Description : Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of (A) 90% tungsten carbide and 10% cobalt (B) 70% aluminium oxide & 30% silica (C) 30% nickel, 15% chromium & 55% tungsten (D) 65% tungsten & 35% zirconium
Last Answer : Option A
Description : Powder metallurgy technique is used in the production of __________ tools. (A) Tungsten carbide (B) High carbon steel (C) High speed steel (D) Drilling
Description : For preparation of porous bearings by powder metallurgy, preferred particle shape is (A) Spherical (B) Nodular (C) Irregular (D) No preferred shape
Last Answer : (A) Spherical
Description : The process of heating the cold pressed metallic powder is called __________ in powder metallurgy. (A) Precipitation (B) Fusion (C) Sintering (D) Agglomeration
Last Answer : (C) Sintering
Description : Tin coating on metals is not done by (A) Spraying (B) Powder metallurgy (C) Hot dipping (D) Electro-deposition
Last Answer : (B) Powder metallurgy
Description : Powder metallurgy is used to produce (A) High precision components with complex cavities and sharp features (B) Components of large size (C) Porosity free components (D) Components of such alloys whose constituents do not form alloys readily
Last Answer : (C) Porosity free components
Description : Powder metallurgy process does not make metal powder by (A) Atomisation (B) Grinding/milling (C) Hammering (D) Electrolytic deposition
Last Answer : Option C
Description : In primitive days, __________ was being manufactured by Leblanc Process. (A) Alum (B) Washing soda (C) Soda ash (D) Calcium carbide
Last Answer : (C) Soda ash
Description : What are the properties of powder metallurgy ?
Last Answer : The advantages of powder metallurgy are given below: All the products which cannot be made in any other way , can be made in this way. Products can also be made with a mixture of metallic ... case of mass production. Skilled workers are not needed. The product produced is very smooth and beautiful.
Description : What is powder metallurgy ?
Last Answer : The branch of metallurgy which deals with the preparation of metal powders and the use of specific heat and pressure from that powder to make human service utensils or desirable working materials and their properties is called powder metallurgy .
Description : Fire refining process is employed in case of (A) Tin (B) Copper (C) Zinc (D) Aluminium
Last Answer : (B) Copper
Description : Highest cutting speed is achieved by the __________ tool material. (A) High speed steel (B) Carbide (C) Cast alloy (D) Plain carbon steel
Last Answer : (B) Carbide
Description : Stellite is a __________ material. (A) Ferrous (B) Ceramic (C) Cemented carbide (D) Non-ferrous cast alloy cutting tool
Last Answer : (D) Non-ferrous cast alloy cutting tool
Description : Alloy powder manufactured by the following process have spherical shapes. (A) Electrochemical deposition (B) Gaseous reduction (C) Atomisation (D) Mechanical attrition
Last Answer : (C) Atomisation
Description : Which of the following is a function of Vitamin A in the body? A. Vision, bone and body growth B. Immune defenses, maintenance of body linings and skin C. Normal cell development and reproduction D. All of the above (Answer)
Last Answer : D. All of the above (Answer)
Description : For concreting tunnel linings, transportation of concrete is done by (A) Pans (B) Wheel borrows (C) Containers (D) Pumps
Last Answer : (D) Pumps
Description : Name the type of cement from the following for canal linings: (A) Sulphate resisting cement (B) Rapid hardening cement (C) Quick setting cement (D) Pozzolana cement
Last Answer : Answer: Option A
Description : Any tips and techniques for using metal studs when framing a basement?
Last Answer : Try these and see if they have what you are looking for. http://www.toolbase.org/PDF/DesignGuides/BuildersSteelStudGuide.pdf http://video.bobvila.com/m/21320131/basement-finishing-system-installation.htm
Description : Corporate social responsibility that extends beyond legal mandates can help meet societal expectations in the absence of A. Statutory devices B. Social tool C. Cost tool and Techniques D. Science tool
Last Answer : A. Statutory devices
Description : Many sophisticated techniques or tolls are useful in decision-making. Which of the following is a tool that helps managers figure out how much to produce and points out the relationship between revenues, ... Marginal analysis ; (b) Breakeven analysis ; (c) Ratio analysis ; (d) Financial analysis
Last Answer : (b) Breakeven analysis ;
Description : Identify the correct statement with reference to the extractive metallurgy of aluminium. (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 (B) Approximately 80% of ... is immediately vaporised (D) Anode effect sets in when the cryolite concentration goes below 40%.
Last Answer : (A) The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3
Description : Explain manufacturing of Acetylene using Calcium carbide as a raw material.
Last Answer : Acetylene from CaC2 Raw materials: lime stone, coke, water Chemical reactions: CaO + 3C CaC2 + CO CaC2 + H2O Ca(OH)2 + CH≡CH Process Description: Calcium carbide is produced ... decomposes violently at 650˚C . Hence temperature is maintained below 150˚C and 30 cm of water pressure.
Description : State general steps involved in metallurgy of a metal. -Science
Last Answer : The general steps of metallurgy are : Concentration of ore. Reduction of the metal compound. Refining of metal.
Description : Explain the term ‘metallurgy’. -Science
Last Answer : Metallurgy is the science of extracting metals from their ores and purifying them for various uses.
Description : evidence seems to suggest that the art of metallurgy began in _____. -General Knowledge
Last Answer : Evidence seems to suggest that the art of metallurgy began in Africa.
Description : what are Metallurgy Service?
Last Answer : Metals and alloys have been used extensively in personal appliances and industrial instruments due to their excellent mechanical property, as well as electrical and thermal conductivity. Among different types of ... For example, carbon steel which is also known as mild steel is useful for making
Description : How many of the given metals can be obtained by carbon reduction in their extractive metallurgy
Last Answer : How many of the given metals can be obtained by carbon reduction in their extractive metallurgy
Description : Which of the following process is used in the extractive metallurgy of magnesium ?
Last Answer : Which of the following process is used in the extractive metallurgy of magnesium ? A. ... C. Aqqueos solution electrolysis D. Therminte reducation
Description : Which of the following statement is incorrect about the extractive metallurgy of coper?
Last Answer : Which of the following statement is incorrect about the extractive metallurgy of coper? A. Matte ... Bessomer converter is called as blister copper.
Last Answer : Which of the following process is used in the extractive metallurgy of magnesium ? A. ... C. Aqueous solution electrolysis D. Thermite reduction
Description : In the metallurgy of iron, when limestone is added to the blast furnace,the calcium ions end up in
Last Answer : In the metallurgy of iron, when limestone is added to the blast furnace,the calcium ions end up ... B. Gangue C. Metallic calcium D. Calcium Carbonate
Description : Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron metallurgy)?
Last Answer : Which one of the following reactions occur during smelting in the reduction zone at lower temperature(in iron ... CO` D. `CO_(2)+C rarr 2CO`
Description : ELECTROCHEMICAL PRINCIPLE OF METALLURGY
Last Answer : ELECTROCHEMICAL PRINCIPLE OF METALLURGY A. In simple electrolysis, the `M^(n^(+))` ions are ... +ve and the reaction would not be feasible.
Description : In the metallurgy of aluminium,
Last Answer : In the metallurgy of aluminium, A. graphite anode is oxidised to carbon monoxide and carbon ... in the overall reaction involved in the process
Description : In the metallurgy of Fe, when `CaCo_(3)` is added to blast furnace, calcicum ion appears as
Last Answer : In the metallurgy of Fe, when `CaCo_(3)` is added to blast furnace, calcicum ion appears as A. CaO B. metallic C. ggangue D. slag
Description : In extractive metallurgy of lead, the reduction of the roasted ore to the molten metal by heating with coke is called
Last Answer : In extractive metallurgy of lead, the reduction of the roasted ore to the molten metal by heating with ... B. roasting C. calcination D. None of these
Description : Hydro metallurgy is used in the extraction of
Last Answer : Hydro metallurgy is used in the extraction of A. Cu B. Au C. Ag D. All
Description : What os mechanical metallurgy?
Last Answer : Need answer
Description : Which process is generally used in extracting magnesium in metallurgy?
Last Answer : Fused salt electrolysis is generally used in extracting magnesium in Metallurgy. In the extraction of metal, magnesium is usually extracted by the electrolysis of fused anhydrous MgCl2 because of its reactive nature. Another process uses silicon to reduce magnesium oxide.
Description : The names of the scientists, Newlands, Mendeleev and Meyer are associated with the development of (a) Atomic structure (b) Metallurgy (c) Periodic table of elements (d) Discovery of elements
Last Answer : Ans:(c)
Description : Write a note on contributions of Indians to metallurgy.
Last Answer : a) Romans used armour and cutlery made from Indian iron. b) Indian metallurgist Nagarjuna wrote the book Rasaratnakara' in 9th century BC which explained the preparation of various metallic ... near Qutab Minar constructed by Vikramadithya about 1600 years ago has withstood the action of weather.
Description : Explain the following terms with reference to metallurgy.
Last Answer : a) Gangue The unwanted impurities present in the ore are called gangue. b) Concentration of ore The process of removing the gangue particles to increase the percentage of desired component of the ore ... flux. f) Slag The substance formed by the combination of impurities like sand is called slag.
Description : Define metallurgy.
Last Answer : The technology of extraction of metals from their ores and refining them to required form is called metallurgy.
Description : Although thermodynamically feasible, in practice, Magnesium metal is not used for the reduction of Alumina in the metallurgy of aluminium.Why?
Last Answer : Ans. : Below the temperature(1623 K) correspoinding to the point of intersection of Al 2O3 and MgO curves in Ellingham diagram, Magnesium can reduce Alumina because the ΔfG o value of Al2O3 at ... to Al. But Magnesium is much costier metal than Aluminium and hence the process will be uneconomical.
Description : What is Metallurgy ?
Last Answer : Metallurgy: The process used for extraction of metals in their pure from their ores is called Metallurgy.
Description : Froth Flotation process is used for the metallurgy of
Last Answer : Sulphide ore
Description : Honorable PM of India declared 2012 to be the National ______ Year (a) Phyics (b) Mathematical (c) Nano Science (d) Metallurgy
Last Answer : (b) Mathematical
Description : Define the term metallurgy. Name the process of extraction of Aluminium.
Last Answer : Metallurgy:-The process of extraction of metal from its ore economically & profitably is called as metallurgy. The process used for extraction of Aluminium metal is Bayer’s process, Electrolytic reduction of alumina, Electrolytic refining.
Description : Any tips for SUP (Stand up paddle boarding) techniques, do's and dont's and purchase?
Last Answer : Rent first, wider and longer are better. Start out paddling on protected cove or bay, less wave action. Enjoy yourself.
Description : Tips/techniques for swimming as exercise?
Last Answer : I always warmed up with side stroke alternating sides, and then did the crawl for the bulk of my workout, cooling down with some breaststroke followed by back stroke. Here is a swimmer's site with a list ... ones. I never got bored enough to switch around. I guess because I love being in the water.