Answer / jitender kotwal

Single phase motors opreates on netural and line and are
not self started as they have pulasting emf. where as the
three phase motors opreates on three phases and are self
started and are used in industrial applications two phase
motors are very reared used

Answer / jain c

for producing rotating magnetic field we need minimum two
phases. In single phase motor, we are calling single phase
motor but we are splitting the single phase into two phases
by capacitor. The phase angle between that two is 90 degree.
In case of three phase motor the R,Y,B phases produces
rotating magnetic field. The angle between three phases is
120 degree.

What is broken wire condition in transmission line?

2 Answers   TATA,

---

how many joint can done in HT line and what is life of the joint

0 Answers   Micro Labs, Reliance,

---

what's the meaning of the negative going half cycle in the circuit containing a bulb and a switch in series with a input ac source. i mean what happens in the -ve cycle. the dir. of current changes or any other thing. if dir. changes then why we use fuse in only phase wire.

2 Answers  

---

To have variable speeds we use a. Induction motor b. Traction motor c. Shunt motor

1 Answers  

---

how much current and power in watts can be carry by 2.5^2mm cu wire and 4 core 10^2mm Al cable?

1 Answers  

---

What is the difference between circuit breaker and isolator

0 Answers  

---

Need help. 3 phase system. Neutral line arced and melted upon connection of connector with 3 phase power. Why would that happen?

4 Answers  

---

Normally the starter used to reduce the starting current.but the dol starter do not it,so why we use it?

4 Answers  

---

What are the Application of CT & PT ?

2 Answers  

---

what is excitation system explain in detail with its working?

1 Answers   Toshiba,

---

What will hapen if we connect more capacitors than required for powerfactor control? Exactly what will be the effect on power system?

2 Answers   Mandovi Pellets,

---

Why do we twist copper to make cable?

3 Answers   Bhel, Integrated, MR Cables,

---