Answer / bijoy

if it is 3 phase then just change two phase.it will move
opposite direction of earlier direction.

Answer / guest

In single phase by changing the current
direction of any one winding, either the
stator or rotor winding.
In 3phase, by replacing any to two phase
terminals, the direction will change

Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you

2 Answers  

---

how to wiring 20 hp motor get completated?

1 Answers   Alchemist,

---

Which motor has more efficiency ;Synchoronous or Induction motor ?

4 Answers   TATA,

---

I am an electrical engg and has got selected in wipro should i go there now or try in some core company ?

3 Answers   Wipro,

---

what is the function of Droop CT and where it is used?

3 Answers   Lanco,

---

What happens if a +vely charged particle is placed in the centre of a room and assume that the north side wall is having magnetised with north polarity and south side wall is magnetised with south polarity. In which direction the particle will move

5 Answers   BSNL,

---

present we are having 0.8pf but I want increase it up to 0.99 so what is the formula for it and how can i calculate?

3 Answers   ABB,

---

What is double throw isolator and single throw Isolator.

1 Answers   KSEB, L&T, Siemens,

---

The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?

0 Answers  

---

hot water tank,top element 240v across,the bottom 120v across,why?

1 Answers  

---

what is transient stability analysis means?

0 Answers  

---

why there is a phase shift lies between primary and secondary voltages of a transformer?

7 Answers   Mecon,

---