Question

State whether True or False :
If a DC motor is connected across AC supply it may run.

A

True

B

False

Easy
Solution
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Correct option is A)

If a DC series motor is connected to a ac supply same current will flow through the series field and armature field after being rectified by the commutator. So, the machine will run but with high sparking at brush, poor pf, low speed and low efficiency.

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