Furnace Technology Quiz 3

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Furnace Technology Quiz 3

1 / 34

Which of the following is a periodic furnace ?

2 / 34

Which of the following is the most suitable for preheating combustion air above 650?C ?

3 / 34

Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace ?

4 / 34

Waste heat from the outgoing flue gases in a thermal power plant is recovered by a/an__________?

5 / 34

Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace ?

6 / 34

To reduce the stack loss, heat recovery from flue gas can be done by_______?

7 / 34

Which of the following is a heat treatment furnace ?

8 / 34

Which of the following is not a directly fired furnace ?

9 / 34

Turn down ratio of a burner______?

10 / 34

Which furnace employs preheating, heating and soaking zones ?

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Which of the following is a batch furnace ?

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Which of the following is not an additive for flue gases from furnace to reduce its dewpoint ?

13 / 34

Which is not a hearth furnace ?

14 / 34

Which of the following furnaces will have maximum thermal efficiency ?

15 / 34

Which is not accomplished in an underfired furnace ?

16 / 34

Turndown ratio of a burner gives an idea of the _______ in the furnace?

17 / 34

Which of the following is not a recuperative furnace ?

18 / 34

Thickness of stock does not affect the fuel economy of furnaces, if the material to be heated is of___________?

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Which is a continuous furnace ?

20 / 34

Use of pulverised coal in boilers provides______?

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Which is a regenerative furnace ?

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Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing ?

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While the fuel fired furnace can be used upto a maximum temperature of about 1700?C, the electric furnace can be used upto a temperature of about ______ ?C?

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Unit of furnace loading is______?

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Which one is not an induced draught furnace ?

26 / 34

Which of the following accentuates clinkering troubles on furnace grate burning coal ?

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Which furnace employs an I.D. fan for the removal of flue gases from the furnace ?

28 / 34

Which of the following is a directly fired intermittent furnace ?

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Which one shows the diagrammatic heat balance in a furnace ?

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Which is the most thermally efficient furnace _________?

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Thermal efficiency of furnaces can be improved by______?

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Which of the following variables does not affect the furnace capacity ?

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Very high pressure boilers are usually ______ boilers?

34 / 34

Which of the following variables affects the furnace capacity ?

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