Answer / phanendra babu

if it is 3ph supply there will be a displacement of 120
degrees b/w each phase so the flux produced is also having
the same displacement,if we add these three phasors the
resultant flux will rotate anti clock wise from instant to
instant.

Answer / ishaan

With the application of balanced 3-phase currents in the
stator windings of induction motor, flux produces due to all
the 3 currents which are 120 degrees apart to each other,
resultant of which is the net magnetic flux rotating in the
air gap. It is said to be alternating due to continues
occurence of N and S poles in succession.

Answer / rahul

When a net rotational torque is produced, the field is said
to be rotating (Eg> for a 3ph supply given to an
alternator.)

WHen no net rotational torque is produced due to the fact
that Fwd and Bwd torques are Equeal and Opp.,(Eg: in case
of a single phase(not split phase) supply given to a single
phase motor), then magn field is pulsating.

Answer / rajendran

when a three phase supply is applied to a machine then a
rotating magnetic field is established..... it means the
resulatant force due to the magnetic fields creates an
effect equal to that of an magnetic pole pair is rotated at
synchronous speed.

so we call it as RMF.

How you calculate the repturing capacity of a HRC fuse

0 Answers   CPCL, RSCL,

---

why do we prefer alternating current in india where as in USA prefers DC?

3 Answers   Bhel, GMR, Texmo,

---

Why voltge arev transformed in to 132KV/66/KV/33KV like that

5 Answers   HAL,

---

what is the diff b/w HP and KW

10 Answers  

---

is it true there's a big difference in using Cummins or Denyo...especially power output or leakage

0 Answers  

---

what is the rating of boiler?

4 Answers  

---

what the purpose of transmited high voltage in over head lines

3 Answers   NCC,

---

What is the unit of attenuation?

0 Answers  

---

what about SAP/MRP regarding manufacturing of electric motors and all drives?

0 Answers  

---

How to convert resistance value at 20 degree to 90 degree?

2 Answers  

---

What happend if we connect star point to ground of a star connected motor? And what will be effect on system and effeciency of motor?

1 Answers  

---

what is the purpose of the armored for the power Or control cable? How to select the type of the armored?

1 Answers   Siemens,

---