Material Science Set 13

Electrical Engineering

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This set of Material Science Multiple Choice Questions & Answers (MCQs) focuses on Material Science Set 13

Q1 | In FCC, the lattice parameter (a) is
  • (4/√3) r
  • 4/√3 r
  • (4/√2) r
  • 4/√2 r
Answer: (4/√2) r
Q2 | In geometrical hardening, at the beginning λ is
  • less than 45°
  • more than 35°
  • more than 45°
  • less than 35°
Answer: less than 45°
Q3 | In geometrical softening, at the beginning λ is
  • less than 45°
  • more than 35°
  • more than 45°
  • less than 35°
Answer: more than 35°
Q4 | In hot working force required isthan cold working
  • greater
  • less
  • equal
  • can’t say
Answer: less
Q5 | In hot working microstructure is
  • distorted
  • equiaxed
  • refined
  • both b & c
Answer: both b & c
Q6 | In vacancy point defects, stress field produced in the vicinity.
  • tension
  • shear
  • compression
  • all
Answer: tension
Q7 | Indexing or designation in a unit cell can be done for a particular               
  • point location
  • direction
  • plane
  • all of the above
Answer: all of the above
Q8 | Inter atomic distance is more                    the dislocation line in negative edge dislocation
  • above
  • below
  • right side of
  • left side of
Answer: above
Q9 | Inter atomic distance is more                    the dislocation line in positive edge dislocation
  • above
  • below
  • right side of
  • left side of
Answer: below
Q10 | It is a type of Twin
  • annealing
  • tempering
  • normalising
  • hardening
Answer: annealing
Q11 | Lattice constant represents                   
  • distance between adjacent atoms of unit cell
  • distance between adjacent unit cell
  • angle between edges of unit cell
  • geometry of crystal structure
Answer: distance between adjacent atoms of unit cell
Q12 | Lattice structure represents arrangement of unit cells in                   
  • 2-dimensional axes system
  • 3-dimensional axes system
  • orthographi c system
  • none of the above
Answer: 3-dimensional axes system
Q13 | Ligancy number for HCP is
  • 6
  • 12
  • 4
  • 8
Answer: 12
Q14 | Material having cohesive strength shows large plastic deformation
  • high
  • low
  • constant
  • none of the above
Answer: high
Q15 | Material having CRSS shows large plastic deformation
  • high
  • low
  • constant
  • none of the above
Answer: low
Q16 | Miller indices of the line of intersection of(⎯ 1⎯ 11) and (110) are
  • [110]
  • [101]
  • [10-1]
  • [-110]
Answer: [-110]
Q17 | Minimum number of slip systems that must be operative during plastic deformation
  • 3
  • 4
  • 5
  • 6
Answer: 5
Q18 | Most polymers are type of materials
  • non- crystalline
  • crystalline
  • both a & b
  • none of the above
Answer: non- crystalline
Q19 | Negative screw dislocation is represented by
  • ┴
  • 0
  • ┬
Answer: ┬
Q20 | No. of atoms in Body-Centered Cubic structure are …..
  • 1
  • 2
  • 4
  • 6
Answer: 2
Q21 | No. of atoms in hexagon close packed structure are …..
  • 1
  • 2
  • 4
  • 6
Answer: 6
Q22 | No.of atoms in FCCstructure are …..
  • 2
  • 1
  • 4
  • 5
Answer: 4
Q23 | Oxidation of metals occurs during cold working.
  • true
  • false
Answer: false
Q24 | Plastic deformation results from the following.
  • edge dislocation
  • screw dislocations
  • mixed dislocations
  • all of the above
Answer: all of the above
Q25 | Poor surface finish in………process
  • cold working
  • hot working
  • casting
  • welding
Answer: hot working
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