Question

A location for the worst shear stress in the throat of the weld is at the top of the left segment of the weld. True or False?

QUESTION 18 The figure shows four gear trains composed of identical components. The input gear in each case is designated by the arrow showing the direction of rotation. The next gear in each case is the idler. The last gear in each case is the output gear For the same given input torque, which arrangement creates the smallest load on the bearing of the idler? ဝင်း (a) (b) (c) (d) o They are all equivalent. o (c) ဝ (b) o (a) ဝ (d)

F = 4 kN

L1 = 200 mm

L2 = 60 mm

L3 = 100 mm

h = 4 mm (recall, h is the leg of the fillet weld, not its throat).

Find the magnitude of the worst shear stress anywhere in the throat of the fillet weld. Express your answer in units of MPa.

Answer 1

Ques. 18 FBD of of the figures idler case : in each gear F f a F La Lb) O O f f (C) cd, is same we can say The magnitude of forces the magnitude of resultant of all the forces is same, only the direction varying, which will will not same load cause on the bearing 6 i. The answer CS They all Equivalent?