Gas mixture flows isentropically from a reservoir where p = 700 kPa and T, = 305 k to a 150 mm diameter section where the velocity is 183 m / s. Calculate the mass flow rate, Mach number, pressure and the temperature at this section (take, k = 1.396, C = 917 J / Kg. k and R = 260 J / Kg. k)​

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

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.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way