What factor can reduce the required force during rolling?

A$)$ Higher rolling speed

B$)$ Higher draft

C$)$ Smaller roll radius

D$)$ Higher friction

What is the primary material used in hot rolling?

A$)$ Aluminum

B$)$ Copper

C$)$ Steel

D$)$ Lead

Which term describes the squeezing of a metal

workpiece between two rolls?

A$)$ Extrusion

B$)$ Bending

C$)$ Drawing

D$)$ Flat rolling

What is a primary advantage of cold rolling?

A$)$ High deformation

B$)$ Superior surface finish

C$)$ Faster production speed

D$)$ Higher draft

What is the coefficient of friction in cold rolling

typically?

A$)0\mathrm{.}1$

B$)0\mathrm{.}2$

C$)0\mathrm{.}3$

D$)0\mathrm{.}4$

Which type of mill is commonly used for high

production of metal sheets?

A$)$ Two$-$high mill

B$)$ Tandem mill

C$)$ Three$-$high mill

D$)$ Cluster mill

What happens to the width of a metal piece during

rolling?

A$)$ It increases

B$)$ It decreases

C$)$ It stays the same

D$)$ It depends on the rolling method

What is the approximate temperature range for hot

rolling steel?

A$)400-600C$

B$)600-800C$

C$)800-1200C$

D$)1200-1600C$

What does the term 'neutral point' refer to in rolling?

A$)$ The point where friction is minimized

$-$B$)$ The point where the velocity of the roll equals the

velocity of the workpiece

C$)$ The point where maximum draft is applied

D$)$ The point where the material spreads