Water enters the constant 130-mm inside-diameter tubes of a boiler at 7 mpa and 65°c and leaves the tubes at 6 mpa and 450°c with a velocity of 80 m/s. calculate the velocity of the water at the tube inlet and the inlet volume flow rate. the specific volumes of water at the inlet and exit are 0.001017 m3/kg and 0.05217 m3/kg.

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?