Answer / k.prakashchandra

LBB relay is for failure of breaker to trip , and back up protection relay ( usually EM ) is for failure of main relay ( usually electronic )

what is the method of earthing of a transformer using electrodes?

1 Answers  

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what will be the effect of leading power factor on turbogenerator (and system) that is running parallel with other TG.

1 Answers  

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Why power factor does not occur in DG set ?

6 Answers  

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R=*¶ l/a

1 Answers  

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How RTCC panel is working and give single line diagram for RTCC with transformer?

1 Answers   AB Associates,

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Why 66KV is step down to 11KV and then 433v, not directly 66KV to 433v ?

2 Answers  

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what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . please reply..............

9 Answers   NTPC,

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what is RTD? what is THERMOCOUPLE? What is difference between it?

2 Answers   Bhel,

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How much width of the land shall have to be left below the EHT line of 440 kv as per the rule. i am told that a corridor of 35 M width is to be left free below 220 kv line. please confirm

1 Answers  

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why do we prefer alternating current in india where as in USA prefers DC?

3 Answers   Bhel, GMR, Texmo,

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there are a transformer and a motor. both are connected to 3phase, 415 Volt, 50Hz power supply. Both are working with induction principles. Then, why, motor is rotating and transformer is not rotating.

8 Answers  

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