Chemical Engineering Basics Sub zero treatment of steel is done to Suppress martensite transformation Enhance its working performance in sub zero atmosphere Reduce the retained austenite in hardened steel Induce temper brittleness after its hardening Suppress martensite transformation Enhance its working performance in sub zero atmosphere Reduce the retained austenite in hardened steel Induce temper brittleness after its hardening ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Silicon crystal can be converted to p-type semi-conductor by doping with Carbon Nitrogen Phosphorous Boron Carbon Nitrogen Phosphorous Boron ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void. Equal to Less than Greater than Either A, B or C; depends on the size of atom Equal to Less than Greater than Either A, B or C; depends on the size of atom ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In radiative heat transfer, a grey surface is the one, which has Grey appearance to the eye Emissivity independent of wavelength Zero reflectivity Equal brightness in all directions Grey appearance to the eye Emissivity independent of wavelength Zero reflectivity Equal brightness in all directions ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics For the same heat input & compression ratio, efficiency of Otto cycle is higher than that of diesel cycle, because in Otto cycle. Maximum temperature is higher Combustion is at constant volume Heat rejection is lower Expansion & compression are isentropic Maximum temperature is higher Combustion is at constant volume Heat rejection is lower Expansion & compression are isentropic ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In extrusion of metals, which of the following statement is true ? Speed of the extruded material is same as that of ram speed Redundant work is a function of the die angle Relative motion between the billet surface and the container wall is always present Hollow ram is used for indirect extrusion Speed of the extruded material is same as that of ram speed Redundant work is a function of the die angle Relative motion between the billet surface and the container wall is always present Hollow ram is used for indirect extrusion ANSWER DOWNLOAD EXAMIANS APP
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