35851. Locomotive boiler tubes are made of __________ alloys.
35852. Slow and progressive deformation of a material with time under constant stress is called
35853. In mac pherson-strut suspension system the upper end of the strut is attached to the
35854. Which of the following mechanical properties of a material is most structure insensitive ?
35855. Mercury is transported in metal containers made of
35856. Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?
35857. Which of the following has the least carbon percentage ?
35858. The range of Mho's scale of hardness is from
35859. Which of the following pairs of elements may form an alloy ?
35860. SO3 is absorbed using H2SO4 in a
35861. Carbon percentage in medium carbon steel is around
35862. The preferred material of construction for storage tanks for 98% sulphuric acid is
35863. The fermentor used for the production of ethyl alcohol from molasses is made of
35864. Super conductors are those substances, which
35865. Cermets are used for making
35866. The formation of oxide film on a metal due to atmospheric exposure reduces its
35867. A hardened steel essentially contains
35868. Which one contains the least percentage of carbon ?
35869. Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of
35870. All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain
35871. Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)
35872. Which of the following is not a copper based alloy with nickel ?
35873. Which of the following alloys does not contain nickel ?
35874. An elastic behaviour of materials is expressed in terms of
35875. Pure nickel is
35876. In drop forging process, the forging is done by dropping the __________ at high velocity.
35877. Which of the following is not an alloy of copper and tin ?
35878. __________ is never shipped in glass carboys.
35879. Lead is
35880. Nitriding of steel is done (in electric furnace) at __________ °C.
35881. Addition of 2% nickel in steel makes it suitable for making
35882. The softest material just next to talc in the Mhos scale is
35883. Fatigue strength of a material increases by
35884. Specify the material of construction suitable for handling concentrated HNO3 at 100°C.
35885. Aluminium storage vessel can be used to store
35886. Silicone rubber is not resistant to the corrosive action of
35887. Which metal is protected by the layer of its own oxide ?
35888. Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the
35889. Bog iron used for the adsorption of H2S from coke oven gas is
35890. Wrought iron is a suitable material of construction for handling __________ solutions.
35891. Steel rods are used in reinforced concrete to increase its __________ strength.
35892. Corrosion involves exchange of electrons in __________ corrosion.
35893. Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysterisis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
35894. To change reciprocating motion to rotary motion,the engine has
35895. __________ does not contain tin as an alloying material.
35896. A metallic alloy in general as compared to their pure metal components is
35897. In the diesel engine,the air is compressed to a little as
35898. When the gear ratio through the transmission is 1:1,the transmission is in
35899. Copper is dissolved from its ore by H2SO4 in a percolation tank made of
35900. Bearings subjected to light load are made of
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