A long cylinder 10 cm in diameter with an initial temperature of 700 K is suddenly immersed into water with a temperature of 300 K giving a convective heat transfer coefficient of 80 W/m2-K. Assume k = 22 W/m-K, Cp=536 J/kg-K, and a density of 8050 kg/m3 for the cylinder material. a. Determine the surface and centerline temperatures of the cylinder 10 minutes after immersion
b. Calculate the heat transferred from the cylinder during this time interval.
c. Calculate the maximum heat transfer (Q max).

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.

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.