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Electrical Machines EE256


Posted by: seminar class
Created at: Monday 28th of March 2011 03:58:17 AM
Last Edited Or Replied at :Monday 28th of March 2011 03:58:17 AM
questions and answers about dc machines ppt , question and answers on electrical machines ii, pole pitch related math in dc generator , electrical machines dc generators questions, diffenece self excited and separate , electrical machines question answer, diff bw pm excited and self excited generators , electrical machines 2 question with answers, write down the brushes of a dc machine , electrical machines question and answers in pdf, electrical machines 1 questions and answers download , answers ge question 20442, difference bw self excited seperately excited , free electrical machines question answer, lap winding and wave winding ppt ,
igned for low current and high voltages.
3. Write the number of parallel paths in a lap and wave connected windings
In a lap wound machine, the number of parallel paths is equal to the number of poles. But in wave wound machine, the number of parallel paths is always two irrespective of number of poles.
4. Name the three things required for the generation of emf
o Presence of armature conductors
o Presence of magnetic field
o Relative motion between conductor and magnetic field
5. What are the different types of dc generator
6. What is meant by self excited ..................[:=> Show Contents <=:]



Electrical Machines EE256


Posted by: seminar class
Created at: Monday 28th of March 2011 03:58:17 AM
Last Edited Or Replied at :Monday 28th of March 2011 03:58:17 AM
questions and answers about dc machines ppt, question and answers on electrical machines ii , pole pitch related math in dc generator, electrical machines dc generators questions , diffenece self excited and separate, electrical machines question answer , diff bw pm excited and self excited generators, electrical machines 2 question with answers , write down the brushes of a dc machine, electrical machines question and answers in pdf , electrical machines 1 questions and answers download, answers ge question 20442 , difference bw self excited seperately excited, free electrical machines question answer , lap winding and wave winding ppt,
rator. the center to center distance between two adjacent poles is called pole pitch
It is also equal to the number of armature slots or armature conductors per pole.
10.How can the voltage in a DC generator be increased?
Increasing the main field flux and the speed of the armature can increase the voltage in a DC generator.
11.What is critical resistance of a DC shunt generator?
The value of resistance of shunt field winding beyond which the shunt generator fails to build up its voltage is known as “ critical resistance “.
12.what are..................[:=> Show Contents <=:]



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