Higher ahear plane angle means lower shear force, thus, lower cuttins forces, power, and temperature.

$($rrue$)$

False

Metal Forming is a sroup of manufacturing processes in which the plastic deformation changes the shape of the workplece.

True

Both strength $(K)$ and straln hardening $(n)$ are reduced at higher temperatures.

Strain rate in metal forming is referred to the speed of deformation divided by the instantaneous height of the workplece being deformed.

In metal forming process the metal takes a shape determined by the geometry of the die.

Sheet Metalworking is often called pressworking.

True

False

Flow stress is described as instantaneous value of stres material.

Grue

False

Circle the correct answer$/$s$.$

a$)$ Smaller particle sizes generally show greater friction and steeper angles.

b$)$ Spherical shapes have the lowest interparticle friction.

c$)$ Smaller particle sizes generally show lower friction and steeper angles.

d$)$ Larger particle sizes generally show lower friction and steeper angles.

Circle the correct answer$/$s$.$ If powders of various sizes are present,

a$)$ Thus, a higher packing factor

b$)$ Thus, a lower packing factor

$($c$)$ Thus, a higher interparticle friction

d$)$ Thus, a lower interparticle friction

Circle the correct answer$/$s$.$

a$)$ Blending: powders of the same chemistry but possibly different particle sizes are intermingled.

b$)$ Blending: powders of different chemistries but possibly the same particle sizes are intermingled.

c$)$ Mixing: powders of different chemistries are combined.

d$)$ Mixing: powders of the same chemistries are combined.

What are the properties of Ceramics? Circle the correct answer$/$s$.$

a$)$ High hardness

b$)$ High melting temperatures

c$)$ High ductility.

d$)$ Chemical stability.