Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Last Answer : (B) Tempering
Last Answer : (A) Normalising
Description : __________ of hard alloy and tool steel is done to make it easily machinable. (A) Case carburising (B) Tempering (C) Normalising (D) Annealing
Description : Which of the following heat treatment processes is usually applied to castings? (A) Tempering (B) Annealing (C) Normalising (D) Carburising
Last Answer : (D) Carburising
Description : Which of the following heat treatment processes is used for softening the hardened material? (A) Normalising (B) Tempering (C) Annealing (D) None of these
Description : Pick out the wrong statement. (A) Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties (B) Low carbon steel does not respond to ... are also used for surface hardening (D) Martempering of a material is a hardening process
Last Answer : Option C
Description : The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing
Last Answer : (D) Solution annealing
Description : The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these
Last Answer : (B) Normalising
Description : . To improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing
Last Answer : (A) Spheroidising
Description : Pick out the correct statement. (A) Hot worked materials are subjected to annealing to remove internal stresses (B) Annealing of steel hardens it slightly (C) Normalising of a material induces stresses (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness
Last Answer : (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness Share
Description : o improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing
Last Answer : Option A
Description : Post weld heat treatment is done by (A) Normalising (B) Stress relieving (C) Tempering (D) Solution annealing
Last Answer : (B) Stress relieving
Description : Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening
Last Answer : (B) Annealing
Description : Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising
Description : Machinability of hard alloys and tool steels is improved by (A) Spheroidising (B) Annealing (C) Tempering (D) Normalising
Last Answer : Option B
Description : Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part? (A) Anodising (B) Tempering (C) Carburising
Description : Cold worked steel parts are normally subjected to (A) Normalising (B) Hardening (C) Annealing (D) Shot peening
Last Answer : (C) Annealing
Description : Nitriding of steel is a process for (A) Case hardening (B) Spheroidising (C) Normalising (D) Annealing
Last Answer : (A) Case hardening
Description : Case hardening of a material is (A) Followed by tempering or carburising (B) Preceded by its tempering (C) Done to get a soft ductile interior with a very hard surface (D) Carried out to get extreme hardness in its core
Last Answer : (D) Carried out to get extreme hardness in its core
Description : __________ is not a case hardening process. (A) Carburising (B) Nitriding (C) Cyaniding (D) Annealing
Last Answer : (D) Annealing
Description : Globular form of cementite is formed during the __________ process. (A) Spheroidising (B) Hardening (C) Annealing (D) Normalising
Last Answer : (B) Hardening
Description : 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
Last Answer : (A) Annealing
Description : Steel is welded using the __________ flame. (A) Carburising (B) Neutral (C) Oxidising (D) All (A), (B) & (C)
Description : When the steel is subjected to normalising, its __________ decreases. (A) Yield point (B) Ductility (C) Ultimate tensile strength (UTS)
Last Answer : (B) Ductility
Description : A hardened steel essentially contains (A) Sorbite (B) Troostite (C) Martensite (D) None of these
Last Answer : (C) Martensite
Description : _________ is the hardest material out of the following. (A) Boron carbide (B) Tungsten carbide (C) Hardened steel (D) Silicon carbide
Last Answer : (A) Boron carbide
Description : Sub zero treatment of steel is done to (A) Suppress martensite transformation (B) Enhance its working performance in sub zero atmosphere (C) Reduce the retained austenite in hardened steel (D) Induce temper brittleness after its hardening
Description : Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft
Last Answer : (D) Soft
Description : The process of coating steel sheets by zinc to improve its corrosion resistance is called (A) Calorising (B) Galvanising (C) Zincification (D) Tempering
Last Answer : (B) Galvanising
Description : While playing with a metal washer shaped like a ring, Dave accidently pushed it on his finger too far and couldn't get it off. Trying to remove it using soap and water didn't work. The hospital ... and suggested an easy way to remove the washer in just a few minutes. What was his solution? -Riddles
Last Answer : Bob suggested that Dave hold his finger in the air while someone wound a piece of string tightly around his finger just above the metal ring. The string forced the swelling down. As they ... the ring up. They continued winding and unwinding the string until the ring could be easily removed.
Description : The disc is made from of 5mm-10mm thickness. a) Heat treated steel b) Case hardened steel c) Stainless steel d) High speed steel
Last Answer : Heat treated steel
Description : Indicate which of the following material does not retain magnetism permanently. (a) Soft iron (b) Stainless steel (e) Hardened steel (d) None of the above
Last Answer : (a) Soft iron
Description : Mould board are usually made from a. Soft centre steel b. Hardened carbon steel c. Chilled cast iron d. Mild steel
Last Answer : a. Soft centre steel
Description : Can softened drinking water trigger migranes?
Last Answer : Soft water is not good for drinking. It leeches metals from water lines and could very well cause some health problems, including migraines. Something in that water may be one of your "triggers".
Description : Putty is (A) Made with finely powdered chalk and linseed oil (B) Used for fixing glass panes (C) Softened by a solution of pearl ash and quick-lime soaked in water (D) All the above
Last Answer : Answer: Option D
Description : Recession of gingiva of several anterior teeth caused by exposure and softened cementum; what would you do? A. Scrap the soften cementum and apply fluoride B. Scrap the soften cementum and use GIC C. Class V amalgam
Last Answer : B. Scrap the soften cementum and use GIC
Description : To improve the machinability of steel by its softening, it is subjected to (A) Cold working (B) Annealing (C) Shot blasting (D) Heating
Description : Neutral atmosphere is maintained in a/an __________ furnace. (A) Cold rolled steel coil annealing (B) Open hearth (C) Soaking pit (D) Walking beam reheating
Last Answer : (A) Cold rolled steel coil annealing
Description : Pick out the wrong statement. (A) Addition of methane to the furnace atmosphere reduces decarburising by hydrogen (B) Nitrogen in presence of steam decor-burises high carbon steel, whereas hydrocarbon ... the metal surface) cause nitride formation with increase in surface hardness (D) None of these
Last Answer : (D) None of these
Description : Protective gas used in the annealing furnace for steel coil comprises of (A) 95% N2 + 5% H2 (B) 5% H2 + 9% N2 (C) 100% CO (D) 100% H2
Last Answer : (A) 95% N2 + 5% H2
Description : Reverberatory furnace is used for (A) Roasting/reduction of ores (B) Annealing steel coil (C) Heating air (D) Steel melting
Last Answer : (A) Roasting/reduction of ores
Description : High purity nitrogen is used in (A) Making protective gas (95% N2 + 5% H2 ) for annealing of cold rolled steel strip coils (B) Fire fighting purposes (C) Both (A) & (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) & (B)
Description : The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is (A) Full annealing (B) Bright annealing (C) Patenting (D) None of these
Last Answer : C) Patenting
Description : Pick the odd man out of the following. (A) Calorising (B) Pack carburising (C) Nitriding (D) Cyaniding
Last Answer : (A) Calorising
Description : Carbon supply in pack carburising process is in the form of (A) Charcoal (B) Calcium carbide (C) Hydrocarbon oil (D) Graphite
Last Answer : (A) Charcoal
Description : Normalising of a casting does not (A) Induce stresses in it (B) Refine its grain structure (C) Reduce segregation (D) Improve its mechanical properties
Last Answer : (A) Induce stresses in it
Description : Normalising of an object does not (A) Refine coarse grain structure obtained during hot working (B) Improve ductility (C) Improve yield strength (D) Improve mechanical properties
Last Answer : (B) Improve ductility
Description : Normalising does not __________ of a metal. (A) Improve machinability & tensile strength (B) Remove internal stresses (C) Refine the structure (D) Remove strains caused by cold working