During the plastic deformation portion of a uniaxial compression test, two cylindrical specimens first maintain its cylindrical shape (decreasing in length and increasing in diameter), then: a. Specimen 1 transitions into barreling (the specimen attains a barrel shape) and the breaks. b. Specimen 2 breaks without barreling.
Give, in two separate paragraphs with no less than eight (8) lines each, your explanation for these two behaviors.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

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.