A selected pump operates at 1750 rpm and delivers 4135 gpm at 248 feet of head with a 16 inch impeller. The design of the system requires that the pump deliver only 3700 gpm. What is the new impeller diameter to meet the design flow rate

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

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false