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

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bEvaporation efficiency

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cThermal efficiency

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dSteam load

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View Answer Evaporative capacity

Thermal conductivity of a material does not depend upon its_____________________?


aMass

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bVolume

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cSurface area

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dAll A, C & C

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View Answer All A, C & C

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


aGear

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bCentrifugal

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cReciprocating

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dPlunger

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View Answer Centrifugal

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


aAdd alloying elements

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bPrevent electrode from contamination

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cStabilise the arc

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dProvide protective atmosphere to weld

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


aAbrasion resistance

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bToughness

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cRed hardness

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dCutting speed

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View Answer Toughness

Transformer cores are normally made from ______________________?


aSoft ferrites

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bHigh purity iron

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cGrain oriented Fe-Si alloy

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dAl-Ni-Co alloy

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Pearlite comprises of__________________?


a87% cementite & 13% Fe

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b87% ferrite & 13% cementite

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c93.33% ferrite & 6.67% C

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d87% ferrite & 13% C

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Spheroidising of a material is a/an ________________ process?


aNormalising

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bAnnealing

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cTempering

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dHardening

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View Answer Annealing

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


aMach

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bReynolds

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cFroude

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dWeber

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View Answer Froude

Satellite is a _________________ material?


aFerrous

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bCeramic

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cCemented carbide

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dNon-ferrous cast alloy cutting tool

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