NEW
Font size
Worksheets28/01/21-Day 16- SM-Introduction, Mechanical properties
Total questions: 16
Worksheet time: 15mins
The property of a material to regain its original shape after removing external force is known as
Plasticity
Elasticity
Ductility
Conductivity
The property of a material which does not regain its original shape after removing external force is known as
Plasticity
Elasticity
Ductility
Conductivity
Which of the following properties time-dependent?
Elasticity
Brittleness
Hardness
Creep
The property of a material by virtue of which it can be beaten or rolled into plates is called
Ductility
Malleability
Elasticity
Plasticity
Creep is
Gradual increase of plastic strain with the time at constant load
Gradual increase of elastic strain with the time at constant load
Gradual increase of plastic strain with time at varying load
Gradual increase of elastic strain with time at varying load
The property of a material by which it can be drawn into thin wires is
Ductility
Malleability
Plasticity
Elasticity
Which test is conducted to measure the ability of a material to resist scratching, abrasion, deformation and indentation?
Fatigue test
Creep test
Compression test
Hardness test
Which of the following pairs is not correctly matched?
Visco-elastic: small plastics zone material
Strain hardening material: stiffening effect felt at some stage
Orthotropic material: different properties in three perpendicular directions
Isotropic material: same physical property in all directions at a point
The material in which large deformation is possible before the absolute failure or rupture is termed as
Brittle
Elastic
Ductile
Plastic
The material which fail without appreciable deformation is called
Brittle
Elastic
Ductile
Plastic
Stress which produces a compression in lateral direction is
Volumetric stress
Compressive stress
Tensile stress
Shear stress
Match List-1 with List-2
List-1
A. Ductility
B. Brittleness
C. Tenacity
D. Toughness
List-2
1. Failure without warning
2. Drawn permanently over great changes of shape without rupture
3. Absorption of energy at high stress without rupture
4. High tensile strength
A1 B2 C4 D3
A1 B2 C3 D4
A2 B3 C4 D1
A2 B1 C4 D3
Consider the following salient points in a stress strain curve of a mild steel bar
1. Yield point
2. Breaking point
3. Yield Plateau
4. Proportional limit
5. Ultimate point
The correct sequence in which they occur while testing mild steel bar in tension from initial zero strain to failure is
4, 1, 2, 3 and 5
1, 4, 3, 5 and 2
4, 1, 3, 5 and 2
1, 4, 2, 3 and 5
1. A mild steel tension specimen has a cup and cone fracture at failure.
2. Mild steel is weak in shear and failure of specimen in shear takes place at 45° to the direction of the applied tensile force.
Both 1 and 2 are true and 2 is the correct explanation of 1.
Both 1 and 2 are true and but 2 is not a correct explanation of 1.
1 is true but 2 is false.
1 is false but 2 is true.
Poisson's ratio is defined as the ratio of
Longitudinal stress and longitudinal strain
Lateral strain and longitudinal strain
Longitudinal stress and lateral stress
Lateral stress and longitudinal stress
The stress at which a material fractures under large number of reversals of stress is called
Endurance limit
Ultimate strength
Creep
Residual stress
