Hardness of a material indicates its resistance to: (a) flow of electrons (b) flow of heat (e) penetration by magnetic field (d) elastic and plastic deformation (e) penetration by nuclear radiation

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k

Analyze the factors that influence the choice between the following pairs of processes to make the products indicated: i) sand casting versus die casting of an electric-motor housing ii) thread rolling versus machining of a bolt for high-strength application. (co3/c5)