The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

T1 /176.5H

88.25H/T1

T1 /88.25H

176.5H/T1

T1 /176.5H

88.25H/T1

T1 /88.25H

176.5H/T1

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Steam Boilers, Engines, Nozzles and Turbines
By compounding the expansion of steam in two or more cylinders, the length of stroke

None of these

Decreases

Does not change

Increases

None of these

Decreases

Does not change

Increases

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Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

18 MN/m²

180 MN/m²

0.18 MN/m²

1.8 MN/m²

18 MN/m²

180 MN/m²

0.18 MN/m²

1.8 MN/m²

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Steam Boilers, Engines, Nozzles and Turbines
In designing air preheaters, the important design consideration is that

Approach temperature should be as low as possible

Handling and maintenance should be easier

Stack gases should not be cooled to the dew point

Heat transfer area should be optimum

Approach temperature should be as low as possible

Handling and maintenance should be easier

Stack gases should not be cooled to the dew point

Heat transfer area should be optimum

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially dry saturated steam is

0.582

0.546

0.601

0.577

0.582

0.546

0.601

0.577

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of internal flue tubes of a Lancashire boiler is about ___ that of its shell.

One-fourth

One-third

Two-fifth

One-half

One-fourth

One-third

Two-fifth

One-half

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines By compounding the expansion of steam in two or more cylinders, the length of stroke

Steam Boilers, Engines, Nozzles and Turbines The maximum steam pressure in a Locomotive boiler is limited to

Steam Boilers, Engines, Nozzles and Turbines In designing air preheaters, the important design consideration is that

Steam Boilers, Engines, Nozzles and Turbines The critical pressure ratio for initially dry saturated steam is

Steam Boilers, Engines, Nozzles and Turbines The diameter of internal flue tubes of a Lancashire boiler is about ___ that of its shell.

Steam Boilers, Engines, Nozzles and Turbines
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height of the chimney in meters, and T1 = Absolute temperature of air outside the chimney in K)

Steam Boilers, Engines, Nozzles and Turbines
By compounding the expansion of steam in two or more cylinders, the length of stroke

Steam Boilers, Engines, Nozzles and Turbines
The maximum steam pressure in a Locomotive boiler is limited to

Steam Boilers, Engines, Nozzles and Turbines
In designing air preheaters, the important design consideration is that

Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially dry saturated steam is

Steam Boilers, Engines, Nozzles and Turbines
The diameter of internal flue tubes of a Lancashire boiler is about ___ that of its shell.