With a flow Q of 450 l/s of water, find the head loss and the division of flow in the pipes from A to B. Take v = 10-6 mys and ? 2· 0.1 mm for all pipes. (see Figure E.4.2) L= 1000 m D=35cm L= 600 m D-30 cm ? 600 m D=60cm 8 1200 m D=75 cm 1000 m D=40 cm

Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?