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What is the utility of plotting the occ curve of a dc generator?
Wiki User
∙ 13y ago
Generally, the plotting of open circuit characteristics curve of a dc shunt generator is used to determine the rate of change of no-load terminal voltage(same as induced emf (Eo)) with variation in field-current( I sub. f).We find from the plot that:-
a)Initially field current is zero.However due to residual magnetism at the field poles, a small amount of emf is induced.It would drive a small amount of field current according to the expression- I sub.f=Eo /R +Rsh.
b)After this ,a voltage build-up process,l be observed due to strengthening of field flux & consequently,the emf.
c)Finally, the magnetic poles tend to saturate.Hence, no significant flux-increment is observed w.r.t field current.Thus emf remains const. for higher values of field current.
Wiki User
∙ 13y ago
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Why does OCC curve become flat after certain field current?
Why does OCC curve become flat after certain field current?
Why does OCC curve become flat after certain field current Explain?
To avoid more accident
Define the term critical field resistance?
critical resistance is the maximum resistance beyond which the generator failed to exite. it can b found form the occ of the generator.
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OCC Transport was created in 1971.
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What are the four purposes of the OCC, according to its own mission statement?
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He makes $13,000 per episode he is in plus his salary from OCC.
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10,000,000
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As of July 2014, the market cap for Optical Cable Corporation (OCC) is $29,608,972.53.
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All of them i hope
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Not yet
