If the damper winding on the rotor of a synchronous motor is
removed after starting what will happen?
Answer Posted / deepak tyagi
When synchronous motor get started than it run at
synchronous speed. at this time damper has not current. the
second purpose is it provied synchronzing power in case of
disturbance.this power pull the machine in the synchronizm
again. so if we remove the after starting than machine will
work in synchronizm but as load incresed machine will not
work as synchronous motor.
Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
What is limitedly stable system?
Refernce currents are to be generated using refernce cueernts how can this be done
Can the output voltage of a rectifier be greater than the input AC voltage without the use of any voltage multiplier in the circuit??please provide the explanation too..
While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x
What are the three major categories of error?
Load break swicth maintenance procedure.
what is the difference between neutral and earth
Witch do depand of Power factor and theory of power factor?
Vibromotor 252MV 1/4HP2P..what is mean by 252MV?
Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?
what is the differation bewreen kwh & fundamental kwh in electronic trivector meters
what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end
why occ characteristics curve in not tracing back when we are bringing back the rhoestat?
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
What is the difference between multimeter