A) Supply voltage is not correct.
B) Polarity of the magnets is wrong.
C) Polarity of the carbon brushes \[{{B}_{1}}\] and \[{{B}_{2}}\], is not correct.
D) Nothing is wrong with it.
Correct Answer: A
Solution :
A motor with direct connection requires a battery. The figure of galvanometer of 230 V and 50 Hz renders the figure incorrect, as it an A.C. connection.
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