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Furnace Technology MCQs

Chemical Engineering Objective Questions

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57. Neutral atmosphere is maintained in a/an __________ furnace.
A. Cold rolled steel coil annealing
B. Open hearth
C. Soaking pit
D. Walking beam reheating
Discussion
58. The method of Lobo and Evans is concerned with the calculation of the
A. Heat absorption in radiant section of a furnace
B. Heat transfer by forced convection in a reboiler
C. Heat transfer in vacuum condensers
D. Mass transfer co-efficient
Discussion
59. Pulverised fuel fired furnaces employ __________ fuel firing.
A. Horizontal
B. Vertical
C. Tangential
D. All of the above
Discussion
60. Combustion of fuel in a furnace with oxygen enriched air results in higher
A. Flue gas volume
B. Flame temperature
C. Fuel consumption
D. Stack loss
Discussion
61. Reverberatory furnace is used for
A. Roasting/reduction of ores
B. Annealing steel coil
C. Heating air
D. Steel melting
Discussion
62. Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing?
A. Ash disposal problem
B. Excessive fly ash discharge from the stack
C. Higher power consumption in its transportation
D. Erosion of induced draft fan blades
Discussion
63. Circulation of gases in furnace is caused by the
A. Change in volume during a change of temperature
B. Difference in density between hot and cold gases
C. Furnace pressure in conjunction with draft in flues
D. All of the above
Discussion

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