1837. Hardened steel is softened by
Normalising
Tempering
Annealing
Carburising
✅ The correct answer is option B.
1839. Which of the following alloys does not contain nickel?
Chlorinet – 2 alloy
Monel
Inconel
Babbit metal
✅ The correct answer is option D.
1841. Austenitic manganese steel used for making jaws of crushing machines contains about __________ percent manganese.
1.5-2
3.5-4.5
7-Sep
Dec-14
✅ The correct answer is option D.
1843. Stainless steel contains
Chromium and nickel
Copper
Aluminium
Vanadium
✅ The correct answer is option A.
1845. Reduction in the grain size reduces the __________ of the material.
Fatigue resistance
Tensile strength
Creep resistance
All of the above
✅ The correct answer is option C.
1847. Cast iron has
Very high tensile strenth
High ductility
High malleability
Elastic limit close to ultimate breaking strength
✅ The correct answer is option D.
1849. Presence of nickel in steel improves its
Corrosion resistance
Cutting ability
Wear resistance
All of the above
✅ The correct answer is option A.
1852. Rotary driers are generally made of
Cast iron
Mild steel
High silicon iron (14% Si)
Tin lined with refractory bricks
✅ The correct answer is option B.
1855. The ability of a material to absorb energy in the elastic range is a measure of its
Toughness
Resilience
Malleability
Brittleness
✅ The correct answer is option B.
1858. Post weld heat treatment is done by
Normalising
Stress relieving
Tempering
Solution annealing
✅ The correct answer is option B.