Engineering Materials Questions

• In spheroidising process, the steel is
• Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.
• The machinability of aluminium increases when __________ is added to aluminium.
• Which of the following statement is wrong?
• Which of the following inpurity in cast iron makes it hard and brittle?
• German silver contains
• In high speed steels, manganese is used to tougher the metal and to increase its
• Body centred cubic space lattice is found in
• Manganese is added in low carbon steel to
• Which of the following property is desirable for materials used in tools and machines?
• Corrosion resistance of steel is increased by adding nickel and chromium.
• The metal suitable for bearings subjected to heavy loads, is
• In iron, the presence of carbon in free form is called graphite.
• The compressive strength of cast iron is __________ that of its tensile strength.
• Gamma-iron occurs between the temperature range of
• Wrought iron
• Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
• Which of the following property is desirable in parts subjected to shock and impact loads?
• According to Indian standard specifications, a plain carbon steel designated by 40 C8 means that the carbon content is
• Connecting rod is, usually, made from