DC Motors
These days dc motors are widely used in

Pumping sets
Machine shops
Electric traction
Air compressors

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DC Motors
If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens

Nothing will happen to motor
Motor will come to stop
This will make armature to take heavy current, possibly burning it
This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses

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