A round casting is 0.2 m in diameter and 0.5 m in height (h). Another casting of the same metal is elliptical in cross section, with a major-to-minor axis ratio (a/b) of 2, and has the same height and cross-sectional area as the round casting. Both pieces are cast under the same conditions. What is the difference in the solidification times of the two castings? Note: The surface area of the ellipse-based part is given by A=2pi*a*b+2pi*sqrroot(a^2+b^2)*h
A round casting is 0.2 m in diameter and 0.5 m in height (h). Another casting...
(Metal-Casting Processes) (Groups) 10.47 A round casting is 0.2 m in diameter and 0.75 m in length. Another casting of the same metal is elliptical in cross-section, with a major-to-minor axis ratio of 2, and has the same length and cross-sectional area as the round casting. Both pieces are cast under the same conditions. What is the difference in the solidification times of the two castings? 10.48 A cylinder with a diameter of 50 mm and a height of 75...
Problem 2 (a): A mold has a downsprue of length - 6.0 in. The cross-sectional area at the bottom of the sprue is 0.5 in'. The sprue leads into a horizontal runner that feeds the mold cavity, whose volume = 75 in'. Determine (a) the velocity of the molten metal flowing through the base of the downsprue, (b) the volume rate of flow and (c) the time required to fill the mold cavity. Problem 2(b): The total solidification times of...
Total pipe length (including the vertical and horizontal sections) is L = 16 m. Pipe diameter D = 8 cm, pipe cross‐sectional area Apipe = 2 x 10‐4 m2, pipe roughness e = 0.08 mm. There is a streamline from location (1) to location (2) with an elevation change of H = 12 m. Reservoir surface area Asurf = 12 m2. Calculate the flowrate Q in the system using the recursive method (guess f and check). 1) Water flows steadily...
Consider the rectangular beam shown below 25 kN/m 10 kN 0.2 m 0.2 m 0.5 m 1 m (10pts) Find the critical location or segment of the beam where stresses will be maximum. (10pts) The beam has a square cross section with a side of 25mm. Find the principal stresses at the top or bottom of the cross section, at the location or segment found in point 2 (10pts) The beam is made of 52100 chromium steel, with a yield...
A tunnel of length L = 130 m, height H = 7.3 m, and width 5.5 m (with a flat roof) is to be constructed at distance d = 47 m beneath the ground. (See the figure.) The tunnel roof is to be supported entirely by square steel columns, each with a cross-sectional area of 893 cm2. The mass of 1.0 cm3 of the ground material is 2.1 g. (a) What is the total weight of the ground material the...
A current filament on the z axis carries a current of 7 mA in the az direction, and current sheets of 0.5 az A/m and −0.2 az A/m are located at ρ = 1 cm and ρ = 0.5 cm, respectively. Calculate H at: (a) ρ = 0.5 cm; (b) ρ = 1.5 cm; (c) ρ = 4 cm. (d) What current sheet should be located at ρ = 4 cm so that H = 0 for all ρ >...
Water flows from one large reservoir to another via a pipeline which is 0.9 m in diameter, 15km long, and for which f-0.04. The difference in height between the water surface levels in the two reservoirs is 50m. (a) Ignoring the minor losses in the pipeline, calculate the flow rate between the two reservoirs. (b) Assuming that the pipeline entrance and exit are sharp and that the minor losses are as in Table 1, calculate the discharge now. What is...
The tank pictured in Figure 2 with height H and diameter D contains water, which drains through a small round hole with diameter d. Torricelli’s law states that the average velocity v of the draining water is , where g is the acceleration of gravity and h the water level. Derive an expression to describe the time taken for the tank to drain, if it is initially full of water. Future interplanetary astronauts could use the tank as a simple...
Assignment 01 TOT Mechanical Properties of Materials 1. A tensile test specimen has a gage length = 50 mm and its cross-sectional area = 100 mm. The specimen yields at 48,000 N, and the corresponding gage length - 50.23 mm. This is the 0.2 ent yield point. The maximum load of 87,000 N is reached at a gage length 64.2 mm. Determine (a) yield strength, (b) modulus of elasticity, and (c) tensile strength. (d) If fracture occurs at a gage...
can i get the right solution please Question 1: (25 marks) A ring of steel has an external diameter of 24cm and a square cross section of 3cm by 3cm, as she m, as shown in Figure 1. A gap of 3mm exists on the ring. A copper bar of 18cm x 3cm x 3cm is fitted inside Titted inside and across the ring with negligible gap. Account for fringing by using the effective area of the air approximated by:...