Furnace Technology Objective Questons & Answers - 1

Question: 1

Use of pulverised coal in boilers provides

(A) Better combustion

(B) Smokeless burning

(C) Higher calorific value

(D) Less erosion on furnace wall

Question: 2

The electric furnace in which heat is produced by a combination of induced current and skin effect is called the _____ furnace.

(A) Low frequency induction

(B) High frequency induction

(C) Resistance

(D) Arc

Question: 3

In a furnace, high emissivity coatings are most effective on

(A) Furnace charge

(B) Burner nozzle

(C) Inner surface of furnace

(D) Outer surface of furnace

Question: 4

Maximum thermal efficiency of boilers occurs at about

(A) Two third of full load

(B) Half of full load

(C) Full load

(D) 25% of full load

Question: 5

Furnace aerodynamics is related to _____ in the furnace.

(A) Pressure adjustment

(B) Temperature control

(C) Measurement of flue gas volume

(D) Movement of gases