A3.in. schedule 40 commercial steel pipe (with an actual inside diameter of 3.068 in.) carries 210of sae 40 crankcase oil at the rate of 6.0 gal/min. the oil specific gravity is 0.89, and the absolute viscosity is 6.6×10-7lb s/ft2. calculate the pipe size required to carry the same flowrate at approximately one-half the pressure drop of the 3-in. pipe. both pipes are horizontal.

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

For each of the following process: a) sketch the p-v diagram, b)sketch t-s diagram, c) sketch t-v diagram, d) sketch the boundary work on one of the diagrams (a, b or c) and e) sketch the reversible heat transfer on one of the diagrams (a, b or c): 1- isobaric process from compressed liquid to superheated vapor 2- isothermal process from compressed liquid to superheated vapor 3- isentropic process from compressed liquid to superheated vapor