Two technicians are discussing the torquing procedure for head bolts. technician a says that they should be tightened starting at the center of the head and working toward the ends. technician b says that they should be tightened in three steps or according to the torque-to-yield or torque-angle procedure if specified by the manufacturer. who is correct

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

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