" In case of DC servomotor the back-emf is equivalent to an 'electric – McqOptions

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1.	" In case of DC servomotor the back-emf is equivalent to an 'electric friction' which tends to :"
A.	" Improve stability of the motor"
B.	" Slowly decrease stability of the motor"
C.	" Vary rapidly decrease stability of the motor"
D.	" Have no effect on stability"
Answer» B. " Slowly decrease stability of the motor"

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