Low toughness
No tendency to distort
High density
Very high toughness
B. No tendency to distort
Copper
Zinc
Tin
Aluminium
Tempering
Annealing
Normalising
Carburising
Induce stresses in it
Refine its grain structure
Reduce segregation
Improve its mechanical properties
1 stoke = 1 cm2/sec
1 N.sec/m2 = 10 paise
1 stoke = 1 m2/sec
1 m2/sec = 104 stokes
Pressure
Temperature
Volume
None of these
More
Less
Equal
Much more
Reduces the upper shelf energy
Increasing the ductility transition temperature
Decreases brittleness
Decreases hardness
Inventory control
Production schedule
Sales forecasting
Quality control
0.5
1
1/3
2.5
Tensile strength
Compressive strength
Young's modulus
Thermal co-efficient of expansion
Positively charged
Negatively charged
Neutral
Of higher wavelength than visible light
Pressure change to temperature change occuring during adiabatic compression of a gas
Pressure change to temperature change occuring during adiabatic throttling of a gas
Temperature change to pressure change occuring during adiabatic compression of a gas
Temperature change to pressure change occuring during adiabatic throttling of a gas
Surface roughness
Pores
Spherical inclusion
Crack
Carburising
Nitriding
Cyaniding
Annealing
Cavitation
Frictional losses
Kinetic energy loss
Static head
Thoria
Glass
Ice
Pig iron
80-85
60-65
40-45
20-25
Mach
Reynolds
Froude
Weber
Dry air
Pure oxygen
Moisture
Sunlight
Non-crystalline organic polymeric
Ceramic
All crystalline
All amorphous
(r2 - r1)/r1. r2
r1. r2/(r2 - r1)
(r2 + r1)/r1. r2
r1. r2/(r2 + r1)
Boundary
Hydrodynamic
Hydrostatic
Mixed/semi-fluid
746
3000
1000
550
14 : 1
22 : 1
25 : 1
4 : 1
0.5
3
10
25
Borosilicate glass
Silica glass
Soda lime glass
None of these
Convection heat transfer by stirring the fluid and cleaning the heating surface
Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity
Radiation heat transfer by increasing the temperature and reducing the emissivity
None of these
lbm/lbf. ft/sec2
lbf/lbm. ft/sec2
ft/sec2
lbm/lbf. sec2/ft
High heat capacity
Low heat capacity
High thermal conductivity
Both (B) and (C)
Pressure falls below the vapour pressure
Pressure becomes very high
Temperature becomes low
All 'a', 'b' & 'c'