28952. The increase in hardness of metal due to its cold working is termed as the __________ hardening.
28953. The maximum axial compression stress during cold upsetting of a cylinderical rod of radius (r) occurs at
28954. Electrode potential is not concerned with the measurment of
28955. __________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.
28956. Tungsten in high speed steel is responsible for its
28957. With increase in carbon percentage in steel, its
28958. Percentage of gaunge is maximum in the ore of
28959. The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?
28960. Which group of medicine are commonly used to lower the body temperature?
28961. The most commonly used material for sewers for carrying sewage in the normal situation is
28962. Filler metal is used in __________ welding.
28963. Acetylene should never be conveyed through __________ pipe, as it forms an unstable compound that dissociates violently at the slightest shock.
28964. Which of the following contains the least percentage of carbon ?
28965. Electric arc furnace is employed mainly for the production of __________ steel.
28966. Heat treatment of steel is done mainly to change its
28967. __________ method of depreciation calculation ensures that the interest is charged on the cost of machine asset every year on the book value, but the rate of depreciation remains constant every year.
28968. Main alloying element in Elinvar used in precision instruments, hair springs for watches etc. is
28969. Color of brass changes from yellow to __________ after its dezincification which exemplifies selective leaching.
28970. Heat dissipation in cooling towers is mainly by
28971. In BOF, desiliconisation is a first order reaction. So the silicon content of the metal decreases
28972. Hoope's cell is predominantly used for the electrolytic refining of
28973. Lead percentage in pure galena is about
28974. The voltage generated at the power station is
28975. The life of a ball bearing is inversely proportional to
28976. 100% ethanol is commonly known as
28977. Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.
28978. Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?
28979. 'End cooler' or 'after cooler' is employed in air compressor mainly to
28980. Streaklines, streamlines & pathlines are almost identical for __________ fluid flow.
28981. The suction and delivery pressure for a two stage compressor are 1 and 25 atm respectively. The intermediate stage pressure would be around __________ atm.
28982. The term 'Value' in value engineering technique refers to the __________ cost of the product.
28983. Melting point & boiling points of liquid oxygen are respectively - 218.8°C & - 183°C, while the same for liquid nitrogen is - 210°C & - 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8
28984. The entropy change for a spontaneous process is
28985. Milligram of KOH required to saponify 1 gm of oil is called its __________ number.
28986. Pick out the wrong statement about a fast breeder reactor.
28987. The speed of sound will be maximum in
28988. Work done by a/an __________ process is determined by.
28989. In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is
28990. __________ number is sometimes used in place of Grashoff number in free convection heat transfer.
28991. Wrought iron does not have the
28992. Nitriding of steel is a process for
28993. The maximum percentage of chromium that can be added to steel is about
28994. Holes in a plate for rivetted joints is preferably made by
28995. The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.
28996. Source of heat supply in a cupola is
28997. Machine tool bodies are usually made of
28998. Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is
28999. On increasing the yield strength of a steel from 450 to 650 MPa, its __________ will increase.
29000. The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is
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