Related Mcqs:

1. Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

   A. Small punches, broaches reamers and springs
   B. Cutlery, screws, rivets and files
   C. Mandrels, twist drills, small lathe tools and razors
   D. Forgings like can shaft, structural steel plate, threading dies and drawing dies

2. Hydrogen in liquid steels is dissolved_________________?

   A. As tiny gas bubbles
   B. In the atomic form
   C. In the ionic form
   D. In the molecular form

3. Machinability of hard alloys and tool steels is improved by_____________________?

   A. Spheroidising
   B. Annealing
   C. Tempering
   D. Normalising

4. Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?

   A. Tempering
   B. Hardening
   C. Annealing
   D. Normalising

5. Fine grained steels have____________________?

   A. High brittleness
   B. Higher tendency to distort
   C. High ductility
   D. None of these

6. Most important property of steels for use in automobile bodies is the___________________?

   A. Formability
   B. Yield strength
   C. Toughness
   D. Resilience

7. Earing is a defect found in steels after the following metal working operation ?

   A. Extrusion
   B. Rolling
   C. Deep drawing
   D. Wire drawing

8. Coarse grained steels have____________________?

   A. Low toughness
   B. No tendency to distort
   C. High density
   D. Very high toughness

9. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to____________________?

   A. Time
   B. Square root of time
   C. Square of time
   D. Cube of time

10. _______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?

    A. Beryllium
    B. Zirconia
    C. Alumina
    D. Magnesia