Podcast
Questions and Answers
What is the force that causes a wire to break called?
What is the force that causes a wire to break called?
- Working stress
- Breaking stress
- Tensile strength
- Breaking force (correct)
What is the temporary loss of elastic properties due to repeated alternating deforming forces called?
What is the temporary loss of elastic properties due to repeated alternating deforming forces called?
- Stress
- Elastic after effect
- Plasticity
- Elastic fatigue (correct)
Why does a wire of double the thickness of another wire bear a maximum force four times that of the thinner wire?
Why does a wire of double the thickness of another wire bear a maximum force four times that of the thinner wire?
- Because the area of cross-section of the thicker wire is four times that of the thinner wire (correct)
- Because the material of the thicker wire is stronger
- Because the length of the thicker wire is double that of the thinner wire
- Because the thickness of the wire is directly proportional to the breaking force
Why do spring balances show wrong readings after they have been used for a long time?
Why do spring balances show wrong readings after they have been used for a long time?
What is the significance of the point B on the stress-strain curve?
What is the significance of the point B on the stress-strain curve?
What is the time delay in regaining original shape after removal of deforming force called?
What is the time delay in regaining original shape after removal of deforming force called?
What is the property of matter that enables it to regain its original shape and size after removal of deforming force?
What is the property of matter that enables it to regain its original shape and size after removal of deforming force?
What is the ratio of normal stress to volumetric strain within the elastic limits called?
What is the ratio of normal stress to volumetric strain within the elastic limits called?
What occurs when a force is applied to a body, resulting in internal restoring forces?
What occurs when a force is applied to a body, resulting in internal restoring forces?
Why is the working stress of a wire always kept lower than the breaking stress?
Why is the working stress of a wire always kept lower than the breaking stress?
What is the nature of stress in a beam when it is bent?
What is the nature of stress in a beam when it is bent?
What happens to a material when it is subjected to a stress that exceeds its elastic limit?
What happens to a material when it is subjected to a stress that exceeds its elastic limit?
What is the elasticity of a rigid body?
What is the elasticity of a rigid body?
What is the bulk modulus of elasticity of a gas?
What is the bulk modulus of elasticity of a gas?
What is the torque required to produce a unit twist in a hollow shaft?
What is the torque required to produce a unit twist in a hollow shaft?
What is the work done in twisting a cylinder through an angle θ?
What is the work done in twisting a cylinder through an angle θ?
What is the range of Poisson's ratio in theoretical value?
What is the range of Poisson's ratio in theoretical value?
What is the relation between Y, k, η and σ?
What is the relation between Y, k, η and σ?
What happens to the radius of a bar when it is stretched?
What happens to the radius of a bar when it is stretched?
What is the expression for volumetric strain?
What is the expression for volumetric strain?
What is the angle of twist in torsion of a cylinder?
What is the angle of twist in torsion of a cylinder?
What is the elastic constant related to the change in volume of a material?
What is the elastic constant related to the change in volume of a material?
What is the torsional rigidity of a cylindrical shell proportional to?
What is the torsional rigidity of a cylindrical shell proportional to?
What is the work done in twisting a cylinder through an angle θ proportional to?
What is the work done in twisting a cylinder through an angle θ proportional to?
What is the unit of volumetric strain?
What is the unit of volumetric strain?
What is the torque required to produce a unit twist in a solid shaft?
What is the torque required to produce a unit twist in a solid shaft?
What is the range of Poisson's ratio in theoretical value?
What is the range of Poisson's ratio in theoretical value?
If a long bar has a length L and radius r, what is the expression for the volumetric strain?
If a long bar has a length L and radius r, what is the expression for the volumetric strain?
What is the modulus of elasticity related to the change in shape of a material?
What is the modulus of elasticity related to the change in shape of a material?
What is the relationship between Y, k, η, and σ?
What is the relationship between Y, k, η, and σ?
