Two water reservoirs A and B are connected to each other through a 40-m-long, 2-cm-diameter cast iron pipe with

a sharp-edged entrance. The pipe also involves a swing check

valve and a fully open gate valve. The water level in both

reservoirs is the same, but reservoir A is pressurized by compressed air while reservoir B is open to the atmosphere at

88 kPa. If the initial flow rate through the pipe is 1.2 L/s,

determine the absolute air pressure on top of reservoir A.

Take the water temperature to be 10°C

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

The higher the astm grain size number, the finer the gran is. a)-true b)-false