In a horizontal pipeline a 150 mm diameter pipe is connected to a 250 mm diameter pipe. the flow rate in the pipeline is 0.15 m^3/s. take the connection as a sudden enlargement and determine: (a) the pressure head loss vhen the vater flovs from the large pipe to the smaller pipe (take cc=0.64) (b) the pressure head loss when vater flovs from the small pipe to the larger pipe (c) the loss of power in both cases

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%?