Answer / ram kumar

There is 2phase supply, but it is dedicated only to the railways not for commercial and domestic use. and about 4phase, it's not Indian standards, and more conductors are required and structure of transmission tower will be huge in case for 4phase.

Answer / naresh

As Ram kumar says i.e. there is more no. of conductor will
required for more no. of phases is correct,and also for
large load we require more power which can be generated by
only three phase motor and a large kw motor cant be started
by single, two and foure phases, it required leading or
laging power which is only possible with three phase.

Answer / shal

Use root 3 foe each phase

what will be happened when a single phase motor is supplied by the dc supply

3 Answers  

---

What are methods to avoid the inrush current at the time of starting of power transformer ?

8 Answers   Wipro,

---

What is the working principle of ceiling fan?

6 Answers   Indian Navy,

---

what is the setting of locked rotor in HT motor ? (answer expecting in percentage)

0 Answers  

---

what is tpmo switch

3 Answers  

---

---

what is torque & how it will produce & what is the formula for that.

2 Answers  

---

what is derated current of power cable & what is formule to find derated current?

1 Answers   Thermon,

---

we use Dyn11 trafo for distribution purpose, if it`s possible for replacing Dyn1. if it`s change means what will happen?

1 Answers  

---

Why the capcitor to be discharged after put in to operation & why not inductor though the both elements stores energy?

3 Answers  

---

From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?

0 Answers  

---

In dc ckt. 24v or 110v, which one is more efficient and why?

0 Answers  

---

How we calculate the current carrying capacity of H.T. cabel?

0 Answers   Bhel,

---