The large diameter and face of the disk of a multiple disk clutch are 255 mm and 25 mm respectively. The helical compression spring used to engage the clutch has 9.5 effective coils of 10 mm steel wire. The outer coil diameter is 80 mm. The free length of the spring is 185 mm. When in place with the clutch engaged, its length is 130 mm. Assuming that there are 10 pairs of friction surface in contact and the motors runs at 1200 rpm, with coefficient of friction on contact surface f = 0.15 determine the axial force available for the clutch if the spring modulus of rigidity is 80GN/m². a. 1.89 kN b. 1.99 kN c. 1.79 kN d. 1.69 kN www

Q: 10 Fig. (6) 8 MPa

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A:

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A: Solution:

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Power Transmission Elements

It is defined as the energy transfer from one location to another location. The energy will start moving from the energy generation source to the energy applied position to obtain the work output. From this method, a large amount of electric energy moves from the power station to various electrical substations.