1.

The process of current reversal takes place when the coil is passing through the interpolar region.(a) True(b) FalseThis question was posed to me in a national level competition.I would like to ask this question from Commutation Process in chapter Commutation Process & Excitation Methods of DC Machines

Answer»

The correct option is (a) True

To EXPLAIN: The PROCESS of current reversal called commutation TAKES place when the coil is passing through the interpolar region (q-axis) and during this period the coil is shorted via the COMMUTATOR segments by the brush located (electrically) in the interpolar region.



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