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 : 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 : Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Last Answer : (B) Tempering
Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising
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 used for softening the hardened material? (A) Normalising (B) Tempering (C) Annealing (D) None of these
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 : Post weld heat treatment is done by (A) Normalising (B) Stress relieving (C) Tempering (D) Solution annealing
Last Answer : (B) Stress relieving
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 : Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening
Last Answer : (B) Annealing
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 : 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 : o improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing
Last Answer : Option A
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 : 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 : 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 : 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 : A post weld heat treatment may also be of benefit in minimizing the risk of weld decay, this heat treatment would be called? a) Stress relief b) Normalizing c) Quench and Tempering d) Solution treatment over 1000 °C
Last Answer : d) Solution treatment over 1000 °C
Description : Which of the following is a heat treatment furnace? (A) Muffle furnace (B) Annealing furnace (C) Reheating furnace (D) Rotary kiln
Last Answer : (B) Annealing furnace
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 : Which of the following processes is absent in glass manufacturing process? (A) Sintering (B) Annealing (C) Shaping or forming (D) Melting
Last Answer : (A) Sintering
Description : While normal carburising and nitriding surface treatments increase fatigue strength, excessive treatment may decrease the fatigue strength. Why ?
Last Answer : .Normal carburising/nitriding treatments increase volume due to phase transformation at Surface and introduce residual compressive surface stress and thus increase the fatigue strength. By excessive treatment the ... develop in the regions of high tensile stress and lead to early fatigue failure.
Description : Presence of silicon in steel (A) Is in the form of free Si (B) Indicates that steel is not deoxidised properly (C) Decreases the blow holes formation tendency in castings (D) None of these
Last Answer : (C) Decreases the blow holes formation tendency in castings
Description : Chilled iron castings are (A) Easily machinable (B) Soft on surface (C) Highly wear resistant (D) None of these
Last Answer : (C) Highly wear resistant
Description : Silicon percentage in iron castings to have maximum hardness should be about (A) 0.3 (B) 0.5 (C) 0.8 (D) 2.5
Last Answer : (C) 0.8
Description : Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an (A) Blast furnace (B) Steam boiler (C) Salt bath furnace (D) Annealing furnace
Last Answer : (C) Salt bath furnace
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 : Steel is welded using the __________ flame. (A) Carburising (B) Neutral (C) Oxidising (D) All (A), (B) & (C)
Description : Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is __________ percent. (A) 0.02 (B) 0.2 (C) 0.35 (D) 0.5
Last Answer : (B) 0.2
Description : America's Next Top Model.. Tapes or Castings?
Last Answer : http://www.cwtv.com/thecw/topmodel-cycle13-Casting Looks like you have to attend one of the casting calls and download and complete the application to bring with you. (Google is really very easy to use)
Description : Which of the following are examples of appropriate applications of additive manufacturing inthe actual production of parts and products? a.Castings made in small quantities b.Plastic parts in small batch sizes c.Mass-produced metal parts d.Special textile products
Last Answer : b.Plastic parts in small batch sizes
Description : Pheretima posthuma is highly useful as (a) their burrows make the soil loose (b) they make the soil porous, leave their castings and take organic debris in the soil (c) they are used as fish meal (d) they kill the birds due to biomagnification of chlorinated hydrocarbons.
Last Answer : (b) they make the soil porous, leave their castings and take organic debris in the soil
Description : Flanges and flanged fittings may be constructed of which of the following materials? a) Castings. b) Forgings. c) Plate. d) All of the above.
Last Answer : d) All of the above.
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 : 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
Description : The figure below shows three steps (A, B, C) of Polymerase Chain Reaction (PCR). Select the option giving correct identification together with what it represents? A. B. C ds DNA 3 5 5 3 ... - extension in the presence of heat stable DNA polymerase (d) A - annealing with two sets of primers
Last Answer : (c) C - extension in the presence of heat stable DNA polymerase
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 : What is the range of tempering temperature (°C) for most of the materials? (A) 75-100 (B) 200-300 (C) 350-450 (D) 500-600
Last Answer : (B) 200-300
Description : Tempering of a material does not improve its (A) Machinability (B) Toughness (C) Internal stress level (D) Softness
Last Answer : A) Machinability