Zirconia
Alumina
Bakelite
Tungsten carbide
D. Tungsten carbide
Followed by tempering or carburising
Preceded by its tempering
Done to get a soft ductile interior with a very hard surface
Carried out to get extreme hardness in its core
Isobaric
Polytropic
Isentropic
None of these
Low temperature of
High temperature of
High % of CO in
High % of CO2 in
Occurs higher in the electro-chemical series of metals
Is exemplified by magnesium plate
Is much cheaper than the cathodic base material to be guarded against corrosion
All (A), (B) & (C)
Cotton, silk and paper
Asbestos, glass, porcelain and mica
Rubber and polymeric resins
All refractory materials
1 kgf/m2
10 kgf/m2
10 kgf/mm2
1 kgf/mm2
Is an electrical insulating material
Of low resistivity is preferred
Should have high thermal conductivity
Need not defy the corrosive action of chemicals
Iron and steel
Cement
Glass
Fertiliser
Venting off (after burning) the excess inflammable/toxic gases at high pressure
Absorbing the pollutant gases from the furnace exhaust
Cooling of furnace exhaust gases
None of these
Black
Silver grey
Green
Yellow
Boron carbide
Tungsten carbide
Hardened steel
Silicon carbide
Mild steel
Concrete
Cast iron
Asbestos cement
Shock loading
Vibration
Fatigue
Tension
Mass
Volume
Surface area
All 'a', 'b' & 'c'
Speed of the extruded material is same as that of ram speed
Redundant work is a function of the die angle
Relative motion between the billet surface and the container wall is always present
Hollow ram is used for indirect extrusion
Weight
Number
Volume
Radius
Iron
Copper
Rubber
Nickel
0
∞
1
0.5
Used in I.C. engines as fuel
Liquefied & stored under cryogenic conditions
Produced by electrolysis of water
All (A), (B) & (C)
Blow down valve
Blow off cock
Fusible plug
Safety valve
Air
Water
Mercury
Alcohol
Critical
Breeder
Fertile
Heterogeneous
Entropy
Pressure
Volume
Heat
Nuclear fission
Nuclear fusion
Both the nuclear fission & fusion
Ionisation
Determination of elastic constant
Detection of defects in metal
Measurement of material thickness
None of the above
20
200
500
2000
370
340
320
300
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
Mild steel
Copper
Soft iron
Stainless steel
Wet bulb temperature=dry bulb temperature
Wet bulb temperature=dew point temperature
Saturation temperature=dew point temperature
All 'a', 'b' & 'c'