91. In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by
92. The reason for excessive clinker formation in gas producers is the
93. In a muffle furnace, the muffle
94. Example of an indirectly heated furnace is
95. The advantages of firing pulverised coal in the furnace lies in the fact that, it
96. Tunnel kilns are usually used for
97. Which of the following is not a directly fired furnace?
98. Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a
99. Thermal efficiency of furnaces can be improved by
100. Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the
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