Materials and Construction __________ of a material results, when its strength is increased & ductility is decreased by heating at a relatively lower temperature after cold working. Twinning Screw dislocation Solid solution hardening Strain ageing Twinning Screw dislocation Solid solution hardening Strain ageing ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction As the impurities are oxidised, the melting point of iron Increases May increase or decrease ; unpredictable Remains unchanged Decreases Increases May increase or decrease ; unpredictable Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Plate and frame filter press is usually made of Stainless steel Cast iron Mild steel Galvanised iron Stainless steel Cast iron Mild steel Galvanised iron ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Locomotive boiler tubes are made of __________ alloys. Arsenic copper Nickel Magnesium Aluminium Arsenic copper Nickel Magnesium Aluminium ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Babbit metals used for making bearings are Yellow metals Tin or lead based alloys Having homogenous microstructure Short of antifrictional properties Yellow metals Tin or lead based alloys Having homogenous microstructure Short of antifrictional properties ANSWER DOWNLOAD EXAMIANS APP
Materials and Construction Polythene (low or high density) containers are not corroded by Nitric acid (95%) at room temperature Any of these Sulphuric acid (10%) at room temperature Sulphur trioxide at 60°C Nitric acid (95%) at room temperature Any of these Sulphuric acid (10%) at room temperature Sulphur trioxide at 60°C ANSWER DOWNLOAD EXAMIANS APP
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