Consider a subsonic engine inlet (i. e., a diffuser) with an inlet area of 2.30 × 103 in2 and exit-to-inlet area ratio of 1.44. air enters the diffuser flowing at 10.0 lbm/s with a static pressure of 5.00 psia and a velocity of 365 ft/s. the gases exit the diffuser at a static pressure of 5.40 psia and a velocity of 174 mph. assume that the ambient (external) pressure on the walls of the diffuser is 4.90 psia.

Fluids at rest possess no flow energy. a)- true b)- false

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.