b) A differential band brake as shown in Figure 2 is being considered for use with a hoistdrum. With the hoist operating at rated load, a brake torque of 4000,000 Nmm is requiredto hold the drum from slipping. Available space limits the cast-iron brake drum diameter to650 mm, with brake band contact extending over an angle of 250°. Design values for thebrake lining selected are f = 0.40, Pmax = 1.1 MPa. i.ii.III.iv.DrumBand of width, w- RotationF2Figure 2Determine 7₁ and T₂ corresponding to maximum brake torqueSelect an appropriate value of brake band widthaIf distance a (Figure 2) is 120 mm, examine the value of distances that would enablethe brake to be operated with a force F₂ of 200 N at the end of a lever of length c = 650mm.Using the linkage dimensions from part (c), evaluate the value of s that would makethe brake self-locking

Answered: Image /qna-images/answer/34ee1dd9-17fd-41f2-9f9d-4da81a682293.jpg

b) A differential band brake as shown in Figure 2 is being considered for use with a hoist drum. With the hoist operating at rated load, a brake torque of 4000,000 Nmm is required to hold the drum from slipping. Available space limits the cast-iron brake drum diameter to 650 mm, with brake band contact extending over an angle of 250°. Design values for the brake lining selected are f= 0.40, Pmax = 1.1 MPa.

b) A differential band brake as shown in Figure 2 is being considered for use with a hoist drum. With the hoist operating at rated load, a brake torque of 4000,000 Nmm is required to hold the drum from slipping. Available space limits the cast-iron brake drum diameter to 650 mm, with brake band contact extending over an angle of 250°. Design values for the brake lining selected are f= 0.40, Pmax = 1.1 MPa.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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