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)

88.25H/T1

T1 /176.5H

176.5H/T1

T1 /88.25H

88.25H/T1

T1 /176.5H

176.5H/T1

T1 /88.25H

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Steam Boilers, Engines, Nozzles and Turbines
Parson's turbine is a

Simple impulse turbine

Simple reaction turbine

None of these

Impulse-reaction turbine

Simple impulse turbine

Simple reaction turbine

None of these

Impulse-reaction turbine

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Steam Boilers, Engines, Nozzles and Turbines
In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

160/3 m/s

640/3 m/s

640 m/s

320/3 m/s

160/3 m/s

640/3 m/s

640 m/s

320/3 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The amount of water evaporated in kg per kg of fuel burnt is called

Evaporative capacity of a boiler

None of these

Equivalent evaporation from and at 100° C

Boiler efficiency

Evaporative capacity of a boiler

None of these

Equivalent evaporation from and at 100° C

Boiler efficiency

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Steam Boilers, Engines, Nozzles and Turbines
The natural draught is produced by

Centrifugal fan

Both (A) and (B)

Chimney

Steam jet

Centrifugal fan

Both (A) and (B)

Chimney

Steam jet

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Steam Boilers, Engines, Nozzles and Turbines
On Millier chart, the constant pressure lines

Diverge from right to left

Diverge from left to right

First rise up and then fall

Are equally spaced throughout

Diverge from right to left

Diverge from left to right

First rise up and then fall

Are equally spaced throughout

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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 Parson's turbine is a

Steam Boilers, Engines, Nozzles and Turbines In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

Steam Boilers, Engines, Nozzles and Turbines The amount of water evaporated in kg per kg of fuel burnt is called

Steam Boilers, Engines, Nozzles and Turbines The natural draught is produced by

Steam Boilers, Engines, Nozzles and Turbines On Millier chart, the constant pressure lines

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
Parson's turbine is a

Steam Boilers, Engines, Nozzles and Turbines
In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

Steam Boilers, Engines, Nozzles and Turbines
The amount of water evaporated in kg per kg of fuel burnt is called

Steam Boilers, Engines, Nozzles and Turbines
The natural draught is produced by

Steam Boilers, Engines, Nozzles and Turbines
On Millier chart, the constant pressure lines