth to phase voltage is high 250 compare to other two phases

0 Answers  

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what is phase voltage and phase current what is line current and line phase

3 Answers   L&T,

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