Correct Answer - Option 1 : Tensile
Concept-
For thick cylinders such as guns, pipes to hydraulic presses, high pressure hydraulic pipes the wall thickness is relatively large and the stress variation across the thickness is also significant.
Hoop or Circumferential Stress– This is directed along the tangent to the circumference and tensile in nature.
The hoop stress induced in a thick cylinder due to radial pressure will be tensile in nature.
Longitudinal Stress– This stress is directed along the length of the cylinder. This is also tensile in nature and tends to increase the length.
Radial pressure– It is compressive in nature. Its magnitude is equal to fluid pressure on the inside wall and zero on the outer wall if it is open to atmosphere.
