The shape of the speed-armature current characteristics in DC shunt motor is __________(a) Hyperbolic(b) Parabola(c) Negative slope linear line(d) EllipseThe question was posed to me by my school teacher while I was bunking the class.My doubt is from Countercurrent Braking of DC Shunt Motors in chapter Braking of DC Motors & Induction Motors of Electric Drives

The shape of the speed-armature current characteristics in DC shunt mo

1.	The shape of the speed-armature current characteristics in DC shunt motor is __________(a) Hyperbolic(b) Parabola(c) Negative slope linear line(d) EllipseThe question was posed to me by my school teacher while I was bunking the class.My doubt is from Countercurrent Braking of DC Shunt Motors in chapter Braking of DC Motors & Induction Motors of Electric Drives
Answer» CORRECT choice is (c) Negative slope linear line Explanation: The shape of the speed-armature current characteristics in DC SHUNT motor is negative slope linear line. The motor EQUATION is Eb=Vt-IaRa=Km∅ωm. N=(Vt-IRa)/Km. N vs IA is a negative slope line with slope = -Ra/Km.

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