Fuels and Combustion-Data Intensity 4 | Multiple Questions and Answers

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Fuels and Combustion-Data Intensity 4 Multiple Questions and Answers.

1.	Calorific value of blast furnace gas is around ____ KCal/Nm3?

	A.	850
	B.	1800
	C.	4200
	D.	6500

2.	Which of the following would require least amount of secondary air for combustion ?

	A.	Coke breeze containing 25% ash and 2% volatile matter
	B.	Anthracite containing 10% volatile matter and 8% ash
	C.	Bituminous coal containing 20% ash and 25% volatile matter
	D.	Semi-bituminous coal containing 25% ash and 20% volatile matter

3.	Bulk density of pulverised coal may be about ____ kg/m3?

	A.	100
	B.	500
	C.	1000
	D.	1500

4.	Bunsen burner is an example of a/an ______ burner?

	A.	Inside mixing/premix type
	B.	Submerged combustion
	C.	Rotary cup
	D.	Outside mixing/diffusion flame/nozzle mix type

5.	The main drawback of supplying more excess air in the combustion of fuel is the____?

	A.	Excessive power requirement of air blower
	B.	Excessive power requirement of air blower
	C.	Intermittent and uncontrolled combustion of the fuel
	D.	High exit flue gas temperature from the furnace

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Date to Date Current Affairs 2022

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