Interested to Buy Any Domain ? << Click Here >> for more details...
In a 3 phase squirrel cage induction motor why does rotor
rotate?
will 3 phase transformer rotate like a motor if it is
placed on bearings and powered up? give reason
- 10 Answers
- 29031 Views
- Siemens, I also Faced
- E-Mail Answers
Answer Posted / ramesh pachamal
Due to the rotating magnetic field in the stator induces an
emf in the rotor. As the rotor rings are short circuited a
current will flow through the rotor bars.As per the
faradays law, a current carrying rotor bar at magnetic
field it excerts force causes to rotate.
As the induction motor is called as rotating transformer,
the concept in both the group is same as mutual induction.
A modification of transformer can be done to rotate. This
is the purpose a heavy steelbelt is provided in the
secondary of the transformer normally. Eventhough the
secondary get force and will make airgap inside the winding
giving noise.(inductive reactance)
| Is This Answer Correct ? | 10 Yes | 8 No |
Post New Answer View All Answers
what is a reactive power? what is the relation with power factor?
What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?
What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?
Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?
while starting a liquid starter ,is there any volage drop on water/soda on tank.can we touch the tank on starting?
why 15 kw motor winding resistance is low then 5 kw motor winding resistance?
Why are the laminations insulated from each other?
why swinburnes test cannot be performed on series machines?explain
Which device is used for the source of emission of electrons in a crt?
Write the force balance equation of ideal dashpot element.
When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?
What is speed mode?
in 6.6 kv vaccum circuit breaker vaccum bottole vaccum capacity ????
What is meant by time harmonics and space harmonics?
Can anybody tell abt concrete encased earthing or grounding?
