Furnace Technology Objective Questons & Answers - 2

Question: 6

Use of higher excess air in an oil fired furnace would result in

(A) Reduced flame temperature

(B) Increased heating rate

(C) Increased furnace production rate

(D) Increased furnace temperature

Question: 7

Cement kiln is a

(A) Batch furnace

(B) Natural draft furnace

(C) Tunnel kiln

(D) Rotary kiln

Question: 8

Which furnace employs preheating, heating and soaking zones?

(A) Cupola

(B) Soaking pit

(C) Reheating furnace

(D) Open hearth furnace

Question: 9

Furnace wall heat loss does not depend on the

(A) Thermal conductivity of wall brick

(B) Material of stock to be heated

(C) Velocity of air around the furnace

(D) Temperature of external wall surface

Question: 10

Fuel used in B.F. stove is

(A) Blast furnace gas/mixed gas

(B) Coke oven gas

(C) Furnace oil

(D) Pulverised coal