The transformer which is smallest in size is and how to calculate that? The op

The transformer which is smallest in size is and how to
calculate that? The options are

100 KVA, 50 Hz
100 KVa, 100 Hz
100 KVA, 25 Hz
50KVA, 25 HZ

Question Posted / krish

4 Answers
15373 Views
Ranbaxy, Zee Laboratories, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

The transformer which is smallest in size is and how to calculate that? The options are 100 KV..

Answer / wareagle

The transformer equation
E = 4.44(f)(B)(N)(a) where E is the voltage in the winding
either primary or secondary, f is the frequency, B is the
flux density in the core, N are the number of turns on the
winding, and a is the cross area of the core. At higher
frequencies the number of winding turns N is reduced. This
formula follows from the Faraday formula, E = N dθ/dt and θ
= B(a).
This formula is why switching power supplies use a much
higher frequency (thousands of hertz) than 60 hertz, they
use smaller transformers that don't need as much wire as
transformers operating at 60 hertz. See Wikipedia for the
transformer website:
http://en.wikipedia.org/wiki/Transformer
Source(s):
Wikipedia for the transformer equation
100 kva 100 hz

Is This Answer Correct ?

9 Yes

1 No

The transformer which is smallest in size is and how to calculate that? The options are 100 KV..

Answer / vikram

100Kva 100hz.

Is This Answer Correct ?

4 Yes

0 No

The transformer which is smallest in size is and how to calculate that? The options are 100 KV..

Answer / kaliraj

50kvA, 25HZ

Is This Answer Correct ?

5 Yes

5 No

The transformer which is smallest in size is and how to calculate that? The options are 100 KV..

Answer / ankit.srivastav24

100kva 50 Hz..

Is This Answer Correct ?

2 Yes

4 No

Post New Answer

More Electrical Engineering Interview Questions

how to reduce the power consumption in office ?

6 Answers

what happen if transformer neutral not earth

2 Answers

How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

0 Answers npcc,

when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)

0 Answers

what happen if the parallel generator phase angle shift by 1 degree in manual mode

0 Answers EEEC, MEC,

what is the difference between ac and dc hipo test of cable?

2 Answers

some times voltage does not built in small generators why ?

2 Answers

We have Diesel generator of 200KW. fuel consumption is always same,even connected light load or full load. Is it right?

0 Answers ARDE,

In a parallel circuit dc circuit with two resistors, if you know the voltage, amperage, and one resistors ohms, what formula is used to find the second resistors ohms?

6 Answers

Dear sir, please tell me how many day use CTPT transformer

1 Answers Daya Engineering Works,

what is R Core Transformer. how it differs from normal transformers. dont search in net and post the answer.

0 Answers

what is pole slip ?

4 Answers NTPC,

For more Electrical Engineering Interview Questions Click Here