Show solution. A 40. In diameter fan rated at 160,000 gpm standard air at 16 in. static pressure is operating at 1200 rpm. Solve for the specific speed

Q: A multi disc clutch is used to transmit to 10 kW power at 900 rpm. If the external diameter of friction lining is 1.25 times the internal diameter, find the required dimensions of the friction lining and the axial force exerted by the oil chamber pressurized to engaged the disks a with disks b. The pressure between disks is limited to 0.085 N/mm?. Assume average service condition. The coefficient of friction may be taken as 0.3. Disks a Disks b Seals Oil chamber (pressurized to engage clutch) Piston Bushing Oil passage Output Key Key Input Oil passage Page 1 of 1

# 2 A pump supplies oil at 25 gpm to 1 % in diameter double -acting hydraulic cylinder. If the load is 1200 lb (extending and retracting) and the rod diameter is 4 in. find the c. Hydraulic pressure during extending stroke d. Piston velocity during the extending stroke e. Cylinder horsepower during the extending stroke f. Hydraulic pressure during the retracting stroke g. Piston velocity during the retracting strike h. Cylinder horsepower during the retraction stroke.

A UMC 50-80 circulator is operating at 1750 RPM. Flow is 50 GPM. Feet of head (friction) is 19 ft. Brake horsepower is 0.40. RPM decreases to 60% of maximum. No other changes occur to the system. What is the new GPM?