Chemical Engineering MCQs

Page No. 800

Wohler test is a destructive test to find out the ___________________ strength of a prepared metal specimen ?


aCreep


bFatigue


cEndurance


dTensile


View Answer Fatigue

Powder metallurgy is used to produce__________________?


aHigh precision components with complex cavities and sharp features


bComponents of large size


cPorosity free components


dComponents of such alloys whose constituents do not form alloys readily



Primary designation of steel is based on its__________________?


aHardness & tensile strength


bCarbon content


cIron content


dAlloying elements content



The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is__________________?


aMore


bLess


cSame


dMore but less than the diameter of bolt


View Answer More

Moist climate is the most favourable factor in the site selection far a_________________?


aSteel plant


bTextile factory


cPetroleum refinery


dCoke oven battery


View Answer Textile factory

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the___________________?


aRetained austenite


bMartensite formation


cRelatively high sulphur content in the base metal


dSufficient hydrogen present in the welding arc


View Answer Martensite formation

Which of the following forces does not act on a fluid at rest ?


aViscous force


bGravity force


cHydrostatic force


dSurface tension force


View Answer Viscous force

On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the ______________ of the input signal?


aFrequency


bAmplitude


cDamping


dNone of these


View Answer Frequency

In connection with corrosion of metals, passivation is the process that__________________?


aIntensifies deterioration


bChanges the composition of the metal


cInhibits further deterioration


dNone of these



Tempering of a material does not improve its____________________?


aMachinability


bToughness


cInternal stress level


dSoftness


View Answer Machinability

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