Answer / k.prakashchandra

The output of earth tester is AC

Answer / karthik

DC Motor, DC Lamp, etc.,

-----------means a source which can supply a constant voltage to aload irrespective of the valu of load resistance.

2 Answers  

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How to calculate the fuse rating depend upon the DC circuit?

0 Answers  

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what do you mean by synchronous speed of a three phase induction motor?

5 Answers   FlexPoint,

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What is gain margin?

0 Answers  

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How do i calculate sizing of transformer on didstrubution load for high rise building.What should be MVA Rating of MV Panel feding by 122 kv.

2 Answers  

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The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group YNyno. and impedance is 10.07%. As per the calculation the secondary current is 1312.2Amps. The maximum fault current the transformer should sustain is 13.030KA. How many times the transformer should sustain the maximum short circuit current of 13.030KA over a period up 1 Year. The transformer is repaired one & 10 Years old.

1 Answers  

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What is the need of earthing transformer for delta side of a transformer. (Think of a line section between a star/delta transformer at a grid substation and delta/star transformer at a village. An earthing transformer is there at the delta side of the star/delta transformer at grid substation). As there are no ground reference there will not be fault current if a one phase is grounded. Further L-L phase will be sensed by the primary side of star/delta transformer as a L-G fault. So why an earthing transformer is required at delta side

0 Answers   CEB,

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why neutral used in three phase motor connection?

3 Answers   BEL,

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which braking is used in traction motor and what is its working send at mukeskumar27@hotmail.com

2 Answers  

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what are eddy currents

2 Answers  

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What is the difference between line Distance protection and Line Earth Fault Protection?

1 Answers  

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friends., why celling fan rotate cockwise direction and wall fan anticickwise direction ?

3 Answers  

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