In which of the following motor, ratio of starting torque to full-load torque will be least?

In which of the following motor, ratio of starting torque to full-load torque will be least? Correct Answer DC shunt motors

From torque current characteristic, we get that torque at no load or starting torque is equal to zero. As load increases, speed decreases and armature current increases so as torque also increases linearly, if effect of armature reaction is neglected.
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