Acylindrical specimen of some alloy 8 mm (0.31 in.) in diameter is stressed elastically in tension. a force of 15,700 n (3530 lbf) produces a reduction in specimen diameter of 5 * 10^-3 mm (2 * 10^-4 compute poisson's ratio for this material if its modulus of elasticity is 140 gpa (20.3 * 10^6 psi).

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives