A rectangular key is used in a pulley connected to a line shaft at 15 kW and 600 rpm. If shearing of key is 230 MPa, determine the force acting on key length in kN if key width is one-fourth of shaft diameter and key length is 1 inch.

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(BB) Q1: The shaft, as shown in Fig. is driven by pulley B from an electric motor. Another belt drive from pulley A is running a compressor. The belt tensions for pulley A are 1500 N and 600 N. The ratio of belt tensions for pulley B is 2.5. The diameter of pulley A is 150 mm and the diameter of pulley B is 480 mm. The allowable shear stress for the shaft material is 85 MPa. Taking torsion and bending factors as 1.25 and 1.5 respectively, find the shaft diameter. C # -100- A B -150-100 D TB2 All dimensions in mm. B A TAZ TAI TB1

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A square key fixing a gear on a 30 mm diameter shaft. The shaft is transmitting a power of 18 kW to the gear at 800 rpm. The key is made of steel with a yield strength of 470 N/mm² and the factor of safety is 2.5. The yield strength of the key material in compression can be assumed to be equal to the yield strength in tension. Determine the dimensions of the key.

One shaft is in torsion as shown below. If the magnitude of shear stress at point A is 345.6 MPa, calculate the magnitude of the shear stress at point B on the same cross-section as point A: MPa. Calculate your answer to 1 decimal place. 40 mm 30 mm T

A shaft drives a gear set that is transmitting 8 hp at 2250 rpm. The diameter of the shaft is 1.75 in. Determine the torsional shear stress developed in the shaft.

A belt drive is required to transmit 10 kW from a motor running at "600 rpm. The belt is 12 mm thick -and -has a mass density of 0.001 g/mm3. Safe stress in the belt is not to exceed 2.5 N/mm2. Diameter of the driving pulley is 250 mm, whereas the speed of the driven pulley is 220 rpm. The two shafts are 1.25 m apart. The coefficient of friction is 0.25. Determine the width of the belt.