A. Carburising
B. Neutral
C. Oxidising
D. All A, B. & C
Related Mcqs:
- While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ?
A. 1800
B. 2000
C. 2400
D. 3000 - Stainless steel is welded with difficulty because of____________________?
A. Its high melting temperature
B. Chances of cracking
C. Oxide film formation
D. Chromium carbide formation - Chromium molybdenum steel cannot be welded using ______________ welding ?
A. Thermit
B. Electrical resistance
C. Oxy-acetylene
D. Any of these - Stainless steel is welded using__________________?
A. Oxy-acetylene flame
B. Oxy-hydrogen flame
C. Arc welding
D. Inert gas arc welding - The maximum thickness of the metal which can be welded using ultrasonic welding is _____________ mm ?
A. 0.5
B. 3
C. 10
D. 25 - 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 - 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
