Plastic deformation of material does not occur
Initiation of crack from below the surface does not occur
Initiation of crack occurs on the surface of the machine part
Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface
B. Initiation of crack from below the surface does not occur
Ductile material
Hard materials
Brittle materials
Finishing cuts
Phosphate coating is used as an excellent base for paints & enamels
Phosphate coating is less corrosion resistant than chromate coating
The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode
Calorising is the process of coating steel with chromium
10-3
103
10-15
1015
9.5 : 1
12.5 : 1
15.5 : 1
18.5 : 1
Mild steel
Copper
Cast iron
Wrought iron
Cavitation
Frictional losses
Kinetic energy loss
Static head
Lead can creep under its own weight at room temperature
The electrical conductivity of gold is considerably reduced by alloying additions due to the decrease in electron movement
Recrystallisation temperature decreases with decrease in strain in a cold worked metal
With increase in temperature, the electrical conductivity of intrinsic semi-conductor will increase
Hot rolled mild
Cold rolled mild
Forged
Machinable stainless
Viscous force is larger than the inertia force
Inertia force is larger than the viscous force
Inertia force is larger than the surface tension force
Inertia force is larger than the gravitational force
Annealing
Toughening
Work hardening
Tempering
Blades of gas turbine
Piston of an I. C. engine
Flywheel of steam engine
Cycle chain
Radio-isotopes
Pouring soap solution on the surface and locating the gas bubbles
Halide torch
Pungent smell of mercaptans present in the gas
150
200
300
400
0.7-1.0
1.1-1.4
1.5 - 1.8
2.0 - 2.5
Stainless steel
Mild steel
High speed steel
High carbon steel
Cobalt
Hafnium
Cadmium
Boron
10
20
30
40
Alumina
Platinum
Vanadium pentoxide
Iron oxide
Fatigue resistance
Tensile strength
Creep resistance
All (A), (B) & (C)
0
1
1/2
1/3
Steel plant
Textile factory
Petroleum refinery
Coke oven battery
Two
Four
Six
Eight
Reduce the speed
Obtain variable speed
Increase the speed
Produce high torque
Uranium - 233 : Fertile material
Binding energy : Mass defect
Scattering: Absorption cross-section
Number of nucleons : Mass number
Grashoff number
Grashoff number & Reynolds number
Reynolds number
Grashoff number & Prandtl number
Packed column
Venturi scrubber
Bubble cap plate column
Wetted wall column
Decrease in dislocation density
Increase in solutionising temperature
Increase in strength
Decrease in grain size
Helium
Oxygen
Carbon dioxide
None of these
Complete unity of command exists in a line organisation
Line organisation is net suitable for expansion and growth of an industry
In line and staff organisation, line executes and staff directs
None of these
Suspended salt
Dissolved salt
Silica
Turbidity