Furnace Technology MCQ Questons and Answers - 1

Question: 1

Which of the following furnaces will have maximum thermal efficiency?

(A) Rotary kilns

(B) Boiler furnace

(C) Walking beam reheating furnace

(D) Soaking pits

Question: 2

High percentage of carbon monoxide presence in the flue gas of boiler is an indicator of

(A) Complete combustion

(B) Good control of pollutants

(C) High excess air

(D) Low excess air

Question: 3

Tunnel kilns are usually used for the

(A) Melting of glass

(B) Reheating of steel slabs

(C) Roasting of pyrites

(D) Drying of refractories

Question: 4

Which of the following absorbs maximum heat in a high pressure boiler?

(A) Air preheater

(B) Furnace water wall

(C) Economiser

(D) Steam superheater

Question: 5

Furnace pressure is normally controlled by regulating the

(A) Damper

(B) Speed of I.D. fan

(C) Fuel gas pressure

(D) Air pressure