If a D.C. motor is connected across the A.C. supply it will_______________?
Correct answer: D. burn due to heat produced in the field winding by .eddy currents
- A. run at normal speed
- B. not run
- C. run at lower speed
- D. burn due to heat produced in the field winding by .eddy currents
Explanation
An ordinary DC shunt motor on AC has a highly inductive field and armature reaction, producing poor torque and excessive losses, including eddy-current heating in the field core. It may overheat and burn, unlike a specially designed universal motor.
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