Which is the equation used to find chimney diameter?

D = 5.48 ( sqrt{ frac{ g V}{Mg}} )

D = 1.128 ( sqrt{ frac{Mg}{ g V}} )

D = 5.48 ( sqrt{ frac{ g V}{Mg}} )

D = 5.48 ( sqrt{ frac{Mg}{ g V}} )

D = 1.128 ( sqrt{ frac{ g V}{Mg}} )

Explore topic-wise MCQs in Energy Engineering.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Energy Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.	A 15kg of air is supplied per kg of fuel burnt to the combustion chamber of a boiler using fuel 600kg/hr. the temperature of flue gases and ambient air are 273 C and 32 C. If the minimum draught required to start the flue is 9.5mm of water, find out the minimum height of the chimney?
A.	22.66m
B.	23.84m
C.	24.52m
D.	25.16m
Answer» B. 23.84m

Discussion

2.	Determine the height of the chimney to get net draught of 12mm if the total losses are 4mm. the temperature of air is 25^oC and the temperature of chimney gases is 300^oC. The mass of air used per kg of fuel used is 18kg. One kg of air occupies a volume of 0.7734m³ at normal temperature?
A.	26.84
B.	20.22
C.	29.93
D.	18.09
Answer» D. 18.09

Discussion

3.	The flue gases of natural draught are at higher temperature when compared to flue gases in artificial gas.
A.	True
B.	False
Answer» B. False

Discussion

4.	Determine the height of the chimney to produce a static draught of 22mm of water if the mean flue gas temperature in chimney is 290^oC and ambient temperature in boiler house is 20^oC. The gas constant for air is 29.26Kgm/Kgk and for chimney flue gas is 26.2 Kgfm/Kgk. Assume reading as 760mm of mercury?
A.	38.42m
B.	42.55m
C.	45.84m
D.	44.03m
Answer» C. 45.84m

Discussion

5.	Which is the equation used to find chimney diameter?
A.	D = 1.128 ( sqrt{ frac{Mg}{ g V}} )
B.	D = 5.48 ( sqrt{ frac{ g V}{Mg}} )
C.	D = 5.48 ( sqrt{ frac{Mg}{ g V}} )
D.	D = 1.128 ( sqrt{ frac{ g V}{Mg}} )
Answer» B. D = 5.48 ( sqrt{ frac{ g V}{Mg}} )

Discussion

6.	Which is the net pressure equation used to find chimney height?
A.	P = H (W<sub>a</sub>-W<sub>g</sub>)
B.	P = H (W<sub>a</sub>+W<sub>g</sub>)
C.	P = H (W<sub>g</sub>-W<sub>a</sub>)
D.	P = H ( ( frac{W_a}{W_g} ))
Answer» B. P = H (W<sub>a</sub>+W<sub>g</sub>)

Discussion

Explore topic-wise MCQs in Energy Engineering.

A 15kg of air is supplied per kg of fuel burnt to the combustion chamber of a boiler using fuel 600kg/hr. the temperature of flue gases and ambient air are 273 C and 32 C. If the minimum draught required to start the flue is 9.5mm of water, find out the minimum height of the chimney?

Determine the height of the chimney to get net draught of 12mm if the total losses are 4mm. the temperature of air is 25oC and the temperature of chimney gases is 300oC. The mass of air used per kg of fuel used is 18kg. One kg of air occupies a volume of 0.7734m3 at normal temperature?

The flue gases of natural draught are at higher temperature when compared to flue gases in artificial gas.

Which is the equation used to find chimney diameter?

Which is the net pressure equation used to find chimney height?

Determine the height of the chimney to get net draught of 12mm if the total losses are 4mm. the temperature of air is 25^oC and the temperature of chimney gases is 300^oC. The mass of air used per kg of fuel used is 18kg. One kg of air occupies a volume of 0.7734m³ at normal temperature?