Engineering Materials When low carbon steel is heated up to upper critical temperature The grain size first increases and then decreases very rapidly There is no change in grain size The average grain size is a minimum The grain size increases very rapidly The grain size first increases and then decreases very rapidly There is no change in grain size The average grain size is a minimum The grain size increases very rapidly ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following impurity in cast iron makes it hard and brittle? Manganese Phosphorus Sulphur Silicon Manganese Phosphorus Sulphur Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials The hardness and tensile strength in austenitic stainless steel can be increased by Full annealing Hardening and cold working Martempering Normalizing Full annealing Hardening and cold working Martempering Normalizing ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials For the allotropic forms of iron, the points of arrest are The points of discontinuity The points where no further change occurs Constant for all metals The points where there is no further flow of metal The points of discontinuity The points where no further change occurs Constant for all metals The points where there is no further flow of metal ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials A material is known as allotropic or polymorphic if it Has its atoms distributed in a random pattern Has a fixed structure under all conditions Exists in several crystal forms at different temperatures Responds to heat treatment Has its atoms distributed in a random pattern Has a fixed structure under all conditions Exists in several crystal forms at different temperatures Responds to heat treatment ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Ball bearings are, usually, made from Medium carbon steel Chrome steel Low carbon steel High carbon steel Medium carbon steel Chrome steel Low carbon steel High carbon steel ANSWER DOWNLOAD EXAMIANS APP
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