Which of the following is not the method of speed control in DC series motor?(a) Diverter(b) Tapped-field control(c) Variable resistance in series with armature(d) Series- parallel controlThis question was addressed to me at a job interview.I'm obligated to ask this question of Speed Control Using Field Control of Series Motor in division DC Motors of DC Machines

Which of the following is not the method of speed control in DC series

1.	Which of the following is not the method of speed control in DC series motor?(a) Diverter(b) Tapped-field control(c) Variable resistance in series with armature(d) Series- parallel controlThis question was addressed to me at a job interview.I'm obligated to ask this question of Speed Control Using Field Control of Series Motor in division DC Motors of DC Machines
Answer» The correct option is (c) Variable RESISTANCE in series with armature To ELABORATE: Diverter means adding a variable resistance in PARALLEL with field winding. Tapped field control is the METHOD where field ampere turns are adjusted in steps by varying the number of turns INCLUDED in the circuit. In series parallel method field winding is connected so that it will form two parts.

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