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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 ,
e 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 the conditions to be fulfilled for a shunt generator to build up Voltage?
a) There must be some residual magnetism in the field poles.
b) The shunt field resistance should be less than critical resistance.
c) The field coils should be connected with the armature in such a way that current flowing through them should increase the EMF ..................[:=> 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,
f parallel paths
9.what is pole pitch?
The periphery of the armature is divided for a number of poles of the generator. 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 win..................[:=> Show Contents <=:]



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