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Total Questions : 1535 | Page 149 of 154 pages
Question 1481. 8. Which of the following is not the objective of annealing
  1.    Remove internal stresses
  2.    Refine grain size
  3.    Refine structure
  4.    Improve machinability
 Discuss Question
Answer: Option D. -> Improve machinability
Question 1482. 7. A small selected portion of the job can be hardened by
  1.    Flame and induction hardening
  2.    Pack hardening
  3.    Cyaniding
  4.    Nitriding
 Discuss Question
Answer: Option A. -> Flame and induction hardening
Question 1483. 4. Which of the following element in steel directly affects the critical temperature of the steel to be heat-treated
  1.    Sulphur
  2.    Phosphorus
  3.    Carbon
  4.    Chromium
 Discuss Question
Answer: Option C. -> Carbon
Question 1484. 6. Overheating high alloy steels when pack hardening must be avoided to prevent
  1.    Low hardness and shrinkage
  2.    Extreme hardness and brittleness
  3.    Distortion
  4.    Scale formation
 Discuss Question
Answer: Option C. -> Distortion
Question 1485. 9. Which of the following is a case hardening process
  1.    Spherodising
  2.    Tempering
  3.    Sheradising
  4.    Cyaniding
 Discuss Question
Answer: Option D. -> Cyaniding
Question 1486. 0. Which of the following is not the objective of nitriding
  1.    Increase surface hardness
  2.    Increase fatigue limit
  3.    Increase wear resistance
  4.    Refine grain size
 Discuss Question
Answer: Option D. -> Refine grain size
Question 1487. 6. Magnet steel contains high percentage of
  1.    Nickel
  2.    Tungsten
  3.    Cobalt
  4.    Copper
 Discuss Question
Answer: Option B. -> Tungsten
Question 1488. 4. Martensite is the structure obtained by
  1.    Quenching austenite
  2.    Quenching austenite and then heating in the range of 200° to 375°C
  3.    Quenching austenite and then heating in the range of 375° to 660°C
  4.    Quenching austenite and then heating in the range of 600° to 700°C
 Discuss Question
Answer: Option C. -> Quenching austenite and then heating in the range of 375° to 660°C
Question 1489. 5. The rollers of a cycle chain are subjected to following type of stress
  1.    Compressive
  2.    Tensile
  3.    Bending
  4.    Fatigue
 Discuss Question
Answer: Option D. -> Fatigue
Question 1490. 3. Martensite is the supersaturated solution of carbon in
  1.    Iron
  2.    Steel
  3.    Alpha-iron
  4.    Beta-iron
 Discuss Question
Answer: Option A. -> Iron

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