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...

what ll happen to current if two phases get short circuited

2 Answers   Kirloskar,

---

What the difference between three phase contactor (coil 110vac) & three phase SSR (control voltage 110Vac)? May I use contactor in place of SSR?

0 Answers  

---

Which of the following loss varies with the load A hystresis loss B eddy current loss C copper loss D core loss

1 Answers  

---

why a single phase motor of same rating takes more amps than the three phase motor? as single phase motor at 230v takes 5amp per HP while 3 p motor takes 2.5amp per hp at 230v.

1 Answers  

---

what is meant by neutral compensation factor and where it is used

0 Answers  

---

What is on delay and off delay timers

1 Answers   NCC,

---

what is thermal setting and magnetical setting?

1 Answers  

---

FOR 16/20 MVA 132/33 KV ONAN/ONAF TYPE TRANSFORMER IT IS DESIGNED FOR 16 MVA WITH ONAN CONDITION.IT BECOMES 20 MVA UNDER ONAF CONDITION.LOAD LOSS IS GUARANTEED FOR 65KW AT 20 MVA AND % IMPEDANCE 13.75. PLEASE TELL US AT WHAT LOAD LOSS AND % IMPEDANCE IT SHOULD BE DESIGNED FOR 16 MVA AND WHAT WILL BE ITS EFFICIENCY AT 20 MVA?

0 Answers  

---

Dear Sir / Madam, Actually we requied 64 A MCB, But i have 32 A MCB = 2 No's this two i have to make series connection and we usw any place? isit possible or not......

4 Answers   Hindustan Unilever Limited,

---

My switchgear busbar is rated at 2000A and just imagine the actual load on busbar is 1000A. From that busbar there are 10 outgoing feeders. Now the question is will the load be 1000A on each outgoing feeder or 100A per outgoing feeder. 2nd thing how do i calculate the load on individual feeder. Thanks for your time. Please provide some clarification on this issue.

1 Answers   Alstom,

---

what is the function of choke and starter in a tube light?

2 Answers  

---

What is application/Function of Electro chlorinator in Offshore Oil & gas Platform ?

1 Answers  

---