In the world of engineering, the most commonly used materials are plastics and metals. If you are on the journey of becoming an engineer, you are expected to be conversant with the materials and tools you will use or come across. How about you test your memory and understanding by taking the challenging quiz below. All the best as you tackle it!
Excellent strength at high temperature
Excellent hardness at high temperature
Excellent weldability at high temperature
Maintain their mechanical properties at very high temperatures
Lose their mechanical properties at very high temperatures
Maintain their mechanical properties at very low temperatures
Automatically by a programmed controller
By installing the repair in a vacuum bag
Manually by an operator
Catalyst first before mixing it into the resin
Resin before adding the catalyst
Resin after the catalyst has been mixed into it
Has little or no effect on a metal's heat treated characteristics
Has a cumulative enhancement effect on the original heat treatment
Can significantly alter a metal's properties in the reheated
Ends of the fibres "fuzz" the edges of the hole
Hole tends to be oversized
Drill quickly overheats and blunts
Probability theories
Energy levels
Shell strengths
To chemically clean the base metal of oxide film
To prevent overheating of the base metal
To increase heat conductivity
Contained in heat treatment tables issued by the standards authority.
Contained in the material specification sheet
Marked on the material as a temper code
Decreased weldability
Increase machinability
Increased tensile strength
Delamination of the surface layers.
Crevices forming around the fasteners
"worm-like" tracks under the paint
Cold working
Aging
Heat treatment
Automatically by a programmed controller
By installing the repair in a vacuum bag
Manually by an operator
Polymers
Multimers
Isomers
Has an extremely low coefficient of expansion.
Has very high permeability.
Self-hardens under mechanical pressure
Magnetite.
Hermatite.
Taconite.
Slow breakdown of plastic material subjected to repeated normal loads over extended period
Slow stretching of a plastic material subjected to a tensile load over time
Rapid breakdown of a plastic material subjected to repeated normal loads over extended period
Difficulty in fusion
Inclusion in joints
Increase in ductility
0.8%
0.6%
0.2%
Defects just below the surface are indicated
It shows whether visible lines and other marks are actually cracks rather than scratches
It indicates overspeed condition
Bessemer converter
Electric arc furnace
Oxygen lance converter
3
6
9
Phosphorus
Tin
Zinc
Ionic bond
Lattice bond
Van der Waals forces
Antiskin
Extender
Catalyst
Cycle diagram
Alloy absorption diagram
Phase diagram
Ionic bonding
Covalent bonding
Metallic bonding
Smelting
Flotation
Electroplating
Styrene based
Peroxide based
Epoxy based
Rapidly by quenching in cold water.
In air or by quenching
At a slow controlled rate.
Crevice corrosion
Filiform corrosion
Exfoliation corrosion
Zinc
2024 aluminum alloy
Stainless steel
Copper for machinability
Carbon for weldability
Silicon for casting
Aluminum alloy surface layers and a pure aluminum core
Pure aluminum surface layers on an aluminum alloy core
A homogenous mixture of pure aluminum and aluminum alloy
Dissolving in ferrite and creating a fine grain structure
Distorting the grain structure
Reacting with carbon and forming carbide
Residual
Inductance
Continuous
Inter-granular corrosion in the tank floor
Exfoliation corrosion on the tank floor.
Shielding corrosion on the tank floor
Quiz Review Timeline (Updated): Mar 21, 2022 +
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