Answer / h s sandhu

Since there is oil in the transformer and with the load increasing the temp of oil increases because of more current flowing in HT/Lt windings .We measure the temp of oil with the max limit st as per Is of the transformer.( 90deg above ambient )

Answer / jithendra

 Transformer oil is a medium for Transformer winding to decrease the winding temperature when load increases simultaneously winding temperature increases, so oil is used & also it is insulated oil.

Answer / rutulsoni

in trasformer there is increase in temprature with increase load.we measured temp of transformer to measured insulation resistance of device.it shoud not excedd above 85 C in oil tank and shoud not exceed above 95 C between winding...is this right? pls give me feed back

WE HAVE A PROBLEM THAT THE MAIN DRIVE OF OUR CEMENT MILL HAS AN EARTHING PROBLEM?TWO OF STATOR WINDINGS INSULATION HAS BEEN COLLAPSED DUE TO AGING PROBLEM.THE PHASES HAVE BEEN BYPASSED AND NOW THE LOAD HAS BEEN INCREASED.WE CAN'T REPLACE THE MOTOR.KINDLY HELP ME BY GIVING SUGGESTION THAT HOW TO MAINTAIN THE STARTING TORQUE AND CURRENT FOR HIGH LOADS.

1 Answers   ACC,

---

what is the generation action and motoring action?

3 Answers  

---

Why do not we prefer non conventional sources of energy to conventional sources?

0 Answers   Nabard,

---

distribution is maximum done by a)radial b)network c) parallel d)b & c

0 Answers  

---

If We are converting the SINGLE PHASE AC into THREE PHASE AC by using STATIC CONVERTERS , then How do we bring the frequency to 50 hz??

2 Answers  

---

what is the difference between surge protection capacitor and surge arrestor

0 Answers   NCS, NCS Sugars,

---

What do you mean by screen of power cables?

0 Answers  

---

what is kvarh? Please define it With calculation General motors ?

0 Answers  

---

My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

0 Answers  

---

when i am going to take trail on a 3ph sq.i/m motor 5.5kw, i observed that RPM of the motor is very low as compared to the rated RPM and also it rotates in clockwise in first ON command,and anticlock wise in second ON command. finally i observed that on phase is no available . but iam not clear about, why the motor is rotates in both directions without any phase interchanging.pls answer to my question.

1 Answers  

---

What are the rating wise protections required for Generators from 600KVA to 2000KVA

3 Answers  

---

What are :- AC Distribution Board (Single & Double Front) DC Distribution Boards Distribution Board LT Breaker Panel.

0 Answers  

---