s prashant


{ City } bhilai
< Country > india
* Profession * student
User No # 36614
Total Questions Posted # 0
Total Answers Posted # 10

Total Answers Posted for My Questions # 0
Total Views for My Questions # 0

Users Marked my Answers as Correct # 75
Users Marked my Answers as Wrong # 48
Questions / { s prashant }
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Answers / { s prashant }

Question { IOCL, 18729 }

what is the use of neutral?


Answer

neutral wire is there to pass zero sequence current during
fault condition

Is This Answer Correct ?    1 Yes 2 No

Question { Sail, 61398 }

why dc power can not be used in transformer?


Answer

the transformer winding burns when DC is applied

Is This Answer Correct ?    3 Yes 4 No


Question { KSEB, 29628 }

what will happen if the secondary of current transformer
kept open....


Answer

kva(pri)=kva(sec)

if sec is open then current is 0
therefore voltage is infinite
hence spark is produced and short circuit will happen

Is This Answer Correct ?    4 Yes 3 No

Question { Reliance, 29590 }

Why we are use 11KV / 22KV / 33KV / 66KV / 110KV / 230KV /
440KV this type of ratio. why cant we use other voltage
ratio like 54KV / 99KV et.,


Answer

these 11,22,33,66,110 figures are rms values

generated voltage = V (avg value)

then max value (3.14/2)V

rms value is {1/sqrt(2)}*max. value
=.707*1.57=1.11

Is This Answer Correct ?    14 Yes 11 No

Question { Jindal, 47207 }

what is the highest transmission voltage in india???


Answer

765 kv from sipat to seoni

Is This Answer Correct ?    15 Yes 1 No

Question { NTPC, 45184 }

Why Human body feel Electric shock ?? n in an Electric train
during running , We didnt feel any Shock ? why


Answer

even if we touch the live wire we don't get any shock
untill u r in air n while travelling in train the engine is
the only part touching the live wire. and the whole engine
is well insulated with the insulator above engine so no
chance of shock

Is This Answer Correct ?    16 Yes 10 No

Question { Genpact, 23517 }

why earthing is not required on transformer prymary winding
side ???


Answer

no one is correct
even also i don't know the answer.

Is This Answer Correct ?    6 Yes 8 No

Question { ONGC, 10872 }

why commutator is attached with only dc macine


Answer

actually in all rotating m/c ac is generated in rotor. and
commutator acts as invertor in motor and as rectifier in
generator

Is This Answer Correct ?    4 Yes 0 No

Question { BARC, 8173 }

what is inrush curent.


Answer

during starting of transformer actual flux change is twice
that of rated due which it gets saturated and high current
flows through the winding , dis current is called inrush
curent

Is This Answer Correct ?    6 Yes 5 No

Question { Piramal Healthcare, 12928 }

what is the effect of power factor in electrical circuit ?
if we mainten power factor near about unity (0.999) our
energy consumption Units increase or decrease?


Answer

with power factor at unity the power consumption will not
get effected . but for sure the production cost will
decrease with which the cost of consumption will decrease.

and how the production cost will decrease???

answer is with unity pf the real power will be v*i*cos@=v*i
which is actuall input power and now is usefull power.

Is This Answer Correct ?    6 Yes 4 No