Metal shots used in shot blasting are made of ______________________?

Related Mcqs:

1. Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium_______________?

   A. Nitrate
   B. Sulphate
   C. Carbonate
   D. Chloride

2. Solidification time of a molten metal in a casting is proportional to (where, V = volume of metal & A = its surface area; in the casting) ?

   A. V/A
   B. V/A2
   C. V2/A
   D. V2/A2

3. In multipass welds, shot peening is done after each pass to__________________?

   A. Close the surface porosity
   B. Break the continuity of columnar grains
   C. Flatten the weldment
   D. Introduce texture in the weld

4. Chlorine acts as a bleaching agent only in the presence of ______________________?

   A. Dry air
   B. Pure oxygen
   C. Moisture
   D. Sunlight

5. To counteract the bad effects of strain hardening on a cold formed part, it must be ______________________?

   A. Tempered
   B. Normalised
   C. Annealed
   D. Hardened

6. Force between the molecules of the same substance is called ______________________ force?

   A. Adhesive
   B. Cohesive
   C. Molecular
   D. Vander Walls

7. The main constituent of bones is ______________________?

   A. CaF2
   B. Ca3(PO4)2
   C. CaCO3
   D. CaCl2

8. Transformer cores are normally made from ______________________?

   A. Soft ferrites
   B. High purity iron
   C. Grain oriented Fe-Si alloy
   D. Al-Ni-Co alloy

9. Water hammer is caused in steam carrying pipelines, because of ______________________?

   A. Partial condensation of steam
   B. Vibration of the pipeline
   C. High degree of superheat of steam
   D. Its exposure to torrential rain

10. Function of fusible plug in a boiler is to ______________________?

    A. Drain out water and sludge from the boiler during repair
    B. Put off fire in the furnace when water level in the boiler falls to unsafe limit
    C. Guard the boiler in case of abnormal rise in steam pressure
    D. All A, B. & C