Advanced Furnace Technology MCQ Test - Set 02 - ObjectiveBooks

Advanced Furnace Technology MCQ Test - Set 02

Practice Test: Question Set - 02


1. Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace?
    (A) Increase in calorific value of the fuel
    (B) Increase in flame temperature
    (C) Reduction in scale losses
    (D) Saving in fuel consumption

2. Which of the following is a batch furnace?

    (A) Cupola
    (B) Reheating furnace
    (C) Glass tank furnace
    (D) None of these

3. The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent.
    (A) 50
    (B) 65
    (C) 85
    (D) 99

4. Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace?
    (A) Economiser
    (B) Regenerator
    (C) Ceramic recuperator
    (D) Waste heat boiler

5. Which of the following is not a recuperative furnace?

    (A) Soaking pit
    (B) Reheating furnace
    (C) Steam boiler
    (D) Coke oven

6. Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an
    (A) Economiser
    (B) Steam superheater
    (C) Air preheater
    (D) All (a), (b) and (c)

7. An example of shaft furnace is the
    (A) L.D. converter
    (B) Glass melting tank
    (C) Blast furnace
    (D) Soaking pit

8. Use of pulverised coal in boilers provides
    (A) Higher calorific value
    (B) Better combustion
    (C) Smokeless burning
    (D) Less erosion on furnace wall

9. In salt bath furnace, heat is transferred to the charge mainly by
    (A) Conduction
    (B) Convection
    (C) Radiation
    (D) None of these

10. Example of an indirectly heated furnace is
    (A) Hood annealing furnace
    (B) Muffle furnace
    (C) Both (a) and (b)
    (D) Neither (a) nor (b)

11. The heating capacity of muffle furnace depends on the
    (A) Surface area & emissivity of the stock
    (B) Properties of the muffle wall (temperature, area, and emissivity)
    (C) Both (a) & (b)
    (D) Neither (a) nor (b)

12. In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of
    (A) Transportation of coal
    (B) Drying of coal
    (C) Combustion of coal by supplying it around the burner
    (D) Preheating the primary air

13. Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.
    (A) 250
    (B) 650
    (C) 850
    (D) 1000

14. Which of the following is a directly fired intermittent furnace?
    (A) Walking beam reheating furnace
    (B) Reverberatory furnace
    (C) Tower furnace
    (D) Tunnel kiln

15. Furnace aerodynamics is related to the __________ in the furnace.
    (A) Movement of gases
    (B) Measurement of flue gas volume
    (C) Temperature control
    (D) Pressure adjustment

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