Engineering Answers

What welding process will you recommend to weld the circumferential weld holding the bottom attachment ( weld 2) . Design the welding geometry to weld the cylinder body to ( weld 2) the bottom plate. Assume cylinder wall thickness to be 0.5” and the bottom plate thickness to be 1 inch. Show the welding symbol. Assume cylinder diameter to be 2 inches

Discuss 5 different desirable characteristics of aggregate of aggregate used in Portland cement concrete.

What are the three mineralogical or geological classifications of rocks, and how are they formed?

a 65 mm diameter solid shaft is to be welded to a flat plate by a fillet weld around the circumference of the shaft. determine the size of the weld if the torque on the shaft is 3 kn m. the allowable shear stress in the weld is 70 mpa.

a 125 x 95 x 10 mm angle is joined to a frame by two parallel fillet welds along the edges of 150 mm leg. the angle is subjected to a tensile load of 180 kn. find the lengths of weld if the permissible static load per mm weld length is 430 n 

A solid catalyzed gaseous reaction has the form A + B ↔ C (6) assuming the operating condition of the catalyst is such that the external and internal diffusion steps have negligible pressure gradients, propose rate equations for the following cases: (a) The adsorption of A on the catalyst is controlling (b) The surface interaction between adsorbed A and adsorbed B is controlling (c) The desorption of C from the surface is controlling

The reduction of CO2 with H2 on Pt catalysts is described by the equation CO2(G) + H2 (ads) → H2O + CO According to which well-known mechanism does this hydrogenation proceed (with explanation)?

The following data was obtained for the adsorption of nitrogen on alumina at 77 K. The vapor pressure of N2 at 77 K is 1 atm. Estimate the surface area (m2/g) by BET method assuming the area occupied by one N2 molecule to be 16.2 x10-20 m2. (6) Pressure, mm Hg 8 30 50 102 130 148 233 258 330 442 480 Volume adsorbed, cm at STP 103 3 116 130 148 159 163 188 198 221 270 294

A balloon is rising vertically upward with a uniform velocity 'u' as shown At a certain instant, a ball No. 1 is dropped trom it, which takes a 4 seconds to reach the ground. The moment this ball strikes the ground, another ball is dropped from the balloon and this 2nd ball takes 5 seconds to reach the ground. Find the velocity of the balloon 'u' and height from which both the balls must have been dropped.

A continuous cable (diameter 6 mm) with tension force T is attached to a horizontal frame member at B and C to support a sign structure, Fig. 1. The cable passes over a small pulley at D. The wire is made of a copper alloy, and the stress-strain relationship for the wire is (a) Find the axial normal strain in the cable and its elongation due to the load W = 6.8 kN (b) If the forces are removed, what is the permanent set of the cable. Hint: Start with constructing the stress-strain diagram and determine the modulus of elasticity, E and the 0.2% offset yield stress