Coarse grained steels have____________________?

Related Mcqs:

1. Fine grained steels have____________________?

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

2. Steels with high carbon equivalent have poor Weldability, because in these steels during welding________________?

   A. Carbon and other alloying elements get oxidised from the weld pool
   B. Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
   C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
   D. Segregation of carbon and other element occurs in the weld pool leading to poor properties of
   the weld

3. 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

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

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

5. 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

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. Plastics as a material of construction suffer from the drawback of low_________________?

   A. Machinability
   B. Density
   C. Strength
   D. Plastic deformation

9. Matte smelting is used in the extraction of_____________________?

   A. Lead
   B. Zinc
   C. Aluminium
   D. Copper

10. Heating of ferromagnetic materials to a temperature above Curie temperature makes it ________________________?

    A. Insulator for heat & electricity transmission
    B. Ferritic
    C. Behave like paramagnetic materials
    D. Superconductor