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WorksheetsFinal Term Quiz 1
Total questions: 45
Worksheet time: 26mins
What is the primary reason for alloying metals?
Increase electrical conductivity
Enhance corrosion resistance
Decrease melting point
Reduce hardness
The alloy commonly used for making aircraft structural components due to its high strength-to-weight ratio is:
Brass
Stainless Steel
Titanium alloy
Pewter
Which alloying element is commonly added to steel to improve its hardness and wear resistance?
Nickel
Chromium
Copper
Aluminum
The process of intentionally introducing controlled amounts of carbon into iron to produce steel is known as:
Alloying
Quenching
Tempering
Carbonization
The alloy known for its excellent corrosion resistance and often used in chemical processing equipment is:
Inconel
Monel
Hastelloy
Duplex steel
Which type of stainless steel is non-magnetic and commonly used in applications where corrosion resistance is essential?
Martensitic
Ferritic
Austenitic
Duplex
The alloy commonly used for making electrical wires due to its high electrical conductivity is:
Brass
Bronze
Copper
Aluminum
Which alloy is a combination of copper and tin and is often used for making musical instruments?
Brass
Bronze
Pewter
Monel
The alloy known for its high strength, corrosion resistance, and use in marine applications is:
Inconel
Monel
Duplex steel
Aluminum alloy
The process of heating an alloy to a specific temperature and then cooling it slowly to improve its mechanical properties is known as:
Quenching
Annealing
Tempering
Nitriding
Which metal joining process involves the melting and fusing of metals by electric resistance heating?
Welding
Brazing
Soldering
Soldering
In which application is the alloy Ti-6Al-4V commonly used?
Aircraft components
Plumbing pipes
Automotive body panels
Electronics packaging
Ceramics are often used in high-temperature applications due to their:
Low thermal conductivity
High electrical conductivity
High ductility
Low melting point
The process of shaping ceramic materials by pressing them into a mold is known as:
Sintering
Extrusion
Casting
Forming
Silicon carbide (SiC) is commonly used in:
Electrical insulation
Cutting tools
Transparent windows
Dental implants
The primary application of alumina (Al2O3) in ceramics is in the production of:
Insulators
Refractories
Bioceramics
Semiconductor devices
What is the primary advantage of using ceramics in biomedical applications such as hip implants?
High thermal conductivity
Low hardness
Biocompatibility
High ductility
The process of heating ceramics to a high temperature but below the melting point to improve strength and hardness is called:
Sintering
Vitrification
Devitrification
Calcination
Zirconia (ZrO2) is commonly used in:
Cutting tools
Dental crowns
Insulators
Transparent glass
Materials made by man using both organic and inorganic substances.
Synthetic materials
Natural materials
Optical materials
Biomedical materials
A combination of at least two materials, one of which is a metal whose properties are different from its original form.
Metalloid
Ceramic
Alloy
Nanomaterial
Large molecules made by boding a series of building blocks.
Nanomolecules
Polymers
Composites
Ceramics
what is reinforcement
fibers or particles that give the composites strength,stiffness and density
a composite with different sets of properties than its constituent materials
decrease in cracking by distributing stress evenly
fillers added to save money or modify properties
What is the definition of a composite?
Composites are when you weld two or more metals together to form a new type of metal.
Composites are a combination of two or more materials that are bonded together to improve their mechanical or physical properties.
Composites are when you take 2 or more metals and fuse them through melting.
Composites are when you take 2 or more matrix and mix them to create a new material.
-------------- method is applicable mainly to the thermoplastic resins.
Compression moulding
Injection moulding
Blow moulding
Extrusion moulding
------- moulding is used to fabricate hollow bottles.
Injection
Compression
Blow
Extrusion
--------------------- materials are used in compression moulding
Thermosetting
Thermoplastic
Commodity
High polymers
The addition of --------------- to the natural rubber with heating is called vulcanization.
sodium
potassium
aluminium
sulphur
Consists of particles of one material dispersed in a matrix of a second material
particle-reinforced composites
fiber-reinforced composites
structural composites
nanocomposites
These composites are extensively used as cutting tools for hardened steels.
Polymers with Filler
Cermets
Concrete
Which one of this is Not True about the Shrinkage factors?
Molding temperature
Compaction time
Injection pressure
Eliminates solidification of sprue and runner by locating heaters around the corresponding runner channels
Fillers in the plastic tend to reduce shrinkage
Which one of this is Not True about Compression Molding?
A widely used molding process for thermosetting plastics
used for rubber tires and polymer matrix composite parts
Molding compound available in several forms: powders or pellets, liquid, or preform
Amount of charge must be precisely controlled to obtain repeatable consistency in the molded product
None of the above
Which one of this is Not True about Transfer Molding?
Air pressure is used to inflate soft plastic into a mold cavity
TS charge is loaded into a chamber immediately ahead of mold cavity, where it is heated
Pot transfer molding - charge is injected from a "pot" through a vertical sprue channel into cavity
Plunger transfer molding – plunger injects charge from a heated well through channels into cavity
Capable of molding more intricate part shapes than compression molding
the sequence in ceramic processing
raw materials,drying,forming,firing,finishing
raw materials,firing,drying,forming,finishing
raw materials,forming,firing,drying,finishing
raw materials,forming,drying,firing,finishing
state type of process shown in the figure
HIP
CIP
jiggering
slip casting
These are the characteristic of ceramics material EXCEPT
Tend to be brittle.
Poor electric conductor.
Good heat and wear resistance.
Flexible.
Choose all classification of ceramic materials.
Oxides
Carbides
Nitrides
Amorphous
