parul


{ City }
< Country > india
* Profession *
User No # 37155
Total Questions Posted # 0
Total Answers Posted # 6

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Total Views for My Questions # 0

Users Marked my Answers as Correct # 40
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Questions / { parul }
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Answers / { parul }

Question { ABB, 8312 }

what is numerical relay explain its operation


Answer

numerical relay is a microprocessor based relay ...it works
according to the program written using microprocessor.

Is This Answer Correct ?    6 Yes 1 No

Question { 4628 }

Please help me.What are the difference between two wire,
3wire, and 4 wire in electric meter?


Answer

two wire is used for single phase supply , three wire may
represent 1 phase , 2 phase or 3 phase ..... 4 wire may show
2 phase or 3 phase....depending upon the pf of the load and
voltage required to achieve ,these are used ..

Is This Answer Correct ?    0 Yes 2 No


Question { 3156 }

How to work to the x'mer as a
induction motor?


Answer

xmer and induction motor work on same basic principle of
mutual induction but induction motor is rotating xmer & xmer
is stationary...so the can never substitute each other..

Is This Answer Correct ?    2 Yes 2 No

Question { CS, 5247 }

Is there thumb rule to calculate how many Insulators to be
used for Transmission line of different volatges


Answer

normally in case of suspension type insulators ,each
insulator is designed for particular rating like 11 kv ..so
for 33kv transmission we need 3 such insulators.

Is This Answer Correct ?    5 Yes 2 No

Question { 8597 }

what is the difference between isolator and circuit breaker


Answer

isolator is a knife switch and it is used to open a circuit
under no load.such switches are used in the both sides of
the circuit breakers so that repair and replacement of the
circuit breakers could be done.they are never opened when
current is flowing in the line.....

circuit breaker is an equipmnet which can make or break
contacts under load ,no load or fault conditionsrelay is
always used with circuit breaker ..relay detects the fault
and circuit breakers does the function of current interruption..

Is This Answer Correct ?    19 Yes 4 No

Question { 4594 }

why the the phase transformer's nuetral has been grounded


Answer

neutral is grounded so that if there is any imbalance in
currents then the phasor difference of those currents reach
the ground ...means it is used for protection of
devices...in case there is imbalance in the currents then
the devices supplied by the transformer may get burned..

Is This Answer Correct ?    8 Yes 1 No