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 Which of the following is not a characteristic observed in material failure by fatigue fracture ? Initation of crack occurs on the surface of the machine part Plastic deformation of material does not occur Initiation of crack from below the surface does not occur Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface Initation of crack occurs on the surface of the machine part Plastic deformation of material does not occur Initiation of crack from below the surface does not occur Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics The total frictional resistance to fluid flow does not depend upon the Roughness of the surface Fluid pressure Fluid velocity Fluid density Roughness of the surface Fluid pressure Fluid velocity Fluid density ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics What is the effect on the performance of the economiser in the thermal power plant boiler, if the feed water temperature is very low due to preheaters being out for repairs or starving of steam supply ? Scale formation rate on economiser tubes increases Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Economiser tube life increases due to handling of low temperature water Scale formation rate on economiser tubes increases Heat transfer efficiency of economiser increases due to picking up high heat from the flue gases It results in corrosion due to the condensation on the flue gas side of the economiser tubes due to handling of low temperature water Economiser tube life increases due to handling of low temperature water ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In a casting, cold shut defect is caused by Low pounhg temperature Very low mould permeability Melt-mould reactions Faulty gating system Low pounhg temperature Very low mould permeability Melt-mould reactions Faulty gating system ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Rankine cycle comprises of two isothermal and two __________ processes. Polytropic Isobaric Isentropic None of these Polytropic Isobaric Isentropic None of these ANSWER DOWNLOAD EXAMIANS APP
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