Question 1 A 100 mm diameter shaft with a length of 6 m is connected by...

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Question 1 A 100 mm diameter shaft with a length of 6 m is connected by a flange coupling and transmitting maximum power. A square key of 20 mm is used to connect the shaft and the hub. The coupling has 4 bolts arranged along a circle diameter of 400 mm. The maximum shear stress of the material for the shaft, key and bolts are 70 N/mm, 80 N/mm2 and 85 N/mm2 respectively. (a) Calculate the torque (Nm) of the shaft. (2 marks) (b) Determine the diameter (mm) of the bolts. (2 marks) (c) What is the length of the key? Assume the key fails by shearing only. (2 marks) (d) Calculate the power (kW) if it is rotating 500 rpm. (2 marks) (e) Determine angle of twist (in radians) of the shaft if G is 80 GN/m. (2 marks) Question 2 a. Use a graph paper, construct the displacement diagram of a cam and follower system with the following data: Angular Displacement 0-120 120-160 160-320 320-360 Motion Rise 60 mm with simple harmonic motion Dwell Fall 40 mm with uniform acceleration & retardation Fall 20 mm with uniform velocity motion Use a scale of 1 cm per 10 mm rise in the y-axis and 1 cm per 20 degree in the x-axis. (8 marks) b. Using the above displacement diagram, Construct the Cam Profile with a base circle of radius 40 mm. Use a blank paper with Scale 1:1 Question 1 A 100 mm diameter shaft with a length of 6 m is connected by a flange coupling and transmitting maximum power. A square key of 20 mm is used to connect the shaft and the hub. The coupling has 4 bolts arranged along a circle diameter of 400 mm. The maximum shear stress of the material for the shaft, key and bolts are 70 N/mm, 80 N/mm2 and 85 N/mm2 respectively. (a) Calculate the torque (Nm) of the shaft. (2 marks) (b) Determine the diameter (mm) of the bolts. (2 marks) (c) What is the length of the key? Assume the key fails by shearing only. (2 marks) (d) Calculate the power (kW) if it is rotating 500 rpm. (2 marks) (e) Determine angle of twist (in radians) of the shaft if G is 80 GN/m. (2 marks) Question 2 a. Use a graph paper, construct the displacement diagram of a cam and follower system with the following data: Angular Displacement 0-120 120-160 160-320 320-360 Motion Rise 60 mm with simple harmonic motion Dwell Fall 40 mm with uniform acceleration & retardation Fall 20 mm with uniform velocity motion Use a scale of 1 cm per 10 mm rise in the y-axis and 1 cm per 20 degree in the x-axis. (8 marks) b. Using the above displacement diagram, Construct the Cam Profile with a base circle of radius 40 mm. Use a blank paper with Scale 1:1