Consider two cylindrical rods 'A' and 'B' subjected to equal axial load 'P'. The cross-section area and lengths of both rods are identical. The rod 'A' is made of Aluminum (E=10 Msi, v =0.33) and rod 'B' is made of Steel (E=30 Msi, v =0.29). From the below list, select the statements which are true? a. The normal strain in both the rods will be equal.
b. The normal stress in both the rods will be equal.
c. The normal stress in rod 'A' will be greater than the normal stress in rod 'B'.
d. The elongation of rod 'A' will be greater than the elongation of rod 'B'.
e. The normal stress in rod 'A' will be less than the normal stress in rod 'B'.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

The higher the astm grain size number, the finer the gran is. a)-true b)-false