Aviscous liquid is sheared between two parallel disks of radius r, one of which rotates while the other is fixed. the velocity field is purely tangential, and the velocity varies linearly with z from vθ = 0 at z= 0 (the fixed disk) to the velocity of the rotating disk at its surface ðz=hþ. derive an expression for the velocity field between the disks

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false