sonu pal


{ City } meerut
< Country > india
* Profession * testing engineer
User No # 50693
Total Questions Posted # 3
Total Answers Posted # 9

Total Answers Posted for My Questions # 2
Total Views for My Questions # 16260

Users Marked my Answers as Correct # 267
Users Marked my Answers as Wrong # 35
Questions / { sonu pal }
Questions Answers Category Views Company eMail

why does connected a indutor with mnsformeretering core of current transformer ?

 Electrical Engineering 1631

The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?

 Electrical Engineering 1509

If i=10+10sin314t then find the rms and average value of current with explain?

Heptacare, TCS,

2 Electrical Engineering 13120



Answers / { sonu pal }

Question { 7120 }

what is alternater?


Answer

alternater does generat electrcity of AC form.

Is This Answer Correct ?    1 Yes 4 No

Question { 4817 }

why dc did not flows to earth?


Answer

if dc will flow to earth,there will be cause of fault.

Is This Answer Correct ?    2 Yes 13 No


Question { Atomic Energy Commission, 6602 }

what are the different type of transformers available in
markets???


Answer

1. power transformer
2. Distribution transformer

Is This Answer Correct ?    2 Yes 2 No

Question { 10769 }

i asked a funny question in Electrical

ohms law V=IR
in const temp voltage is directly proportional to current

Power p=VI cos@
in that formula Voltage is indirectly proportional to
current
Try to give me the fact what is happening in Electrical..
contact Thanigai_1984@yahoo.co.in


Answer

ratio of v & i is constant according to v=ir anp p=vi. it
is concept of both formula.

Is This Answer Correct ?    2 Yes 2 No

Question { DVC, 4258 }

In PT the coil is wound on?


Answer

PT is like a cell type transformer.
it wound on middle limb of assemle core.

Is This Answer Correct ?    4 Yes 1 No

Question { 5976 }

what is the meaning of knee point in current transformer and
how to calculate?


Answer

That sinusoidal voltage of rated frequency applied to the secondary terminals of the CT, which when increase by 10 %, cause the exciting current to increase by 50%.

Knee point voltage, V= K.Is (Rct+Rb)
K= is a parameter to be specified by customer which depends on the system fault,
Is= secondry current
Rct= secondry winding resistance at 75 deg C
Rb= impedance of secondry circuit.

Is This Answer Correct ?    1 Yes 0 No

Question { 37436 }

One B.O.T Unit ??


Answer

1 kWh = 1 BOT Unit

Is This Answer Correct ?    251 Yes 13 No

Question { GE, 3732 }

In power plants the reading changes abruptly to give value
(MW -25) (MVAR -15)
What are the reasons for this?
What is the solution?


Answer

MW is active power and MVAR is reactive power.

Active power, P= V.I.cosΦ
Reactive Power, Q= V.I.sinΦ

Is This Answer Correct ?    2 Yes 0 No

Question { Orion, 2960 }

I am new guy as an electrical engr. in a 100MW HFO based
power project. I am in operations division. I have noticed
from last few days, my supervisor sends the last 24 hours
energy generation calculation to my plant manager. I have
noticed, he calculated last 24 hour's generated energy
differences in KWH then he multiplied it with a multiplying
factor 960. for example:

total difference =2.685 KWH*960= 2577.6 MWH.

but he does not not know what is multiplying factor 960??
can anybody explain it??


Answer

First of all you will find CT & PT ratio using for this
power measurement then you can find MF what your supervisor
apply.

Suppose that---
you are using a 33 kV CT having ratio 50/1 Amp. and 33 kV
PT. so multiplying factor= 50/1 * 33000/110 = 15000 (in watt)



Is This Answer Correct ?    2 Yes 0 No