1.2 to 2.5
4.5 to 6.2
7.5 to 8.5
10.5 to 15.5
B. 4.5 to 6.2
High pressure & load
Low pressure & load
High temperature
Large surface wear
Ability to absorb shock
Capacity to store energy
Ratio of the wire & coil diameters
Load to produce unit deflection
Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties
Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyaniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness
Induction hardening and flame hardening techniques are also used for surface hardening
Martempering of a material is a hardening process
Electrical resistance welding
Die casting
Semi-centrifugal casting
Continuous casting
Entropy
Pressure
Volume
Heat
Air
Oxygen
Liquid medium
Gaseous medium
1
10
30
50
√(Particle diameter)
Particle diameter
(Particle diameter)2
(Particle diameter)3
Oxidising and basic slag
Reducing and basic slag
High activity co-efficient of phosphorous in metal
Oxidising and neutral slag
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
Nichrome
Kanthal
Invar
None of these
Spherical
Nodular
Irregular
No preferred shape
High speed steel
Stainless steel
Tungsten carbide
Superalloys
Engine having carburettor
Diesel engine
Compression ignition engine
Both (B) & (C)
High fusibility & fluidity
High thermal conductivity
Low density
High chemical activity
Stainless steel
Reinforced cement concrete
Cast iron
Asbestos cement
Soluble in solid state
Insoluble in liquid state
Insoluble in both solid & liquid state
Soluble in liquid state
Mild steel
Copper
Cast iron
Wrought iron
87% cementite & 13% Fe
87% ferrite & 13% cementite
93.33% ferrite & 6.67% C
87% ferrite & 13% C
Less than the wet bulb temperature
More than the wet bulb temperature
More than the dry bulb temperature
Equal to wet bulb temperature
7 and 30
10 and 50
2 and 50
13 and 55
H2
CCl4
C2H2
S
Induction motor
Electrostatic precipitator
Fast breeder reactor
Magneto hydrodynamic generator (MHD)
Weight
Number
Volume
Radius
Iron ore & coke
Iron ore, coke & air
Limestone, coke & iron ore
Limestone, sand & iron ore
Heat capacity
Specific heat capacity
Thermal conductivity
Water equivalent
Dryness
Moisture content
Coolness
Latent heat
Lead
Stainless steel
Graphite
Cast iron
Parting
Synthetic
Loam
Dry
Nitrate
Sulphate
Carbonate
Chloride