A PMMDC motor has an armature resistance of 4.2 ohms. When 6 V supply – McqOptions

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1.	A PMMDC motor has an armature resistance of 4.2 ohms. When 6 V supply is applied to motor it runs at 1215 rpm drawing 14.5 mA on no-load. The rotational losses is?
A.	86.1 mW
B.	86.1 W
C.	8.6 W
D.	8.6 mW
Answer» B. 86.1 W

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