MCQs
Total Questions : 350
| Page 35 of 35 pages
Answer: Option A. -> Face centered cubic lattice
A face-centered cubic crystal structure will exhibit more ductility (deform more readily under load before breaking) than a body-centered cubic structure.
The bcc lattice, although cubic, is not closely packed and forms strong metals. Alpha-iron and tungsten have the bcc form.
A face-centered cubic crystal structure will exhibit more ductility (deform more readily under load before breaking) than a body-centered cubic structure.
The bcc lattice, although cubic, is not closely packed and forms strong metals. Alpha-iron and tungsten have the bcc form.
Answer: Option A. -> Hard
Presence of sulfur tends to make iron hard and produces unsound castings. Wrought iron and steel produced from iron containing sulfur makes wrought iron and steel to be brittle when heated.
Presence of sulfur tends to make iron hard and produces unsound castings. Wrought iron and steel produced from iron containing sulfur makes wrought iron and steel to be brittle when heated.
Answer: Option B. -> Brass
Unlike steel alloys, brass cannot be hardened by heating.
Brass can only be strain or work-hardened.
The hardening occurs when the material is worked mechanically, e.g. by cold working.
The action of force does not harden brass
Unlike steel alloys, brass cannot be hardened by heating.
Brass can only be strain or work-hardened.
The hardening occurs when the material is worked mechanically, e.g. by cold working.
The action of force does not harden brass
Answer: Option A. -> Same
Nimonic is nickel-based high-temperature low creep superalloys. Nimonic alloys typically consist of more than 50% nickel and 20% chromium with additives such as titanium and aluminium.
Nimonic is nickel-based high-temperature low creep superalloys. Nimonic alloys typically consist of more than 50% nickel and 20% chromium with additives such as titanium and aluminium.
Answer: Option C. -> Machinability
Sulfur is normally regarded as an impurity and has an adverse effect on impact properties when a steel is high in sulphur and low in manganese.
Sulphur improves machinability but lowers transverse ductility and notched impact toughness and has little effects on the longitudinal mechanical properties.
Sulfur is normally regarded as an impurity and has an adverse effect on impact properties when a steel is high in sulphur and low in manganese.
Sulphur improves machinability but lowers transverse ductility and notched impact toughness and has little effects on the longitudinal mechanical properties.
Answer: Option B. -> Increase
The ultimate tensile strength of low carbon steel by working at a high strain rate will Increase
The ultimate tensile strength of low carbon steel by working at a high strain rate will Increase
Answer: Option A. -> Amount of carbon it contains
Depending on the temperature and composition of the steel, it can be hardened or softened.
To make steel harder, it must be heated to very high temperatures.
The final result of exactly how hard the steel becomes depends on the amount of carbon present in the metal.
Depending on the temperature and composition of the steel, it can be hardened or softened.
To make steel harder, it must be heated to very high temperatures.
The final result of exactly how hard the steel becomes depends on the amount of carbon present in the metal.
Answer: Option D. -> All of the above
Normalising of steel is done to Refine the grain structure and Remove strains caused by cold working and Remove dislocations caused in the internal structure due to hot working
Normalising of steel is done to Refine the grain structure and Remove strains caused by cold working and Remove dislocations caused in the internal structure due to hot working
Answer: Option B. -> Twelve
The face-centered cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell.
The body-centered cubic (bcc) has a coordination number of 8 and contains 2 atoms per unit cell.
The simple cubic has a coordination number of 6 and contains 1 atom per unit cell
The face-centered cubic (fcc) has a coordination number of 12 and contains 4 atoms per unit cell.
The body-centered cubic (bcc) has a coordination number of 8 and contains 2 atoms per unit cell.
The simple cubic has a coordination number of 6 and contains 1 atom per unit cell
Answer: Option A. -> Silver, copper, zinc
silver solder is composition of Silver, copper, zinc
silver solder is composition of Silver, copper, zinc
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