Quiz for CEM

Which one is a dimensionless quantity?

• Stress

• Modulus of Elasticity

• Strain

• Modulus of Rigidity

Hooke’s law is valid:

• Up to fracture point

• Only in elastic region

• Only in plastic region

• Valid for all cases

What's the correct relation for stress and strain?

• Stress/Strain = Modulus of elasticity

• Strain/Modulus of elasticity = Stress

• Stress x Strain = Modulus of elasticity

• Modulus of elasticity/Stress = Strain

Which property of material is measured from the slope of the stress–strain curve in elastic region?

• Poisson's ratio

• Yield Strength

• Modulus of resilience

• Modulus of Elasticity

A 2 m steel rod elongates by 2 mm. The strain is:

• 0.01

• 0.001

• 0.02

• 0.0002

A force of 50 kN acts on a cross-sectional area of 1 m². What is the stress?

• 50 MPa

• 50 Pa

• 5000 Pa

• 50 KPa

A bar is elongated under a tensile load. The stress on the bar is 500 KPa whereas the strain is 0.02. What is the value of Young's Modulus?

• 2500 KPa

• 25000 KPa

• 250 KPa

• 200 KPa