What should be the range of the product of the magnetic field and magnetic flux density?(a) 4-4.5 * 10^6(b) 4-4.3 * 10^6(c) 4.3-4.6 * 10^6(d) 4.2-4.5 * 10^6This question was addressed to me by my college professor while I was bunking the class.I'd like to ask this question from Design Steps and Considerations in chapter Design of Permanent Magnet (PM) DC Motors of Design of Electrical Machines

What should be the range of the product of the magnetic field and magn

1.	What should be the range of the product of the magnetic field and magnetic flux density?(a) 4-4.5 * 10^6(b) 4-4.3 * 10^6(c) 4.3-4.6 * 10^6(d) 4.2-4.5 * 10^6This question was addressed to me by my college professor while I was bunking the class.I'd like to ask this question from Design Steps and Considerations in chapter Design of Permanent Magnet (PM) DC Motors of Design of Electrical Machines
Answer» Right CHOICE is (c) 4.3-4.6 * 10^6 The best I can explain: The product of the MAGNETIC field and magnetic FLUX DENSITY has a minimum VALUE of 4.3 * 10^6. The product of the magnetic field and magnetic flux density has a minimum value of 4.6 * 10^6.

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