A. 0.01 to 0.10
B. 0.2 to 0.4
C. 0.5 to 0.7
D. 0.8 to 1.0
Related Mcqs:
- Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?
A. Small punches, broaches reamers and springs
B. Cutlery, screws, rivets and files
C. Mandrels, twist drills, small lathe tools and razors
D. Forgings like can shaft, structural steel plate, threading dies and drawing dies - The minimum carbon content in steel should be ____________________ percent for it to respond to a hardening treatment ?
A. 0.2
B. 0.4
C. 0.6
D. 0.8 - Maximum permissible sulphur content in steel is ______________ percent ?
A. 0.015
B. 0.055
C. 0.505
D. 0.805 - 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 - With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and _____________ is not affected ?
A. Impact strength
B. Percent elongation
C. Hardness
D. Both B & C - Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of _______________ hardness?
A. Scratch
B. Indentation
C. Dynamic
D. Rebound - Maximum heat dissipation occurs from a steel wire (k = 0.5 W/m. k) of 15 mm diameter exposed to air (h = 20W/m2 .k), when the insulation thickness is ________________ mm?
A. 15
B. 25
C. 10
D. 30 - Addition of _____________________ to steel does not impart hardness?
A. Nickel
B. Copper
C. Chromium
D. Silicon - All of the following alloying elements of steel increases hardness but sacrifice ductility, except________________?
A. Nickel
B. Vanadium
C. Molybdenum
D. Chromium - The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
A. Red
B. Extended
C. Super
D. Extreme
