Pressure Vessels Quiz

What is the primary function of a pressure vessel?

• To contain a fluid at a lower pressure than the environment

• To contain a fluid at the same pressure as the environment

• To contain a fluid at a higher pressure than the environment

• To contain a solid material

In a cylindrical pressure vessel, which stress is responsible for trying to expand the circular cross-section?

• Radial stress

• Longitudinal stress

• Hoop stress

• Shear stress

What is the equation for hoop stress in a cylindrical pressure vessel?

• PD over 4T

• PD over 2T

• 2PD over T

• P over DT

Why are cylindrical pressure vessels more likely to fail along their length?

• Because longitudinal stress is higher than hoop stress

• Because hoop stress is higher than longitudinal stress

• Because radial stress is higher than hoop stress

• Because they are made of weaker materials

What is the 'magic angle' used for in pressure vessels?

• To minimize radial stress

• To optimize the balance between hoop and longitudinal stresses

• To reduce the cost of manufacturing

• To increase the thickness of the vessel

What is the main advantage of spherical pressure vessels over cylindrical ones?

• They require less material

• They are easier to transport

• They have a uniform stress distribution

• They are cheaper to manufacture

What simplification is made regarding hoop stress in thin-walled pressure vessels?

• It is considered constant through the wall thickness

• It is considered to be zero

• It is considered to vary linearly through the wall thickness

• It is considered to be equal to radial stress

What is the significance of radial stress in thick-walled pressure vessels?

• It is significant and cannot be ignored

• It can be ignored as it is negligible

• It is always equal to longitudinal stress

• It is always equal to hoop stress

What defines a thin-walled pressure vessel?

• Wall thickness is equal to the diameter

• Wall thickness is less than 5% of the diameter

• Wall thickness is more than 20% of the diameter

• Wall thickness is more than 10% of the diameter

Which equation is used for stress calculations in thick-walled pressure vessels?

• PD over 4T

• PD over 2T

• Lame's equation

• Euler's equation