Answer / manoj kmr

synchronous motor works on the principle of magnetic locking. when two
unlike poles are brought near each other if the magnets are strong there
release a force of attraction b/w those two poles in that condition magne
ts are said to be magnetic locking .
if one of the two magnets is rotated the other one also rotate with same
direction and speed due to force of attraction

Answer / devsingh boda

A synchronous motor always runs at synchronous speed,because
of MAGNETIC LOCKING phenomenon.
In syn motors the armature poles(rotor poles) are
physically designed(located) on the rotor as we see in
salient pole syn machines.But whenever ac supply is given to
the stator winding windings , a rotating magnetic field Or
rotating magnetic poles (stator field or stator poles) are
created itself which rotates at syn speed.Any particular
stator pole attracts the rotor pole which in sign
opposition ie, stator N attracts rotor S and stator S
attracts rotor N.As a particular stator pole moves at syn
speed , the rotor pole that is attracted by that particular
stator poles also move at syn speed.This phenomenon is
called magnetic locking.Because of this magnetic locking the
rotor always rotates at syn speed...

Answer / devsingh boda

: In syn motors the armature poles(rotor poles) are
physically designed(located) on the rotor as we see in
salient pole syn machines.But whenever ac supply is given to
the stator winding windings , a rotating magnetic field Or
rotating magnetic poles (stator field or stator poles) are
created itself which rotates at syn speed.Any particular
stator pole attracts the rotor pole which in sign
opposition ie, stator N attracts rotor S and stator S
attracts rotor N.As a particular stator pole moves at syn
speed , the rotor pole that is attracted by that particular
stator poles also move at syn speed.This phenomenon is
called magnetic locking.Because of this magnetic locking the
rotor always rotates at syn speed...

How to find synchronous motor speed formula Ns=120f/P ?....

2 Answers   Cranedge,

---

inductance and capacitance may result in periodic reversals of the direction of energy flow,how???

1 Answers  

---

can we correct the p.f.of ac generator?

2 Answers   APGenco,

---

what is reason in mv breaker the control supply voltage is dc not ac?

1 Answers  

---

why alternator is used instead of dc generator and induction generator

1 Answers  

---

---

what is the difference between synchronous & asynchronous generators

1 Answers   Emco,

---

why transformer has more efficiency compare to rotating machine?

3 Answers  

---

what is the std. earthing resistance for 440V system or m/c, 33000/440 Volt substation? What is the std.?

2 Answers  

---

the input mechanical power of a single alternator is increased,its RPM increased but in case of an alternator synchronised with grid its RPM does not increased with increase of input mechanical power. why?

3 Answers   Bhel,

---

mcb kitna type ka hata hai aur uska pura naam please bataye

2 Answers  

---

Earth is a conductor or load?then ammeter connect to 3- phase supply,it shows the measurents or not?

0 Answers   UltraTech,

---

what is gas turbine intercooling ?

0 Answers  

---