Practice Test: Question Set - 34
1. __________ test is the appropriate test to determine whether a material is ductile or brittle.
- (A) Impact
- (B) Cupping
- (C) Hardness
- (D) Tensile
2. Primary designation of steel is based on its
- (A) Hardness & tensile strength
- (B) Carbon content
- (C) Iron content
- (D) Alloying elements content
3. The two elements required to form substitutional solid solution should not have
- (A) Same crystalline structure
- (B) Same valency
- (C) Widely differing electronegativity
- (D) Same atomic sizes
4. Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
- (A) Creep
- (B) Fatigue
- (C) Endurance
- (D) Tensile
5. The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the
- (A) Critical point
- (B) Curie temperature
- (C) Inversion temperature
- (D) Eutectic temperature
6. With increase in impurities in metals, their corrosion resistances
- (A) Increase
- (B) Decrease
- (C) Remain same
- (D) May increase or decrease; depending on the type of metal
7. Density in the solid state is slightly less than that in its liquid state, in case of
- (A) Carbon dioxide
- (B) Water
- (C) Mercury
- (D) None of these
8. __________ iron is produced by the annealing of white cast iron.
- (A) Malleable
- (B) Nodular
- (C) Ductile
- (D) Grey
9. Starting friction is low in case of the __________ lubrication.
- (A) Boundary
- (B) Hydrodynamic
- (C) Hydrostatic
- (D) Mixed/semi-fluid
10. While the bin cards are used in the effective stores management, the queuing theory is associated with the __________ time.
- (A) Waiting
- (B) Idle
- (C) Inspection
- (D) Tool replacement
11. Large scale fire on fuel gas line is normally extinguished by
- (A) Water
- (B) Steam
- (C) Foam
- (D) Nitrogen
12. Most of the phosphorous present in the blast furnace burden enters into
- (A) Hot metal
- (B) Flue gases
- (C) Slag
- (D) Refractory lining
13. Which of the following metals is not subjected to electrolytic refining/purification?
- (A) Copper
- (B) Zinc
- (C) Tin
- (D) Aluminium
14. Baffles provided on the shell side of a shell and tube heat exchanger are meant for
- (A) Providing support for the tubes
- (B) Improving heat transfer
- (C) Both 'a' & 'b'
- (D) Preventing the fouling of tubes & stagnation of shell side fluid
15. Pick out the correct statement.
- (A) Hot worked materials are subjected to annealing to remove internal
stresses
- (B) Annealing of steel hardens it slightly
- (C) Normalizing of a material induces stresses
- (D) Tempering of a material improves ductility & toughness but
reduces hardness & brittleness
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