Chemical Engineering MCQs

Page No. 794

The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?


aEvaporative capacity


bEvaporation efficiency


cThermal efficiency


dSteam load


View Answer Evaporative capacity

Thermal conductivity of a material does not depend upon its_____________________?


aMass


bVolume


cSurface area


dAll A, C & C


View Answer All A, C & C

The type of pump used for lifting large quantity of sewage is a _________________ pump ?


aGear


bCentrifugal


cReciprocating


dPlunger


View Answer Centrifugal

Coating provided on the electrodes used in the arc welding is not expected to_________________?


aAdd alloying elements


bPrevent electrode from contamination


cStabilise the arc


dProvide protective atmosphere to weld



Non-ferrous alloys used for making cutting tools need not have high__________________?


aAbrasion resistance


bToughness


cRed hardness


dCutting speed


View Answer Toughness

Transformer cores are normally made from ______________________?


aSoft ferrites


bHigh purity iron


cGrain oriented Fe-Si alloy


dAl-Ni-Co alloy



Pearlite comprises of__________________?


a87% cementite & 13% Fe


b87% ferrite & 13% cementite


c93.33% ferrite & 6.67% C


d87% ferrite & 13% C



Spheroidising of a material is a/an ________________ process?


aNormalising


bAnnealing


cTempering


dHardening


View Answer Annealing

_______________ number determines whether the fluid flow in an open channel is super-critical, critical or sub-critical ?


aMach


bReynolds


cFroude


dWeber


View Answer Froude

Satellite is a _________________ material?


aFerrous


bCeramic


cCemented carbide


dNon-ferrous cast alloy cutting tool



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