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In tapped field control method ____________(a) A variable resistor is connected in parallel(b) A variable resistor is connected in series(c) Field winding is made with more out pins(d) Another field winding is added with the previous oneI had been asked this question in examination.This interesting question is from Speed Control Using Field Control of Series Motor topic in portion DC Motors of DC Machines

Answer»

The correct option is (c) Field winding is made with more out pins

The BEST explanation: In tapped field control of the DC series motor a field winding is SIMPLY tapped at various points and many out pins taken, so that any out pin can be connected and particular PART of field winding will be selected in the CIRCUIT, while other part is made OPEN.



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