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
15584 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

In which iron losses is higher induction motor /transformer

1 Answers

What is the Nyquist criterion regarding control systems?

0 Answers GE,

what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?

0 Answers

What will happen if 230V DC motor connected to 230V AC Supply?

15 Answers Ashok Leyland, BOC, JSW, ONGC, RRB, TRB,

We have ONLINE UPS 15KvA (3PHASE 440V I/P,3PHASE O/P,440V) I want to step down from 440 to 220 V What to do. Pl. suggest with specification.

1 Answers ARDE,

HT/LT TRANSFORMER TEST?

0 Answers

What is the difference between 11kv/110v & 33kv/110v ? If both 11 & 33KV give 110v then what is the diiference ?

1 Answers

DG use Rating KVA why

1 Answers

how to calculate optimum loading for transformer?