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Furnace technology
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent. 85 [other wrong options] [Discuss in forum] |
| Q2 ⇒ In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ? Regenerator [other wrong options] [Discuss in forum] |
| Q3 ⇒ Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an salt bath furnace. [other wrong options] [Discuss in forum] |
| Q4 ⇒ In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by radiation [other wrong options] [Discuss in forum] |
| Q5 ⇒ Air filtration in a furnace reduces its thermal efficiency. [other wrong options] [Discuss in forum] |
| Q6 ⇒ Flue gas outlet temperature from the chimney of any furnace should be ideally about __________ °C. 150 [other wrong options] [Discuss in forum] |
| Q7 ⇒ In salt bath furnace, heat is transferred to the charge mainly by conduction [other wrong options] [Discuss in forum] |
| Q8 ⇒ Artificial draught produced by a fan in the furnace can be controlled by the all (a), (b) and (c). [other wrong options] [Discuss in forum] |
| Q9 ⇒ An example of recuperative furnace is the soaking pit [other wrong options] [Discuss in forum] |
| Q10 ⇒ In a furnace operation, which is not preheated ? Both (a) and (b). [other wrong options] [Discuss in forum] |
| Q11 ⇒ A refractory wall separating the stock and the source of heat is provided in a muffle furnace [other wrong options] [Discuss in forum] |
| Q12 ⇒ In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the all (a), (b) and (c) [other wrong options] [Discuss in forum] |
| Q13 ⇒ Which furnace employs preheating, heating and soaking zones ? Reheating furnace [other wrong options] [Discuss in forum] |
| Q14 ⇒ Which of the following is the most suitable for preheating combustion air above 650°C ? Ceramic recuperator [other wrong options] [Discuss in forum] |
| Q15 ⇒ Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by all (a), (b) & (c). [other wrong options] [Discuss in forum] |
| Q16 ⇒ Pulverised fuel fired furnaces employ __________ fuel firing. all (a), (b) and (c) [other wrong options] [Discuss in forum] |
| Q17 ⇒ Power required in case of forced draught as compared to induced draught (for the same draught produced) is less [other wrong options] [Discuss in forum] |
| Q18 ⇒ Which of the following accentuates clinker-ing troubles on furnace grate burning coal? All (a), (b) and (c). [other wrong options] [Discuss in forum] |
| Q19 ⇒ Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a carbon resistance furnace. [other wrong options] [Discuss in forum] |
| Q20 ⇒ Rotary kilns are used in the both (a) and (b). [other wrong options] [Discuss in forum] |
| Or |