9 : 1
17 : 1
23 : 1
29 : 1
B. 17 : 1
Adiabatic
Quasi-static
Isothermal
Isentropic
Cast iron
Soft brass
Round specimen of ductile metal
Flat tensile specimen of ductile metal
Gear
Centrifugal
Reciprocating
Plunger
Polystyrene
Melamine
Polystyrene
Polyurethane
Easily available
Not soluble in blood at high pressure
Lighter than nitrogen
Completely miscible with oxygen
Cotton, silk and paper
Asbestos, glass, porcelain and mica
Rubber and polymeric resins
All refractory materials
Surface finish of the sheet is poor
Sheet material has been given substantial spring back
Starting sheet has planer anisotropy due to its texture
Starting sheet has normal anisotropy due to its texture
Electrolytic reduction
Calcium reduction
Magnesium reduction
Thermal dissociation
Cold cracking of a weld is due to the presence of hydrogen gas in the weld
True stress is given by, σ = σE (1 + εE), where σE and εE are engineering stress and engineering strain respectively
Phosphorous can be easily recovered in the iron blast furnace
High residual stress at the surface is beneficial for fatigue properties of a material
Condensation
Deaeration
Scavenging
Exhaust
Density
Thermal diffusivity
Viscosity
Thermal conductivity
Fracture
Dislocation
Slip
Twinning
Glass fibre in a polymer matrix
Glass fibre in a metallic matrix
Polymer fibre in a glassy matrix
Both 'b' & 'c'
Relative humidity increases
Dew point remains constant
Dry bulb & wet bulb temperature increases
Both 'b' & 'c'
Higher, as it gives higher wavelength
Lower, as it gives higher wavelength
Higher, as it gives shorter wavelength
Lower, as it gives shorter wavelength
Cementite
Austenite
Martensite
Pearlite
Molybdenum
Chromium
Vanadium
Silicon
Descaling
Shot blasting
Pickling
Skimming
550-600
450-500
350-400
250-300
9 : 1
17 : 1
23 : 1
29 : 1
Crystallise faster
Resist greater tensile stress at room temperature
Have higher melting temperature
Are better conductor of electricity at higher temperature
Decreases with increase in strain hardening tendencies
Decreases with increase in hardness, in general
Depend on the composition, microstructure and physical & mechanical properties
Decreases with increases in tensile strength & decrease in grain size
Conduction
Radiation
Natural convection
Forced convection
Tensile
Fatigue
Impact
None of these
Cant be used in the form of pressure sensitive tapes
Cant join two dissimilar metals
Cure instantaneously after application on a surface
None of these
Pressure falls below the vapour pressure
Pressure becomes very high
Temperature becomes low
All 'a', 'b' & 'c'
Shear stress is maximum
Velocity gradient is flat
Density variation is maximum
Shear stress is zero
Grain refinement
Increasing corrosion resistance
Reducing porosity
Improving fluidity
Inversely with thermal conductivity
Directly with heat transfer co-efficient
Directly with thermal conductivity
Inversely with the dimension of the solid
Exchange between two liquid phases
Exchange between a gaseous phase and a liquid phase
Exchange between a liquid phase and an organic resin phase
Exchange between a solid phase and a gas phase