Engineering Materials A material is said to be allotropic, if it has Different crystal structures at different temperatures Atoms distributed in random pattern Fixed structure at all temperatures Any one of the above Different crystal structures at different temperatures Atoms distributed in random pattern Fixed structure at all temperatures Any one of the above ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal? Sulphur Phosphorus Manganese Silicon Sulphur Phosphorus Manganese Silicon ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In nodular iron, graphite is in the form of Cementite Free carbon Spheroids Flakes Cementite Free carbon Spheroids Flakes ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Quenching is not necessary when hardening is done by Nitriding Case hardening Any one of these Flame hardening Nitriding Case hardening Any one of these Flame hardening ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials Which of the following is used for bearing liner? Bell metal Gun metal Babbitt metal Bronze Bell metal Gun metal Babbitt metal Bronze ANSWER DOWNLOAD EXAMIANS APP
Engineering Materials In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled Slowly in the furnace Any one of these In still air Suddenly in a suitable cooling medium Slowly in the furnace Any one of these In still air Suddenly in a suitable cooling medium ANSWER DOWNLOAD EXAMIANS APP
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