Chemical Engineering MCQs

Page No. 30

Ceramic recuperators compared to metallic recuperators for the same duty_________________?


aAre lighter


bOccupy more space


cAre less costly


dHave higher pressure differential between flue gas & air side


View Answer Occupy more space

Regenerators compared to the recuperators for the same duty__________________?


aOccupy more space


bAre less costly


cAre of smaller size


dAll A., B. and C.


View Answer Occupy more space

Combustion of fuel in a furnace with oxygen enriched air results in higher__________________?


aFlue gas volume


bFlame temperature


cFuel consumption


dStack loss


View Answer Flame temperature

Which is not a hearth furnace ?


aGlass tank furnace


bOpen hearth furnace


cCupola


dReheating furnace


View Answer Cupola

Turn down ratio of a burner____________________?


aShould be as low as possible i.e., 1 : 2


bShould be 1:1 for a batch type furnace


cIs the ratio of maximum to minimum permissible heat input rates


dIs normally much more for a continuous furnace as compared to a batch furnace



Main gas valve in a gaseous fuel burner is a ______________ valve?


aGate


bButterfly


cGlobe


dNone of these


View Answer Gate

Pulverised fuel fired furnaces employ ______________ fuel firing?


aHorizontal


bVertical


cTangential


dAll A., B. and C.


View Answer All A., B. and C.

Which of the following is a periodic furnace ?


aTunnel kiln


bRotary kiln


cSoaking pit


dReheating furnace


View Answer Soaking pit

Furnace aerodynamics is related to the _____________ in the furnace?


aMovement of gases


bMeasurement of flue gas volume


cTemperature control


dPressure adjustment


View Answer Movement of gases

The heating capacity of muffle furnace depends on the_________________?


aSurface area & emissivity of the stock


bProperties of the muffle wall (temperature, area, and emissivity)


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

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