Which of the following equation best represents the mutual inductance between stator and rotor in a single phase cylindrical rotor synchronous machine? (where r= space angle between stator and rotor field axis)

Which of the following equation best represents the mutual inductance

1.	Which of the following equation best represents the mutual inductance between stator and rotor in a single phase cylindrical rotor synchronous machine? (where _r= space angle between stator and rotor field axis)
A.	M<sub>sr</sub>=0
B.	M<sub>sr</sub>=M<sub>max</sub>
C.	M<sub>sr</sub>=M<sub>max</sub>cos <sub>r</sub>
D.	M<sub>sr</sub>=M<sub>max</sub>sin <sub>r</sub>
Answer» D. M<sub>sr</sub>=M<sub>max</sub>sin <sub>r</sub>

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Which of the following equation best represents the mutual inductance between stator and rotor in a single phase cylindrical rotor synchronous machine? (where r= space angle between stator and rotor field axis)

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Which of the following equation best represents the mutual inductance between stator and rotor in a single phase cylindrical rotor synchronous machine? (where _r= space angle between stator and rotor field axis)