A. Close the surface porosity
B. Break the continuity of columnar grains
C. Flatten the weldment
D. Introduce texture in the weld
Related Mcqs:
- Use of flux during soldering is done to__________________?
A. Increase fluidity of solder by lowering its melting temperature
B. Prevent oxide formation
C. Wash away surplus solder
D. Full up the joint gap - Metal shots used in shot blasting are made of ______________________?
A. Stellite
B. Steel
C. Bronze
D. Lead - Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?
A. (r2 – r1)/r1. r2
B. r1. r2/(r2 – r1)
C. (r2 + r1)/r1. r2
D. r1. r2/(r2 + r1) - Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of ________________?
A. Paper
B. Cloth
C. Lead
D. Aluminium - Case hardening is not done by________________?
A. Nitriding
B. Hot dipping
C. Electroplating
D. Both ‘B’ & ‘C’ - Work done by a/an _________________ process is determined by ∫p. dv ?
A. Adiabatic
B. Quasi-static
C. Isothermal
D. Isentropic - Elimination of brittleness resulting from welding of saw blades is done by __________________ of the welded portion ?
A. Annealing
B. Toughening
C. Work hardening
D. Tempering - Hot extrusion of aluminium is done in the temperature range of ________________ °C ?
A. 550-600
B. 450-500
C. 350-400
D. 250-300 - Limestone addition in the blast furnace is done to flux _______________ present in the raw materials?
A. SiO2
B. Al2O3
C. MnO2
D. P - Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium_______________?
A. Nitrate
B. Sulphate
C. Carbonate
D. Chloride
