Answer / chandan kumar

hysterisis losses increases bcoz high grade steel is solenly
used in core material to reduce hysterisis losses while
laminated core is used to reduce eddy current losses.and
copper losses occur due to resistences of primary and
secondary windings....

Answer / somu0507

The main purpose of iron core is to provide low reluctance path.The copper has much lower permeability(approximately equal to 1) than iron and has comparatively higher conductivity. The following effects will occur if copper is used instead of Iron (for same supply of voltage and frequency):
1-It can be seen from voltage equation of the transformer that if supply voltage and frequency is constant then require flux is constant. to produce same flux, very high magnatising current will be required (as copper has very high reluctance than iron) which will result in VERY HIGH COPPER LOSSES in primary winding. Consequently the primary winding may get burn.
2- As the copper has higher conductivity HIGHER EDDY CURRENT LOSSES will occur.
2- Being a non magnetic material, Copper has very narrow Hysteresis loop, hence HYSTERESIS LOSSES WILL BE LESS.

Answer / anil kumar

the main purpose of core is to proviod low resis path .to that steel is used. if we use copper,hence large amont of eddy currets will produce causes short circuit.hence eddy loss plays main role.

Answer / saikrishna

if transformer core is made up of copper the conductivity of
copper will be more and hence eddy currents will flow
through core therefore eddy current losses will increases.

Answer / mangal singh

copper losses..........

PLease anyone can tell me CTUM-15 specification?

1 Answers   Gilbert Maxwell,

---

Draw the DOL starter and star delta starter drawing?

0 Answers   Danfoss,

---

why we define potections of Tourbo generator in Class A & B.

1 Answers   GIL,

---

WHAT IS counter flux IN CT?

0 Answers  

---

what is the difference between ac and dc?which one is more efficient?and what r their advantages

1 Answers  

---

---

What is the better way of passing 400 amp from sending end to receiving end ? By overhead line or underground cable and why ? if underground cable then how much depth require ?

1 Answers   Aditya Birla, HCL,

---

What will happen if i used 11KV earth ht kit to 11 KV / 11 KV cable termination?

0 Answers  

---

What is LMU and LMDU. in PLCC communication of 132 kv transmission line. is it possible to use only one LMU with out LMDU ?

1 Answers  

---

CAN ANYBODY PLEASE TELL ME HOW TO DESIGN A SERIES REACTOR FOR LIMITING SHORT CIRCUIT FAULT CURRENT??

0 Answers  

---

Can anybody tell me what the breakdown voltage is for air and what it is for transformer oil please?

4 Answers   Pooja Cables,

---

what does the word synchronous mean in 'synchronous machine'

3 Answers  

---

how the length effects the ampacity of the cable? if a cable is carrying a current of 100A for 50m length then what will the effect on current if we double the length?

2 Answers  

---