A city is experiencing a windstorm. The wind has destroyed some of the houses in that city. Assuming loading and physical properties were standard, what aspect of engineering was not correctly employed? A.
material strength
B.
elasticity
C.
design load
D.
safety factor

Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.

Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?