Q$.$No$.$ Sub.

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$1$ a A separately excited dc motor has an armature resistance $0\mathrm{.}05.$ The field excitation is kept constant. At an armature voltage of $100$ V $,$ the motor produces a torque of $500$ Nm at zero speed. Neglecting all mechanical

$10$

losses, find out the $($a$)$ back emf $($b$)$no$-$load speed of the motor for an armature voltage of $150$ V $.$