Chemical Engineering MCQs

Page No. 798

According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to _______________ times the yield stress ?


a0.5


b2


c√2


d√3/2


View Answer 0.5

Rankine cycle comprises of two isothermal and two ___________________ processes?


aIsobaric


bPolytropic


cIsentropic


dNone of these


View Answer None of these

Moist air is cooled along the line of constant ________________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs ?


aEnthalpy


bRelative humidity


cWet bulb temperature


dDew point temperature


View Answer Dew point temperature

Alloy powder manufactured by the following process have spherical shapes ?


aElectrochemical deposition


bGaseous reduction


cAtomisation


dMechanical attrition


View Answer Atomisation

Glycerine is used as a coolant in cooling of some engines instead of water, because___________________?


aIts higher boiling point (290°C) increases its heat carrying capacity


bComparatively less weight of coolant is required


cSmaller radiator can be used


dAll a, b & c


View Answer All a, b & c

The product (s) of roasting of a sulphide ore is (are) ?


aOxide only


bSulphate only


cOxide and sulphate


dDependent on temperature and partial pressure of oxygen & sulphur dioxide


View Answer Oxide only

A jig is used while __________________ a hole?


aBoring


bCounter boring


cDrilling


dEnlarging


View Answer Drilling

The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is___________________?


aFull annealing


bBright annealing


cPatenting


dNone of these


View Answer Patenting

Gantt charts are used for streamlining the__________________?


aInventory control


bProduction schedule


cSales forecasting


dQuality control


View Answer Production schedule

Thermodynamic cycle involved in the working of a thermal power plant is the ______________ cycle ?


aJoule


bCarnot


cRankine


dBrayton


View Answer Rankine

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