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1. The mechanical properties of cobalt may be improved by incorporating fine particles of tungsten carbide (WC). Given that the mod- uli of elasticity of these materials are, respec- tively, 200 GPa (30 x 106 psi) and 700 GPa
2. (a) What is the distinction between cement and concrete?
(b) Cite three important limitations that restrict the use of concrete as a structural material.
(c) Briefly explain three techniques that (102 x 106 psi), plot modulus of elasticity are utilized to strengthen concrete by rein versus the volume percent of WC in Co from 0 to 100 vol%, using both upper- and lower- bound expressions.
steam at 10 mpa and 450 degrees c enters an adiabatic turbine at 80 ms and exits at 10 kpa 92 quality and 50 ms. the
A large plastic casting with thermal diffusivity 6.0 x10^7 m2 /s is removed from its mold at a uniform temperature of 150 degrees C. The casting is then exposed to a high-velocity air stream such that the surface experiences a sudden change in temper..
at a given instant in time flywheel oa is caused to rotate with angular velocity of w2radsec and angular acceleration o
Specify the proper fail-safe action for the valves in the following services. Please explain your reasons. A valve manipulates the flow rate of reactant to a reactor vessel. The reaction is exothermic
air enters an insulated compressor operating at steady state at 1.05 bar 23 degrees c with a mass flow rate of 1.8 kgs
Approximate the human form as an unclothed vertical cylinder of 0.3-m diameter and 1.75-m length with a surface temperature of 30°C.
Air is flowing steadily through a horizontal tube at a constant temperature of 32 deg C and a mass flow rate of 1 kg/s. At one point upstream where the tube diameter is 50 mm, the pressure is 345 kPa. At another point downstream the diameter is 75 mm..
The centerline of the tube coincides with the focal line of the collector, and a glass sleeve is placed outside the tube to minimize the heat losses. If solar energy is transferred to water at a net rate of 400 Btu/h per ft length of the tube, det..
How do human beings make economic decisions in engineering, business and personal contexts. What is entailed ineconomic decision making and the process
a gas turbine engine based on the brayton cycle uses air as the working fluid that produces 5mw net power output. the
what is the density of solid aluminum at the melting temperature? what is the density of liquid aluminum at the melting
A voltage signal consists of a pure sine wave of amplitude 10.0 V at 180 Hz. This signal is sampled digitally at a sampling frequency of 200 Hz. 128 data points are taken.
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