A solid steel shaft is to be designed to transmit 750 kW at 1,500 revolutions per minute. The steel selected is an AISI 1030, cold drawn (CD) steel. The shaft is 1 m long. Assume that the bending load on the shaft is negligible. (a) Using a factor of safety of 1.5, design the diameter of the shaft. (b) If instead of using a solid shaft, a hollow shaft with the inside diameter 0.8 times the outside diameter is used, will there be any weight saving

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.