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.

lllg,llg,ll,lg,lll which fault is severe and why?

10 Answers   COEP, GE, PSC,

---

What if the difference beween internal and exrteranal LBB?

0 Answers  

---

What is the operating principle of turbo-generator.

0 Answers  

---

Multi-step core is used in transformer to: A) Increase the output B) Decrease the cost of core material C) Decrease the cost of copper D) Increase the efficiency

1 Answers   Accenture,

---

hw to find transformer is in normal position? whether its in charged condition or not? except humming sound?

9 Answers   ABB,

---

---

What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.

0 Answers   PNG Power,

---

why need to be maintain power factor for industrial customer?

2 Answers  

---

why it is necessary to short and ground of a current transformer secondary side?

6 Answers   Ambuja,

---

what is RTD? what is THERMOCOUPLE? What is difference between it?

2 Answers   Bhel,

---

Do closed loops systems require manual input?

0 Answers   Ericsson,

---

What do you meant by slip power recovery?

1 Answers   PSEB,

---

WHAT IS FAULT CAPACITY OF HT MOTOR TERMINAL BLOCK? ANY BODY HAVE ANSWER PLZ....POST IT.

0 Answers   Birla,

---