how the rotating magnetic fieldis produced in induction machines??? give the correct explanation.is there any mathematical expression for the same?

1 Answers  

---

what is the meaning of harmonic in AC waves and when which are prduce and what is the effects on line and give any other information about harmonics

1 Answers  

---

what is grounding & what is the value of groumding rod 2.5m?

3 Answers  

---

How to calculate flow of water delivered by pump when pressure & size of pipe line is given

0 Answers   Knight Frank,

---

what is the need of reactor in between the transmission line?..like powergrid like that..

5 Answers   Delta Roto Tech,

---

what is the clearance time circuit breakr?

1 Answers  

---

current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

0 Answers  

---

What is meant by sag?

0 Answers  

---

waht is the working principle of saft starter & what is the difference in vfd & saft starter

2 Answers   Cipla,

---

1. Can a 12v DC choke operate a 60v/12w PL lamp ? 2. Can a 230v ballast fire / operate a 60v/12w PL lamps.

0 Answers   ICS Integrated Computer Solutions,

---

CONSIDER A 415V/200V STEP DOWN TRANSFORMER.CAN WE USE USE IT AS STEP UP TRANSFORMER BY GIVING 200V IN SECONDARY AND TAKING OUTPUT FROM PRIMARY?

3 Answers  

---

What do you meant by soft start?

1 Answers  

---