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. Expansion & compression are isentropic Maximum temperature is higher Heat rejection is lower Combustion is at constant volume Expansion & compression are isentropic Maximum temperature is higher Heat rejection is lower Combustion is at constant volume ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In extrusion of metals, which of the following statement is true ? Relative motion between the billet surface and the container wall is always present Speed of the extruded material is same as that of ram speed Redundant work is a function of the die angle Hollow ram is used for indirect extrusion Relative motion between the billet surface and the container wall is always present Speed of the extruded material is same as that of ram speed Redundant work is a function of the die angle Hollow ram is used for indirect extrusion ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Nusselt number is related to Grashoff number (Gr) in turbulent & laminar flow respectively, in respect of free convection over a vertical flat plate as Gr0.25, Gr0.33 Gr, Gr0.25 Gr0.25, Gr Gr0.33, Gr0.25 Gr0.25, Gr0.33 Gr, Gr0.25 Gr0.25, Gr Gr0.33, Gr0.25 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics There are one octahedral void and __________ tetrahedral void in the closest packing of atoms. Two One Three None of these Two One Three None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Which of the following is not a characteristic observed in material failure by fatigue fracture ? Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface Initiation of crack from below the surface does not occur Initation of crack occurs on the surface of the machine part Plastic deformation of material does not occur Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface Initiation of crack from below the surface does not occur Initation of crack occurs on the surface of the machine part Plastic deformation of material does not occur ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase. Convection Conduction Radiation Nucleate boiling Convection Conduction Radiation Nucleate boiling ANSWER DOWNLOAD EXAMIANS APP
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