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A steel bar is to be quenched in agitated water. Determine the maximum diameter of the bar that will produce a minimum hardness of HRC 40 if the bar is:
Assess the effect of surface temperature on the power requirement, as well as on the relative contributions of convection and radiation to heat transfer from the surface.
Consider a two dimensional flow X-Y plane (no motion in Z direction). The Velocity field is going by : Y/(X^2+Y^2) and V= -x/(X^2+Y^2). Determine the equation of streamline passing through point X=0 and Y=5. Calculate the fluid acceleration
The two particles collide with each other as shown. Find the velocities of A and B after impact.
a thin-flat plate having a length of l 10 cm is heated by a constant-heat flux from the bottom and cooled by an air
If the cycle operates in steady flow with a power output of 20 kW, what is the steam flow rate?
Ask one or two engineers what kinds of oral presentations they make on a fairly regular basis. How long do they talk each time? What do they talk about? Who is their audience? Do they use any graphic aids or handouts while presenting? What kinds of f..
a heat pump operates on the ideal vapor compression refrigeration cycle with r-134a as the working fluid. the load on
What is the molar concentration of the complex in a solution that has the absorbance described in (a) when measured at 470 nm in a 2.50-cm cell?
The figure shows a simply supported roof truss of length a and height h with vertical loads P at nodes E, F and G, respectively. The symmetric structure of the interior bars is determined by the angles α and β.
The ratio of rotor exit mean diameter to rotor inlet tip diameter is chosen as 0.49 and the required rotational speed as 24,000 rev/min.
water is flowing at 10 cms in pipe with a diameter of 5 cm when it hits a bifurcation some of the water travels down
a 960 N.m moment is required to straghten a post. if the capacity of a winch puller is 2400N, determine the minimum value to create the specified moment.
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