A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be_________________?

A. ultimate tensile stress
B. proof stress
C. stress at yield point
D. stress at elastic limit
E. tensile stress

A. principal stress
B. tensile stress
C. compressive stress
D. shear stress
E. no stress

A. their total sum is zero
B. two resolved parts in two directions at right angles are equal
C. sum of resolved parts in any two per-pendicular directions are both zero
D. all of them are inclined equally
E. none of the above

A. 2n-3
B. n-l
C. ‘2n-l
D. n – 2
E. 3n-2
where n = number of joints in a frame

A. arm of man
B. pair of scissors
C. pair of clinical tongs
D. all of the above
E. none of the above