jointless section

homogeneous section

perfect section

seamless section.

equal to the hoop stress

twice the hoop stress

half of the hoop stress

one-fourth of hoop stress

maximum calculated value

minimum calculated value

mean value

extreme value

maximum torque it can transmit

number of cycles it undergoes before failure

elastic limit up to which it resists torsion, shear and bending stresses

torque required to produce a twist of one radian per unit length of shaft

from maximum at the center to zero at the circumference

from zero at the center to maximum at the circumference

from maximum at the center to mini-mum at the circumference

from minimum at the centre to maximum at the circumference