u.v.v.satyanarayana


{ City } tadepalligudem
< Country > india
* Profession *
User No # 59552
Total Questions Posted # 1
Total Answers Posted # 6

Total Answers Posted for My Questions # 4
Total Views for My Questions # 4851

Users Marked my Answers as Correct # 16
Users Marked my Answers as Wrong # 8
Questions / { u.v.v.satyanarayana }
Questions Answers Category Views Company eMail

why our power production in multiple of 11, in strictlly asking why our o/p voltage of alternators is 11kv only and whynot graterthan 15 and016KV?

 4 Electrical Engineering 4851



Answers / { u.v.v.satyanarayana }

Question { 4001 }

what is the d/f b/w dol & star delta starter.


Answer

dol is a direct on line starter means less than 5h.p
machines consists of roughed construction so resistance is
high.so there is no use of starting current limiting.
but in case of high rating motors starters
necessaty.

Is This Answer Correct ?    2 Yes 0 No

Question { 7236 }

why capacitor is placed in fan


Answer

ofcours,RMS(rotatory magnetic field) can developed by min 2
phases,and also powerfactor improment.

Is This Answer Correct ?    2 Yes 0 No


Question { 3740 }

as ac supply is given 2 the transformer why it doesnot
depends upon powerfactor????


Answer

actually t/f has twotype losses,one is copper and another
is iron losses,so copper losses depends on current and iron
losses depends on voltage.

Is This Answer Correct ?    1 Yes 1 No

Question { 5937 }

how to calculate H.P of a moter from speed of a moter?


Answer

if we want to calculate the h.p of motor, it is neccesary
to find the anglervelocity(w) and torue.

Is This Answer Correct ?    1 Yes 3 No

Question { 4564 }

How power factor of a transformer is calculated


Answer

actually transformer rating is in KVA. so powerfactor is
not come across t/f,because total loss depends on voltage
and current only. generally p.f is unity.

Is This Answer Correct ?    9 Yes 1 No

Question { 3553 }

in a refinery one motor is suddenly stoped. what
will do
how can i findout the problem explain step by step


Answer

first of all cheak if any opencircuit occure than chek
stator wdg are shortcircuit

Is This Answer Correct ?    1 Yes 3 No