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You Are On Multi Choice Question Bank SET 317

15851. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about





15852. Which of the following alloying elements is present in maximum percentage in high speed steel.





15853. __________ is a non volatile film forming constituent of a paint.





15854. According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.




15855. Transformer cores are normally made from





15856. __________ test is the appropriate test to determine whether a material is ductile or brittle.





15857. Main constituent of bone ash is





15858. Tempering of a material does not improve its





15859. High relative humidity decreases the evaporative process and as the temperature is increased, the relative humidity decreases. The comfort range for human body is the ambient temperature of 22 to 27°C with relative humidity ranging from __________ percent.





15860. Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?




15861. __________ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500°C.





15862. Heat release during phase change is observed in case of a/an





15863. The hardenability of steel decreases with





15864. Pick out the correct statement about the condensation.





15865. Change in volume of metals from absolute zero temperature to their melting points is





15866. Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.





15867. Alloy powder manufactured by the following process have spherical shapes.





15868. The instrument based on the following principle is used for the measurement of oxygen only in the flue gases.





15869. Work study deals with the __________ study.





15870. Maximum change in the hardness of mar tensite occurs in the carbon content range of __________ percent in steel.





15871. Knocking tendency in a petrol engine decreases with increasing





15872. Hooke's law





15873. Which of the following is not an ore of iron ?





15874. Which is the most lethal weapon ?





15875. Reynolds number of a fluid flowing in a circular pipe is 10000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?





15876. An example of unsteady non uniform flow is the flow of liquid under pressure through a





15877. Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?





15878. A colloidal system, in which a liquid is dispersed in gas is called a/an





15879. Blast furnace is a





15880. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an





15881. The primary strengthening mechanism in 70 : 30 brass is the





15882. X-rays do not exhibit the property of





15883. Killed steels





15884. Which of the following phenomenon/ phenomena is/are diffusion controlled ?





15885. Joule-Thomson co-efficient is the ratio of





15886. Expansion device used in a window air-conditioner is a/an





15887. In the acid Bessemer process, the hot metal should have the following com-positon.





15888. Which of the following does not come under the category of electrochemical corrosion ?





15889. Unbreakable crockeries are made from __________ polymers.




15890. Cupola produces __________ iron..





15891. Euler number is defined as the ratio of inertia force to __________ force.





15892. Holes for rivetting purposes should be preferably made by





15893. One of the methods of purification of leach liquor is ion exchange, which involves





15894. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place





15895. Large diameter shafts are manufactured by





15896. Common salt is produced from sea water in India generally by the __________ method.





15897. Batch process is preferred over continuous process, when the





15898. Which of the following is a permanent fastening?





15899. Hot & cold working of material causes its __________ deformation.





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