Answer / parag

Function of the cooling tubes is basically to maintain the
working tempareture of the transformer. it's basically used
to dissipate heat.there are 2 types of cooling
1.natural cooling
2.forced cooling
Natural Cooling occurs when the transformer oil flows
through the 'fins'of the transformer.the oil comes into
contact with atmospheric temapareture which is less than
that of the oil and the transformer oil gets cooled.
Forced Cooling is done by the fans provided outside the
transformer to act as coolant.

Answer / jagadisha.n bmsit

Cooling tubes are used in transformer to increase heat
dissipation in transformer, heat is produced in transformer
due to losses(copper and iron loss. in case of high power
rating transformer normal plain surface is not enough to
dissipate the heat so tubes r used to dissipate the heat.
heat dissipation is not proportional to dia of tubes because
of screened surface

Answer / rvg

Cooling tubes are used for forced cooling for the transformer

Answer / v jyothi kumar

heat is produced in a transformer winding due to iron and
copper losses. this heat is absorved by oil.cooling tubes
are used for transformer oil cooling and coolig systems are
two types they are
1. Natural cooling.
2. forced drought cooling.

why the measure taken in multiplication factor of 11for voltage like.. 110V,220V,440V,1.1KV,6.6KV,11KV,33KV,66KV,110KV,132KV,220KV

1 Answers   Vijai Electricals,

---

CAN ANYBODY EXPLAIN WHAT ACTUALLY MEAN BY THE PHASE DEFFRENCE? R,L,C CIRCUITS?

5 Answers  

---

What is the method to solve circuit using source transformation?

0 Answers  

---

Why we Do not connect the windings of the motor in delta? & what would happen if we do that? I mean the winding themselves not the three lines that are coming to the motor?

1 Answers  

---

How many earthing pits are requier to disapper the surge current of one lighting arrester.

3 Answers  

---

---

What is a LBB protection and why it is used?

2 Answers   Gridco,

---

If current and resistance in a circuit is increased by 20%, what will happen to its voltage drop??

4 Answers  

---

Difference between rating factor of cable and derating factor of cable?

0 Answers  

---

what is S.D.F stands for ? (S.D.F unit 80 amp , TPN )

6 Answers  

---

how to find three phase complex power in per unit and MVA?

0 Answers  

---

what is the KVA formula of a three phase transformer

5 Answers  

---

hi guys please tell me the procedure for mesuring the coil resistance of 3ph induction motor?

0 Answers  

---