Speed current characteristic of cumulative DC compound motor at larger values of armature current is similar to that of _____________(a) DC shunt motor(b) Induction motor(c) DC differential compound motor(d) DC series motorThe question was posed to me in an interview for job.My doubt is from Operating Characteristics of DC Compound Motor topic in division Characteristics of DC Motors of DC Machines

Speed current characteristic of cumulative DC compound motor at larger

1.	Speed current characteristic of cumulative DC compound motor at larger values of armature current is similar to that of _____________(a) DC shunt motor(b) Induction motor(c) DC differential compound motor(d) DC series motorThe question was posed to me in an interview for job.My doubt is from Operating Characteristics of DC Compound Motor topic in division Characteristics of DC Motors of DC Machines
Answer» Right option is (d) DC series MOTOR To explain: At higher values of current SPEED of the DC cumulative compound motor starts DECREASING DUE to effect of series field flux, which is also seen in DC series motor. Thus series motor and DC cumulative motor follow same characteristics.

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