Four strain gauges, with specification given below, are available to measure the torque on a cylindrical shaft 4 cm in diameter connecting a motor and load. (a) Draw clearly labelled….
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Find the range of exit pressures for which the duct exit flow is choked.
Room air is drawn into an insulated duct of constant
area through a smoothly contoured converging nozzle.
Room conditions are T 5 80
F and p 5 14:7 psia. The duct
diameter is D 5 1 in. The pressure at the duct inlet (nozzle
outlet) is p1 5 13 psia. Find (a) the mass flow rate in the duct
and (b) the range of exit pressures for which the duct exit
flow is choked.
*These problems require material from sections that may be omitted without loss of continuity in the text material.
778 Chapter 13 Compressible Flow
