Case hardening is not done by________________?
Case hardening is not done by________________? A. Nitriding B. Hot dipg C. ElectroplatingD. Both ‘B’ & ‘C’
Case hardening is not done by________________? A. Nitriding B. Hot dipg C. ElectroplatingD. Both ‘B’ & ‘C’
Oxide layer formed on the non-ferrous metal surface after its annealing is__________________? A. Removed by acid pickling B. Hammered into the surface C. Removed with coarse emery cloth D. Left as such to protect the surface
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ? A. Lead B. Copper C. Aluminium D. Wrought iron
Which of the following is not used as a bearing material ? A. Copper-lead alloys B. Babbitts C. BronzesD. Cermets
Pick out the correct combination about the role of various additives used in polymers ? A. Plasticiser: increases the polymer strength B. Heat stabiliser: increases the maximum service temperatureC. Fillers: Does not affect the property of polymer but increases its…
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
Shampoos are commercially not available in the form of ___________________? A. PowderB. Gaseous mixture C. Solution D. Emulsion
Which of the following is an ore dressing operation ? A. Classification B. Smelting C. Roasting D. None of these