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Total Questions : 1535 | Page 152 of 154 pages
Question 1511. 6. The process in which Steel is coated with a thin layer of phosphate is known as
  1.    Phosphorising
  2.    Sheradising
  3.    Anodising
  4.    Parkerising
 Discuss Question
Answer: Option D. -> Parkerising
Question 1512. 5. Troostite is the structure obtained by
  1.    Quenching austenite
  2.    Quenching austenite and then heating into the range of 200° to 375°C
  3.    Quenching austenite and then heating into the range of 375°-660°C
  4.    Quenching austenite and then heating into the range of 660°-700°C
 Discuss Question
Answer: Option D. -> Quenching austenite and then heating into the range of 660°-700°C
Question 1513. 7. Eutectoid composition of carbon steel at room temperature is known as
  1.    Pearlite
  2.    Ferrite
  3.    Cementite
  4.    Martensite
 Discuss Question
Answer: Option A. -> Pearlite
Question 1514. 8. Grain size increases as temperature goes above A2 line. Do these grains decrease in size when steel is cooled toward the A3 line
  1.    Yes
  2.    No
  3.    Will decrease if cooled fast
  4.    Will increase if cooled fast
 Discuss Question
Answer: Option B. -> No
Question 1515. 1. When observed unetched, the carbon in gray cast iron appears in the form of
  1.    Graphite
  2.    Cementite
  3.    Ferrite
  4.    Austenite
 Discuss Question
Answer: Option A. -> Graphite
Question 1516. 0. The carbon content of the eutectoid with addition of alloying elements will
  1.    Increase
  2.    Decrease
  3.    Remain unaffected
  4.    Increase or decrease depending on the alloying element
 Discuss Question
Answer: Option B. -> Decrease
Question 1517. 9. The alloying element that could make steel austenite at room temperature are
  1.    Chromium and titanium
  2.    Carbon and sulphur
  3.    Nickel and manganese
  4.    Molybdenum and titanium
 Discuss Question
Answer: Option C. -> Nickel and manganese
Question 1518. 3. Cementite in white cast iron appears as follows under microscope
  1.    Dark
  2.    White
  3.    Light
  4.    Finger print
 Discuss Question
Answer: Option B. -> White
Question 1519. 2. Cementite in the form of lamellar pearlite appears as follows under microscope
  1.    Dark
  2.    White
  3.    Light
  4.    Finger print
 Discuss Question
Answer: Option A. -> Dark
Question 1520. 4. Ferrite appears as follows under microscope
  1.    Dark
  2.    White
  3.    Light
  4.    Finger print
 Discuss Question
Answer: Option C. -> Light

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