Description : Fast breeder reactors do not (A) Use Th-232 as fissile fuel (B) Convert fertile material to fissile material (C) Use fast neutrons for fission (D) Use molten sodium as coolant
Last Answer : (A) Use Th-232 as fissile fuel
Description : A fast breeder reactor (A) Utilises fast neutrons for causing fission (B) Converts fertile material (e.g., U-238) into fissile material (Pu-239) (C) Normally employs molten sodium as coolant (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A fertile material is the one, which can be (A) Converted into fissile material on absorption of neutron (B) Fissioned by slow (thermal) neutrons (C) Fissioned by fast neutrons
Last Answer : (A) Converted into fissile material on absorption of neutron
Description : Enriched uranium means that, it contains (A) More than 0.71% of U-235 (B) Only fertile material (C) Only fissile material (D) No impurities
Last Answer : (A) More than 0.71% of U-235
Description : The main purpose of control rod in a nuclear reactor is to control the (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission (B) ... radiation (C) Conversion of fissile material into fertile material (D) Velocity of the secondary neutrons
Last Answer : (A) Chain reaction and hence the power output by regulating the number of secondary neutrons causing fission
Description : Thorium-232 (a fertile material) on absorption of a neutron gets converted into __________ , which is a fissile material. (A) Thorium-233 (B) Uranium-235 (C) Uranium-233 (D) Plutonium-239
Last Answer : (C) Uranium-233
Description : If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor. (A) Critical (B) Breeder (C) Fertile (D) Heterogeneous
Last Answer : (B) Breeder
Description : In a breeder reactor --------- a. amount of fuel decreases b. amount of fuel increases c. amount of fuelremain same d. fissile material is converted in to fertile
Last Answer : b. amount of fuel increases
Description : Which of the following nuclear materials is fissile? (A) Uranium-238 (B) Thorium-232 (C) Plutonium-239 (D) None of these
Last Answer : (C) Plutonium-239
Description : Define Fertile Materials And Breeding In Reactors?
Last Answer : There are materials like U 235 and Th232 which are not fissile but can be converted into fissile materials by the bombardment of neutrons. Such materials are known as fertile materials. The process of converting more fertile material into fissile material in a reaction is known as breeding.
Description : Critical mass" is the minimum mass of nuclear fissile material required for the (A) Sustainment of chain reaction (B) Power generation on commercial scale (C) Economic power generation (D) None of these
Last Answer : (A) Sustainment of chain reaction
Description : A homogeneous reactor is the one, in which the (A) Fissile atoms are evenly distributed throughout the mass of nuclear reactor (B) Same substance (e.g. heavy water) is used as moderator & coolant (C) The fuel and the moderator is mixed to form a homogeneous material (D) All (A), (B) and (C)
Last Answer : (C) The fuel and the moderator is mixed to form a homogeneous material
Description : Which is not a fissile nuclear material? (A) U-233 (B) U-235 (C) U-238 (D) Pu-239
Last Answer : (C) U-238
Description : Critical mass" is the minimum mass of nuclear fissile materialrequired for the (A) Sustainment of chain reaction (B) Power generation on commercial scale (C) Economic power generation (D) None of these
Description : Thermal nuclear reactors using enriched uranium as fuel contains a maximum of __________ percent fissile material i.e. U-235. (A) 1 (B) 2 (C) 3 (D) 7
Last Answer : (C) 3
Description : Which of the following is a non-fissile material? (A) Plutonium-239 (B) Uranium-235 (C) Uranium-233 (D) Thorium-232
Last Answer : (D) Thorium-232
Description : Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of __________ percent of U-235 (i.e. fissile material). (A) 15 (B) 45 (C) 65 (D) 85
Last Answer : (D) 85
Description : Thorium is mainly used (A) For the manufacture of gas mantles (B) As a fissile fuel in a nuclear reactor (C) In the manufacture of hydrogen bomb (D) In the treatment of cancer
Last Answer : (A) For the manufacture of gas mantles
Description : Which of the following is a fissile fuel 1 carbon 2 potassium 3 thorium 4 graphite
Last Answer : 3 thorium
Description : Which of these is a ‘fissile fuel’? a. Thorium b. Carbon c. Potassium d. Graphite
Last Answer : a. Thorium
Description : What is the difference between isotropic and anisotropic materials ?
Last Answer : If a material exhibits same mechanical properties regardless of loading direction, it is isotropic, e.g., homogeneous cast materials. Materials lacking this property are anisotropic.
Description : Explain About Common Types Of Pipe Materials And How Are Pipes Specified?
Last Answer : Pipes are commonly made of cast iron , steel, copper, lead, zinc, galvanized iron(G.I) wrought iron , aluminium and also cement and plastic pipes are used. Generally pipes are specified by the length, material, bore size.
Description : ____ grippers are used to pick up light weight materials such as paper,cloth etc a.Mechanical grippers b.Adhesive grippers c.Vacuum cup grippers d.Magnetic grippers
Last Answer : b.Adhesive grippers
Description : A combination of equipment and controls which handles, stores and retrieves materials withprecision,accuracy and speed under a defined degree of automation is known as ____ a.Automated storage and retrieval system (AS/RS) b.Flexible manufacturing system c.Automated guided vehicle d.None of the above
Last Answer : a.Automated storage and retrieval system (AS/RS)
Description : Which materials possess highest melting temperature? a.ABS b.PLA c.Nylon d.INF
Last Answer : c.Nylon
Description : Which of the following is used as base material in Selective laser sintering (SLS)? a.Photopolymer b.Thermoplastics, Metal powders c.Titanium alloys d.Various materials
Last Answer : b.Thermoplastics, Metal powders
Description : Which of the following is used as base material in Electron Beam Melting (EBM) process? a.Titanium alloys b.Photopolymer c.Various materials d.Paper
Last Answer : a.Titanium alloys
Description : Give one example each of the following proportion of materials dimensional, physical, technological and mechanical.
Last Answer : Roughness, enthalpy, toughness, and hardness respectively.
Description : Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?
Last Answer : For ductile materials, theories of failure used are maximum shear stress theory, and maximum energy of distortion theory; while for brittle materials, theory of maximum principal stress, and maximum strain are used.
Description : Whether individual components in composite materials retain their characteristics or not?
Last Answer : yes.
Description : Specific strength of materials is very high when they are in fibre size but lower when they are in bar form Why ?
Last Answer : Crystal structure has ordered, repeating arrangement of atoms. Fibres are liable to maintain this and thus have high specific strength. As size increases, the condition of ordered and repeating ... because of several types of defects and dislocations and thus the specific strength gets lower.
Description : What are orthotropic materials ?
Last Answer : It is a special class of anisotropic materials which can be described by giving their prop¬erties in three perpendicular directions e.g. wood; composites.
Description : Disposal of radioactive waste materials and spent fuel is a major and important technology. How the waste radioactive material is disposed off ?
Last Answer : Nonusable fission products are radioactive and take short/medium/long time for radioactive decay to reach safe level of radioactivity. Accordingly three methods of disposal are : (a) Zero or low ... are stored in water for several months to permit radioactive decay to an accepetable low level.
Description : Harrow is a tillage implement that cuts the soil to shallow depth for smoothening and pulverizing the soil as well as to cut weeds and to mix the materials with the soil. a. Primary. c. Tertiary b. Secondary. d. None
Last Answer : Secondary
Description : In which process, Purification of raw materials by removing foreign matter (a) Harvesting (c) Primary (b) Secondary (d) Tertiary
Last Answer : Primary
Description : are the applications of cutting bar. a) Cutting metal sheets. b) Cutting glass type materials. c) Cutting grasses and forage. d) None of these
Last Answer : Cutting grasses and forage
Description : In any industry,the three top operating expenses are often Found to be energy a) electrical & thermal. c) none b) labour and materials. d) option a & b
Last Answer : option a & b
Description : The form of implementing the new energy efficiency technologies, new materials and new manufacturing process is ____________ A. Energy management C. Energy savings B. Energy audit D. All of the above
Last Answer : Energy management
Description : Energy savings is not the driving face when companies decide to purchase ___ A. New equipment C. New technologies B. Ne resources D. New low tech materials
Last Answer : New equipment
Description : Which of the following statute made transportation of hazardous materials illegal? a) 1869 b) 1870 c) 1871 d) 1872
Last Answer : 1871
Description : When was the first law regarding transportation of hazardous materials passed? a) 1966 b) 1866 c) 1855 d) 1965
Last Answer : 1866
Description : Identical objects of four different materials are heated to the same high temperature. Which of the following would least likely burn your hand if touched? a. aluminium b. brass c. glass d. concrete
Last Answer : glass
Description : How can I know when I'm most fertile??
Last Answer : To be precise, you should probably use a kit that tracks ovulation (available Over The Counter at most drugstores). Pee on the stick, get the result. Give it a try. Good luck!
Description : How will I notice that my sperm are not fertile?
Last Answer : ~By taste. Have a doctor request a seamen sample to a lab will check your swimmers.
Description : Human Females are unique among all mammalians. Why do you think the ability to hide fertile time periods evolved in human women?
Last Answer : Ummm, what?
Description : What are two ways to get fertile ideas for a creative project in your opinion ?
Last Answer : I get ideas for my art projects by looking around where ever I go. I watch for color combinations that are pleasing to me, and for lines and placements that will fit in my design. I carry a little sketch pad where ever I go and make notes and sketches frequently.
Description : How do seeds know when they have reached fertile soil?
Last Answer : Nutrients dissolve in water thus allowing the plant to uptake them via roots. I don't think plants know. There is no consciousness. If there is fertile soil and ample water (but not too much), conditions ... if you have food and water you grow, and if you don't you starve and dehydrate and die.
Description : Are the eggs we buy at a store fertile?
Last Answer : No!
Description : how do you tell if an eastern wil turkey egg is fertile
Last Answer : Need Answer
Description : Give a geographic reason for each of the following : (i) Alluvial soil is extremely fertile. -Geography
Last Answer : Geographical reasons: (i) Alluvial soil is extremely fertile because it is found to a depth of 500 m and rich in humus, lime and potash. (ii) There is a need for soil conservation ... be practised extensively because the area under forest cover is shrinking day by day due to urbanization etc.