I need the answer as soon as possible 1.6 (A) An l-seetion girder is constructed from two 80 mm x 12 mm flanges joined by an 80 mm x 12 mm web.Four such girders are mounted vertically one at each corner of a horizontal platform which the girders support. Theplatform is 4 m above ground level and weighs 10KN. Assuming that each girder supports an equal share of the load,determine the maximum compressive stress set up in the material of each girder when the platform supports anadditional load of 15KN. The weight of the girders may notr be neglected. The density of the cast iron from which thegirders are constructed is 7470 kg/m'.1.7 (A). A bar ABCD consists of three sections: ABis 25 mm square and S0 mm long, BC is of 20 mm diameter and40 mm long and CDis of 12 mm diameter and 50 mm long. Determine the stress set up in cach section of the bar whenit is subjected to an axial tensile load of 20KN. What will be the total extension of the bar under this load? For the barmaterial, E - 210GN/m.[2.46 MN/m][32, 63.7, 176.8 MN/m, 0.062 mm.]1.8 (A). A steel bar ABCD consists of three sections: AB is of 20 mm diameter and 200 mm long. BC is 25 mmsquare and 400 mm long, and CD is of 12 mm diameter and 200 mm long. The bar is subjected to an axial compressiveload which induces a stress of 30 MN/m on the largest cross-section. Determine the total decrease in the length ofthe bar when the load is applied. For steel E - 210GN/m.[0.272 mm.)1.9 (A) During a tensile test on a specimen the following results were obtained:Load (kN)Extension (mm)15400.12730505560650.050.0940.1571.7782.793.81Load (kN)Extension (mm)7075808280705.087.6212.716.019.05229Diameter of gauge length = 19 mmDiameter at fractureGauge length - 100 mmGauge length at fracture = 121 mm- 16.49 mmPlot the complete load extension graph and the straight line portion to an enlarged scale. Hence determine:(a) the modulus of elasticity,(b) the percentage elongation;(c) the percentage reduction in area;(d) the nominal stress at fracture;(e) the actual stress at fracture,(f) the tensile strength.(116 GN/m', 21%: 24.7%: 247 MN/m'; 328 MN/m?; 289 MN /m*]1.10 Figure 1.24 shows a special spanner used to tighten screwed components. A torque is applied at the tommy-bar and is transmitted to the pins which engage into holes located into the end of a screwed component.ja) Using the data given in Fig. 1.24 calculate:(6) the diameter D of the shank if the shear stress is not to exceed SON/mm',(ii) the stress due to bending in the tommy-bar,(iii) the shear stress in the pins.(b) Why is the tommy-bar a preferred method of applying the torque?[CG] [9.14 mm; 254.6 MN/m?; 398 MN/m 1

As per our guideline we suppose to answer only one question. kindly repost the other questions as…

1.6 (A) An l-seetion girder is constructed from two 80 mm x 12 mm flanges joined by an 80 mm x 12 mm web. Four such girders are mounted vertically one at each corner of a horizontal platform which the girders support. The platform is 4 mabove ground level and weighs 10KN. Assuming that cach girder supports an equal share of the load, determine the maximum compressive stress set up in the material of each girder when the platform supports an additional load of 15KN The weight of the girders may not be neglected The density of the cast iron from which the girders are constructed is 7470 kg/m. [2.46 MN/m]

1.6 (A) An l-seetion girder is constructed from two 80 mm x 12 mm flanges joined by an 80 mm x 12 mm web. Four such girders are mounted vertically one at each corner of a horizontal platform which the girders support. The platform is 4 mabove ground level and weighs 10KN. Assuming that cach girder supports an equal share of the load, determine the maximum compressive stress set up in the material of each girder when the platform supports an additional load of 15KN The weight of the girders may not be neglected The density of the cast iron from which the girders are constructed is 7470 kg/m. [2.46 MN/m]

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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