Answer / naresh kinger

First calculate the short circuit current on the secondry
side. It will be = FLC/percentage inpedence X 100.

Now you can calculate primary current using tranformer
ratio.

Answer / naresh kinger

It will be 139/4.7 x 100 = 3415 AMP on secondry side.

Since ratio is 1/1, primary current will also be 3415 AMP.

Hope it clear now. For any doubt, you can write me at
n.k.kinger@gmail.com

Answer / ravishankar

flc is 139amps .then impedance of the transformer is 4.07
then it is 34.15 amps.ratio is 1:1
is the primary current34.15?

to operate air conditioner of 1.5ton what power of generator is required

1 Answers   Bharat,

---

Why the power factor of the alternator in power plant is kept .8 lagging. Can't we maintain it at 1.

3 Answers  

---

what is earthed and inearthed cable or system?

1 Answers   CCCL, L&T,

---

(1)Electrical power is generated in KV, power consunmed is in MW and the transformers used are in KVA. How is KVA converted to MW as power being consumed by the consumers? (2)What is vector group of a transformer?

1 Answers  

---

what is impedence (Z) of transformer, what indicate in transformer , which perameter indicate in transformer

5 Answers   CTS, Suzlon,

---

which subject is better to tell when hr asks the area of interest?..

0 Answers  

---

why ht motor connection in star

10 Answers   Suzlon,

---

What do you mean by eddy current loss?

1 Answers  

---

what will happen if we directly give supply to rotor of a induction motor?

1 Answers  

---

What is the use of Surge Capacitor in LAVT?

1 Answers   Snipe Engineers,

---

what is destructive and non-destructive testing of welding

0 Answers  

---

A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

0 Answers  

---