Whyare magnets with concave shaped poles used in a D.C. motor?What hap – InterviewSolution

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1.	Whyare magnets with concave shaped poles used in a D.C. motor?What happens if magnets with flat poles are used in it ?
Answer» Solution :How do the MAGNETIC LINES of force passing through the magnetic field change as the shape of the magnet changes ? How do the magnetic lines forces pass through the magnetic field if the magnetic POLES are FLAT ? How should the magnetic lines of force pass through a magnetic field to PRODUCED more turning effect in an armature ?

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