Answer Posted / parth belani

It will run. heating will take place which will damage the
motor if it is given AC supply for longer duration.
when AC supply is given to DC motor, the direction of the
magnetic field as well as the direction of the current in
the armature will be reversed in the second half of the AC
cycle. so, the direction of the torque will remain the same
in both the halves of the AC cycle. and motor will run.

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