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Example 2.18
E=220V
when extra resistance is added in the armature circuit,the speed is halved
The load torque is conatant
extra resistance in the armature circui,R=5.500000ohms
The load torque directly proportional to square of speed
if N is halfed, Iais one-fourthed
extra resistance in the armature circui,R=23.500000ohms
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