Answer / liladhar danej

VA BURDEN :
The apparent power of the secondary circuit in Volt-amperes expressed at the rated secondary current and at a specific power factor (0.8 for almost all standards)

knee VOLTAGE :
That point on the magnetizing curve where an increase of 10% in the flux density (voltage) causes an increase of 50% in the magnetizing force (current).

The ‘Knee Point Voltage’ (Vkp) is defined as the secondary voltage at which an increase of 10% produces an increase in magnetizing current of 50%. It is the secondary voltage above which the CT is near magnetic saturation.

Why we use circular(Stepped) cross section in transformer core?

0 Answers  

---

what is the difference between star and delta connection?

3 Answers  

---

how to decide the ratings of the busbar in electrification.give me the proper thumb rule or procedure

1 Answers   ABB,

---

while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?

0 Answers   Voltech,

---

power factor is max for which welding a.arc b.resistance c.gas

2 Answers   Bhel, HCL,

---

11000volt DG set carnt kaise banvay

0 Answers   AVK,

---

what is cogging in motors?

1 Answers  

---

why our power production in multiples of 11.

2 Answers   ABB, Infosys,

---

what do you mean by star point.its importance in ct & pt

2 Answers  

---

When i went to a interview the interviewer ask me a question for that i cant able to answer him if anyone knows answer me How will you design a capacitor bank for a plant? if my p.f is 0.6 i have to improve it to 0.9 or 1 what kind of steps i have to do? and is there any formula for calculating this?

2 Answers  

---

Purpose of lighting transformer.

2 Answers  

---

what is the potential difference between line and earth?

11 Answers  

---