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MCQs

Total Questions : 757 | Page 75 of 76 pages
Question 741. Large tonnage of refractory bricks are dried in a_____________________?
  1.    Shaft furnace
  2.    Rotary hearth furnace
  3.    Tunnel kiln
  4.    Muffle furnace
 Discuss Question
Answer: Option C. -> Tunnel kiln
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 742. If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an ______________ furnace?
  1.    Sidefired
  2.    Underfired
  3.    Covered
  4.    Recirculating
 Discuss Question
Answer: Option B. -> Underfired
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 743. Turndown ratio of a burner gives an idea of the ______________ in the furnace?
  1.    Range of fuel firing rates
  2.    Volume of the combustion chamber
  3.    Maximum heat input rate only
  4.    Minimum heat input rate only
 Discuss Question
Answer: Option A. -> Range of fuel firing rates
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 744. A refractory wall separating the stock and the source of heat is provided in a__________________?
  1.    Updraft kiln
  2.    Muffle furnace
  3.    Continuous furnace
  4.    None of these
 Discuss Question
Answer: Option B. -> Muffle furnace
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 745. Which one shows the diagrammatic heat balance in a furnace ?
  1.    Sankey diagram
  2.    Cox chart
  3.    Ostwald chart
  4.    None of these
 Discuss Question
Answer: Option A. -> Sankey diagram
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 746. _____________ atmosphere is maintained inside an iron blast furnace?
  1.    Oxidising
  2.    Reducing
  3.    Inert
  4.    Decarburising
 Discuss Question
Answer: Option B. -> Reducing
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 747. Which is a continuous furnace ?
  1.    Coke ovens
  2.    Annealing furnace
  3.    Glass tank furnace
  4.    None of these
 Discuss Question
Answer: Option C. -> Glass tank furnace
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 748. Overfire burning in a furnace is a phenomenon characterised by____________________?
  1.    Supply of excess fuel
  2.    Supply of excess air
  3.    Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air
  4.    None of these
 Discuss Question
Answer: Option C. -> Burning carbon monoxide and other incombustible in upper zone of furnace by supplying more air
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 749. Regenerators are normally provided in the____________________?
  1.    Glass melting furnace
  2.    Open hearth furnace
  3.    By product coke ovens
  4.    All A., B. and C.
 Discuss Question
Answer: Option D. -> All A., B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 750. Out of the following fuels used in a furnace exhausting flue gas at a temperature of 600°C, the percentage stack loss will be maximum in case of complete combustion of_________________?
  1.    Furnace oil with air
  2.    Furnace oil with oxygen
  3.    Blast furnace gas with air
  4.    Blast furnace gas with oxygen
 Discuss Question
Answer: Option C. -> Blast furnace gas with air
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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