In a synchronous motor armature current flows due to
revolving flux which in turn rotates the load,but in no
load condition armature current is zero hence thr is no
revolving flux then how motor rotates?
Answer Posted / md fakruddin
syn.motor isnot self starting.so we have start with some
other arrangements .one of the best ones is by damper
winding .damper winding is shorted on both side of rotor,as
by induction motor princepal motor rotate itself ,and
magnetic locking between rotor poles and stator occures and
motor runs.at no load armature current is not zero as there
are losses .and there is no relation between armature
current and load because motor hs started already .
Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
which type of stability limit is higher,steady state or transient? why?
There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?
What is A check, B check, C Check & D check for a diesel Generat
Thermal withstand capability under full short circuit conditions, in terms of number of times of occurrence of short circuit and corresponding anticipated percentage reduction in transformer life.
What is the voltage gain or transfer function of amplifier?
How to calculate the heat load for a electrical room
Why we use auxillary relay ? what is function of differential relay, directional o/c relay?
can you plz send l&t aptitude questions if available its urgent plz plz plz
What are the main advantages of generalized error co-efficients?
Why negative feedback is preferred in the control system?
what the Microsoft .NET framework is?
in shunt clippers why a resistor is used in sereis with the input
What is the different between conventional MCC and intelligent MCC? Common controller or controller for each bucket
Why 1/3 is used in symmetrical components?
What is the difference between security constraint unit commitment and security constraint optimal power flow?