We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power through this transformer. When we export power, the PF will be depend on GRID PF & when we import power the PF will be depend on our load PF. but the problem is that,when neither we export nor import but our 33KV vCB is in close position,our meter read the power factor 0.14 to 0.25 at that moment. So how can be we improve the power factor at that moment.

3 Answers  

---

What is the use of IGBT in UPS & its working??????????

5 Answers   Reliance,

---

what happen if we supply ac to the field of a alternator?

5 Answers  

---

WHAT WILL HAPPEN IF WE START A MOTOR WITH STAR & IT IS RUNNING WITH STAR CONNECTION INSTEAD OF DELTA

3 Answers  

---

If we need 4c× 50mm sq cable but it's not available so we can pull 4c×25mm sq two cables?

0 Answers  

---

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

0 Answers  

---

i need mat lab program to find out the transmission line losses,regulation and losses

0 Answers   AITM,

---

why the transformer is not operates on two phase?

1 Answers   APGenco, Atkins, FFBL,

---

what is d meaning of inrush current of a trafo ? how u can calculate this ?

1 Answers   Jindal,

---

1. Why a DC motor starter is called 3 point starter

21 Answers   ABB, CG, College School Exams Tests, Crompton Greaves, Infosys, Siva,

---

Why is tan-delta test and capacitor measurement done on alternator?

0 Answers   TD Power Systems,

---

WHY SPEAKER OUTPUT IN WATTS??

2 Answers  

---