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Chemical Engineering

Furnace Technology MCQs

Practice Furnace Technology MCQs for competitive exams.

Furnace Technology MCQs

Practice questions from this topic.

Specific heating capacity of a furnace is expressed as

  1. A. Weight heated/hr
  2. B. Weight heated/furnace volume
  3. C. Weight heated/hr/furnace volume
  4. D. None of these
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To reduce the stack loss, heat recovery from flue gas can be done by

  1. A. Preheating of cold stock
  2. B. Preheating of combustion air
  3. C. Steam generation in waste heat boilers
  4. D. All of the above
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Which of the following is a directly fired intermittant furnace?

  1. A. Walking beam reheating furnace
  2. B. Reverberatory furnace
  3. C. Tower furnace
  4. D. Tunnel kiln
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Furnace pressure is normally controlled by regulating the

  1. A. Air pressure
  2. B. Fuel gas pressure
  3. C. Speed of I.D. fan
  4. D. Damper
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Thermal efficiency of an open hearth furnace may be about __________ percent.

  1. A. 5
  2. B. 20
  3. C. 50
  4. D. 80
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Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent.

  1. A. 10-15
  2. B. 25-30
  3. C. 45-50
  4. D. 65-70
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Maximum thermal efficiency of boiler may be about __________ percent.

  1. A. 10
  2. B. 25
  3. C. 65
  4. D. 90
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Thermal efficiency of blast furnace stoves used for heating blast (air) may be about __________ percent.

  1. A. 20
  2. B. 40
  3. C. 60
  4. D. 80
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The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about __________ percent.

  1. A. 15
  2. B. 40
  3. C. 70
  4. D. 85
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An example of shaft furnace is the

  1. A. L.D. converter
  2. B. Glass melting tank
  3. C. Blast furnace
  4. D. Soaking pit
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In producer gas making furnace, steam is added along with air to mainly control the

  1. A. Fusion of coal ash & clinker formation
  2. B. C. V. of producer gas
  3. C. Temperature of producer gas
  4. D. Tar content in producer gas
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Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an

  1. A. Economiser
  2. B. Steam superheater
  3. C. Air preheater
  4. D. All of the above
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