The arm of a starter is held in the "ON" position by means of an eleetromagnet. The torque exerted by the spring is 5 Nm and the effective radius at which the force is exerted is 10 cm. Area of each pole face is 2.5 cm? and each air gap is 0.4 mm. Find the minimum number of ampere-turns (AT) required to keep the arm in the "ON" position.?

The arm of a starter is held in the "ON" position by means of an eleetromagnet. The torque exerted by the spring is 5 Nm and the effective radius at which the force is exerted is 10 cm. Area of each pole face is 2.5 cm? and each air gap is 0.4 mm. Find the minimum number of ampere-turns (AT) required to keep the arm in the "ON" position.?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter12: Rotation I: Kinematics And Dynamics

Section: Chapter Questions

Problem 71PQ: Three forces are exerted on the disk shown in Figure P12.71,and their magnitudes are F3 = 2F2 = 2F1....

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