1. In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by
2. Dampers are located
3. Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing ?
4. Which furnace employs natural draft ?
5. Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent
6. Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a
7. Which of the following is a directly fired intermittant furnace ?
8. Which of the following is a periodic furnace?
9. In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the
10. Which of the following furnaces will have maximum thermal efficiency ?
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