The pressure head drop across a short section of an 8in. pipeline (PCV) is 12ft. the pipeline section contains a globe vavle and another valve of some kind that is open but not labeled. Determine what kind of valve it is if the flow rate is 2.74 ft3/s. Assume that the friction loss is negligible in the short pipe segment.

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?