1. Draw the complete shear and bending moment diagrams. A 1 m 600 N 2m 600 N -1 m- B

te wit une de Answer true or false: The orientation of the neutral axis of a beam undergoing pure bending is dependent only on the geometry of the beam.

An alloy consisting of completely soluble cadmium (Cd) and zinc (Zn) in the liquid state, but neither of them dissolves in each other in the solid state. the table shown below shows the solidification temperatures for various alloys of cadmium and zinc. 1. Draw the equilibrium diagram according to the information given and data in the table and indicating all important temperature and phases. 2. Find the percentage of each phases and percentage of constituents of the alloy that contain 60 % Zn and at a temperature 300 °C. 3. Find the melting point for the following alloys 20 % Cd, 80% Cd 4. Draw the internal structure, noting the phases of the following alloys A) 30 % Cd at 290 °C b) 60 % Cd at room temperature. % of Zinc in alloy Start of solidification ("C) End of solidification ("C) 0 10 14 20 30 40 50 60 321 290 266 275 293 310 328 345 70 80 90 100 362 390 401 419 266 266 266 266 266 266 266 266 266 266 266 266

6.8 Suppose that a cast Al-1 wt% Si alloy, contains equilibrium Si particles 1 µm in diameter. This alloy is to be heat treated by first putting all of the Si particles back into solution. (a) Draw a set of schematic curves indicating what will happen during this process. Temperature °C (b) Indicate the initial conditions, the final conditions (once a new equilibrium is reached) and the boundary conditions during dis- solution. (c) Estimate how long the alloy should be held at 550°C so as to ensure that all of the Si is dissolved. Al-Si 1500 1300 1100 900 700 500 300 660.452°C 0 -(A1) 10 AI 12.6 10 20 20 30 30 Atomic Percent Silicon 40 50 Thom L 60 Them 577+1°C 40 50 60 Weight Percent Silicon 70 70 80 80 90 90 100 1414°C (Si)- 100 Si

3. Explain different types of equilibriums with examples.

Phases that exist on the right side of eutectic point of an invariant reaction line are called: Select one: a. post-phase b. hypo-phase c. pro-phase O d. hyper-phase

How can the shear force, be determined from the method of sections andthe equations of equilibrium?

What is neutral equilibrium?

Parvinbhai

Consider the phase diagram below. The three points A, B, and C are at concentrations of 27, 31.9, and 33.8 wt% Ni respectively. The ends of the tie line are at C1 = 25% wt% Ni and C2 = 35 wt% Ni. What are the weight fractions of the alpha phase at A and the L phase at B, as well as the alpha phase/L phase ratio at C? T(°C) 1300-L (liquid) 1200 20 ABC L + a C1 30 S C2 liquidus 40 L + a solidus α (solid). O a. Walpha=0.12; WL=0.41; Walpha/WL = 9.41 O b. Walpha=0.27; WL-0.26; Walpha/WL = 11.11 O c. Walpha=0.15; WL-0.26; Walpha/WL = 11.80 Od. Walpha=0.20; WL-0.31; Walpha/WL = 7.33 50 wt% Ni