A. Melts below the melting points of base metals
B. Melts below 300°C
C. Is copper phosphorous alloy
D. Is copper
Related Mcqs:
- Brazing is the joining of metals_____________________?
A. Without melting the base metal
B. With a non-ferrous filler
C. Both A. & B.
D. Neither A. nor (B) - 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 - Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these - ______________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently ?
A. Collar
B. Flanged
C. Bell and Spigot
D. Expansion - Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of _______________ gms of zinc per m2 of steel strip ?
A. 5-10
B. 1000-1500
C. 120-500
D. 1500-3000 - The usual energy consumption in electric arc furnace steel making is _____________ KWh/ton of steel ?
A. 60 – 100
B. 400 – 700
C. 1200 -1500
D. 2000 – 2300 - Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
A. Hot rolled mild
B. Cold rolled mild
C. Forged
D. Machinable stainless - Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?
A. Wrought
B. Tool
C. Alloy
D. Plain carbon - Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?
A. Tensile strength
B. Compressive strength
C. Young’s modulus
D. Thermal co-efficient of expansion - The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?
A. Carbon
B. Manganese
C. Both A nor B
D. Neither A nor B
