kaji mustufa


{ City } anand
< Country > india
* Profession * engineering student
User No # 76821
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Answers / { kaji mustufa }

Question { NTPC, 27092 }

Why we didn’t feel electric shock in an electric train ??


Answer

As the source used in trains is from overhead lines and it makes contact with PENTOGRAPH contactor but pentograph contactor is insulated from coaches by mounting insulator discs on the top of train..
summerising, electric train and source (i.e. 25kV dc) is electricaly not connected.. Hence no shock....

Is This Answer Correct ?    7 Yes 2 No

Question { Essar, 65276 }

what do you mean by the "bay" in a switchyard?
how to determine exact number of bays in a substation?


Answer

It is mainly assembly of three componenets:
1.current transformer
2.circuit breaker and
3.isolator.
various Interconnections of these three components in switchyard forms a BAY.

Is This Answer Correct ?    48 Yes 6 No