If the damper winding on the rotor of a synchronous motor is
removed after starting what will happen?
- 7 Answers
- 12317 Views
- IOCL, I also Faced
- E-Mail Answers
Answer Posted / sara ashfaq
1- Damper windings helps the synchronous motor to start
on its own (self starting machine) by providing starting torque
2- By providing damper windings in the rotor of
synchronous motor "Hunting of machine"can be suppressed.When
there is change in load, excitation or change in other
conditions of the systems rotor of the synchronous motor
will oscillate to and fro about an equilibrium position. At
times these oscillations becomes more violent and resulting
in loss of synchronism of the motor and comes to halt
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I - is the value of AC fault current. t - is the operating time of disconnecting device in seconds. K – is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.
What is meant by reactance voltage?
i need about 10 years of GATE solved papers in pdf format and even mock tests toooo
What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?
How to calculate impedance volt in Transformer?
How to synchoronize the generator (with gcb,GT) to grid????? ????? from Grid iam getting power (rated 400kv/20kv) through GT and its goes to UAT.,,ST.,, now my generator(rated 20kv ) ready.,, now iam closing my GCB.,, in GT iam suddenly giving 20kv on that Gt.,, what will happend
What are high pass filter and low pass filter? and What are the flowmeter ?
What fomula is used to calculate: 1. rated frequency withstand voltage, and 2. rated lightning impulse withstand voltage.
what will happens if one phase is missing for 33/11kv power transfomer and why?
ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant
how to calculate the fault in substation
What is different bewteen low or high impedance busbar protection scheme
I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?
What is Fire Panel ? How it works ?
WHERE CAN I GET THE PREVIOUS QUESTION PAPERS OF Govt Polytechnic in deee 2nd year papers
