Description : Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening
Last Answer : (B) Annealing
Description : Nitriding of steel is a process for (A) Case hardening (B) Spheroidising (C) Normalising (D) Annealing
Last Answer : (A) Case hardening
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 : 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 : 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 : 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 : Cold worked steel parts are normally subjected to (A) Normalising (B) Hardening (C) Annealing (D) Shot peening
Last Answer : (C) Annealing
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 : __________ of hard alloy and tool steel is done to make it easily machinable. (A) Case carburising (B) Tempering (C) Normalising (D) Annealing
Last Answer : (B) Tempering
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 : __________ is not a case hardening process. (A) Carburising (B) Nitriding (C) Cyaniding (D) Annealing
Last Answer : (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 : Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising
Description : Post weld heat treatment is done by (A) Normalising (B) Stress relieving (C) Tempering (D) Solution annealing
Last Answer : (B) Stress relieving
Last Answer : (A) Normalising
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 : 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 : 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 : Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating. (A) Cementite (B) Austenite (C) Martensite (D) Pearlite
Description : Distinguish between hardening and normalising.
Last Answer : Hardening Normalizing 1. It is the process of heating steel at high temperature (800-9000C) and then suddenly cooled by dipping or quenching in some suitable medium. 1. It is the ... hardening. 6. It creates stresses in structure 6. It removes coarser grained structure.
Description : Cementite is in the lamellar form in the __________ phase of steel. (A) Martenistic (B) Bainitic (C) Pearlitic (D) Ferritic
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 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 : What is the mode of metal transfer for the TIG (GTAW) welding process? a) Spray Transfer b) Globular Transfer c) Dip Transfer d) None of the above
Last Answer : d) None of the above
Description : Which of the following is the hardest? (A) Cementite (B) Pearlite (C) Austenite (D) Ferrite
Last Answer : (C) Austenite
Description : Cementite is (A) Fe3C chemically (B) A compound of carbon and iron (C) Characterised by an orthorhombic crystal structure (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Pearlite comprises of (A) 87% cementite & 13% Fe (B) 87% ferrite & 13% cementite (C) 93.33% ferrite & 6.67% C (D) 87% ferrite & 13% C
Last Answer : (B) 87% ferrite & 13% cementite
Description : Eutectoid composition of carbon steel at room temperature is (A) Cementite (B) Pearlite (C) Martensite (D) Ferrite
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 : Oxide layer formed on the non-ferrous metal surface after its annealing is (A) Removed by acid pickling (B) Hammered into the surface (C) Removed with coarse emery cloth
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 : Occurrence of 'case hardening' during drying of a high moisture solid cake __________ the drying rate. (A) Increases (B) Decreases (C) Does not affect
Last Answer : (B) Decreases
Description : Explain The Difference Between Pear Lite And Cementite?
Last Answer : Pearlite is a eutectoid mixture of ferrite and cementite. Cementide is a chemical compound of iron and carbon.
Description : Which of the following materials is used along with iron ore and limestone to produce iron in a modern blast furnace? w) coke x) cementite y) coal z) bauxite
Last Answer : ANSWER: W -- COKE
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 : __________ iron is produced by the annealing of white cast iron. (A) Malleable (B) Nodular (C) Ductile (D) Grey
Last Answer : (A) Malleable
Description : Annealing of white cast iron produces __________ iron. (A) Grey (B) Nodular (C) Malleable (D) Spheroidal
Last Answer : (C) Malleable
Description : To counteract the bad effects of strain hardening on a cold formed part, it must be (A) Tempered (B) Normalised (C) Annealed (D) Hardened
Description : Difference between fibrous proteins and globular proteins? -Biology
Last Answer : answer:
Description : Select the total number of false statement from the following (i) The globular head is an active ATPase enzyme and has binding sites for ATP and activ
Last Answer : Select the total number of false statement from the following (i) The globular head is an active ATPase enzyme and has ... arm A. 5 B. 4 C. 2 D. 1
Description : Where in the spiral galaxy you would expect to find globular clusters?
Last Answer : Need answer
Description : Many globular proteins are stable in solution although they lack in (A) Hydrogen bonds (B) Salt bonds (C) Non-polar bonds (D) Disulphide bonds
Last Answer : Answer : D
Description : A coiled structure in which peptide bonds are folded in regular manner by (A) Globular proteins (B) Fibrous proteins (C) Both (A) and (B) (D) None of these
Last Answer : Answer : A
Description : Globular proteins have completely folded, coiled polypeptide chain and the axial ratio (ratio of length to breadth) is (A) Less than 10 and generally not greater than 3–4 (B) Generally 10 (C) Greater than 10 and generally 20 (D) Greater than 10
Description : Many globular proteins are stable in solution inspite they lack in (A) Disulphide bonds (B) Hydrogen bonds (C) Salt bonds (D) Non polar bonds
Description : Collagen is (a) fibrous protein (b) globular protein (c) lipid (d) carbohydrate.
Last Answer : (a) fibrous protein
Description : The primary structure of a protein refers to : (a) whether the protein is fibrous or globular (b) the amino acid sequence in the polypeptide chain (c) the orientation of the amino acid side chains in space (d) the presence or absence of an α-helix
Last Answer : the amino acid sequence in the polypeptide chain
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