The shape of the current-torque current characteristics in DC series motor is a __________(a) Rectangular Hyperbolic(b) Parabola(c) Circle(d) EllipseThis question was addressed to me in exam.Question is from Dynamic Braking of DC Series Motors in portion Braking of DC Motors & Induction Motors of Electric Drives

The shape of the current-torque current characteristics in DC series m

1.	The shape of the current-torque current characteristics in DC series motor is a __________(a) Rectangular Hyperbolic(b) Parabola(c) Circle(d) EllipseThis question was addressed to me in exam.Question is from Dynamic Braking of DC Series Motors in portion Braking of DC Motors & Induction Motors of Electric Drives
Answer» Right CHOICE is (b) Parabola The explanation is: The shape of the current-torque CHARACTERISTICS in the DC SERIES motor is a parabola. The motor equation is Eb=Vt-IaRa=Km∅ωm. T=Km∅Ia. ∅∝Ia. T∝Ia^2.

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