Related Mcqs:

1. Which of the following has the least value of ultimate tensile strength (UTS) ?

   A. Medium carbon steel
   B. High carbon steel
   C. Cast iron
   D. Wrought iron

2. Ultimate strength in tension as compared to that in shear for steel is____________________?

   A. Half
   B. One third
   C. One and half times
   D. One fourth

3. Maximum change in the hardness of martensite occurs in the carbon content range of _____________ percent in steel?

   A. 0.01 to 0.10
   B. 0.2 to 0.4
   C. 0.5 to 0.7
   D. 0.8 to 1.0

4. Cold cracking in the heat affected zone of a high strength steel weld can take place because of the___________________?

   A. Retained austenite
   B. Martensite formation
   C. Relatively high sulphur content in the base metal
   D. Sufficient hydrogen present in the welding arc

5. A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?

   A. 0
   B. 0.33
   C. 0.44
   D. 0.25

6. 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

7. The minimum carbon content in steel should be ____________________ percent for it to respond to a hardening treatment ?

   A. 0.2
   B. 0.4
   C. 0.6
   D. 0.8

8. Suitability of steel for its use in cable is judged by its strength in__________________?

   A. Tension
   B. Compression
   C. Torsion
   D. Shear

9. Which of the following is the most suitable abrasive for grinding high tensile strength materials ?

   A. Silicon carbide
   B. Corundum
   C. Aluminium oxide
   D. Boron carbide

10. Increasing the carbon content of steel_________________?

    A. Reduces the upper shelf energy
    B. Increasing the ductility transition temperature
    C. Decreases brittleness
    D. Decreases hardness