A compound tube consists of a steel tube 140 mm internal diameter and 160 mm external diameter and an outer brass
tube 160 mm internal diameter and 180 mm external diameter.
The two tubes are of the same length. The compound tube
carries an axial load of 900 kN. Find the stresses and load
carried by each tube and the amount it shortens. Length of
each tube is 140 mm. Es = 2 × 105 N/mm2 and Eb = 1 × 105
N/mm2
.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k

What is creep? what is stress relaxation?