The input shaft to a gearbox, shown in Figure 3, operates at a speed of n1 and transmits a power of 30 hp. The output power is 27 hp at a speed of n2. (a) What is the torque of each shaft (in kip · in.) and (b) the efficiency of the gearbox? Use n1 = 1800 rpm, n2 = 425 rpm. (c) Also compute for the torsional stress on the 1.5” diameter solid shaft C, and on the hollow shaft at E whose D =2” and d = 1.5”.

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Q: d-150 mm d,-300 mm 4,4 kN 4 B 150 mm KSAN 300 mm 300 mm

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Q: the centre distance in mm

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A: The Froude number is given by the following equation,

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Clutches, Brakes, Couplings, and Flywheels

The clutch is described as a machine element used to connect or disconnect two shafts together to transmit torque or power. The clutch works on the principles of friction. The clutch is commonly used in automobiles to transfer power from the driving shaft to the driven shaft.