SECOND YEAR MRAC

Which is elastic material?
Nylon
Polystyrenes
Celluloid
Polycarbonates
Which is thermo plastic material?
Butyl rubber
Nylon
Neoprene
Vinyl polymers
What is the maximum percentage of stretch of its original length is allowable for elastic materials?
100 %
200 %
300 %
400 %
What is the unit of strain?
Kg/cm²
Newton/metre²
Metre
No unit
What is the ratio of change in length to original length?
Linear strain
Lateral strain
Volumetric strain
Poissonʹs ratio
What is the ratio between lateral strain and longitudinal strain
Hooks law
Youngʹs modulus
Bulk modulus
Poissonʹs ratio
Which one is the ratio of stress?
Load and area
Load and direction
Load and diameter
Load and time
Which force acts on rivets?
Tensile force
Compressive force
Shear force
Bending force
Which type of stress?
Tensile stress
Compressive stress
Shear stress
Torsional stress
What is the formula for bulk modulus?
Tensile stress/Tensile strain
Compressive stress/Compressive strain
Volumetric stress/Volumetric strain
Shear stress/Shear strain
Which law states that within elastic limit stress is directly proportional to strain?
Newtons law
Hooks law
Joules law
Charles law
What is the term used for maximum stress attained by a material before rupture?
Tensile stress
Compressive stress
Working stress
Ultimate stress
What is the ratio between ultimate stress to working stress
Bulk modulus
Youngʹs modulus
Factor of safety
Modulus of rigidity
What is the ratio of shear stress to shear strain?
Modulus of elasticity
Modulus of rigidity
Bulk modulus
Yield point
Which is thermosetting plastic
Vinyl polymers
Polystyrenes
Celluloid
Melamine resins
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