Manufacturing - 10

The ability of a material to absorb energy when elastically deformed and to return it when unloaded is called __________

• Elasticity

• Resilience

• Plasticity

• Strain resistance

The maximum strain energy stored at elastic limit is __________

• Resilience

• Elasticity

• Proof resilience

• Malleability

What is the modulus of resilience?

• The ratio of resilience to volume

• The ratio of proof resilience to the modulus of elasticity

• The ratio of proof resilience to the strain energy

• The ratio of proof resilience to volume

Resilience of a material plays important role in which of the following?

• Thermal stress

• Shock loading

• Fatigue

• Pure static loading

The property of a material which enables it to absorb energy and deform plastically without fracture is ______

• Stiffness

• Toughness

• Hardness

• Resilience

What is the SI unit of tensile toughness?

The toughness of material depends on _____ and _____ of material.

• Ductility, yield strength

• Ductility, tensile strength

• Stiffness, tensile strength

• Hardness, yield strength

Which factor decreases toughness of material?

• Alloying

• Temperature

• Grain refinement

• Strain rate

Which material, would you choose for high toughness property on lower temperatures?

• Steel

• Aluminium

• Zinc

• SiC

What is the reason of low toughness of grey cast iron?

• Strain rate

• Notch effect

• Grain size effect

• Crystal structure