Green coal, in order to be burnt, must be

Steam Boilers, Engines, Nozzles and Turbines
Green coal, in order to be burnt, must be

Burnt in excess air

Heated sufficiently

Burnt as powder

Heated to its ignition point

Burnt in excess air

Heated sufficiently

Burnt as powder

Heated to its ignition point

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

Nozzle efficiency

Boiler efficiency

Condenser efficiency

Vacuum efficiency

Nozzle efficiency

Boiler efficiency

Condenser efficiency

Vacuum efficiency

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Steam Boilers, Engines, Nozzles and Turbines
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

m = a + b × I.P.

I.P. = b × m + a

m = (b/I.P.) - a

I.P. = a × m + b

m = a + b × I.P.

I.P. = b × m + a

m = (b/I.P.) - a

I.P. = a × m + b

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Steam Boilers, Engines, Nozzles and Turbines
The function of a piston in a steam engine is

To transfer motion from the piston to the cross-head

To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment

To guide motion of the piston rod and to prevent it from bending

None of these

To transfer motion from the piston to the cross-head

To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment

To guide motion of the piston rod and to prevent it from bending

None of these

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Steam Boilers, Engines, Nozzles and Turbines
In natural circulation type boiler,

Water is converted into steam in one. Pass without any recirculation

Feed pump is employed to supplement natural circulation in water wall type furnace

Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum

Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam

Water is converted into steam in one. Pass without any recirculation

Feed pump is employed to supplement natural circulation in water wall type furnace

Heating takes place at bottom and the water supplied at bottom gets converted into the mixture of steam bubbles and hot water which rise to drum

Water is supplied in drum and through down comers located in atmospheric condition it passes to the water wall and rises to drum in the form of mixture of water and steam

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Steam Boilers, Engines, Nozzles and Turbines
An economiser is installed in a boiler primarily to

Superheat the steam

Reduce fuel consumption

Increase steam pressure

All of the listed here

Superheat the steam

Reduce fuel consumption

Increase steam pressure

All of the listed here

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines Green coal, in order to be burnt, must be

Steam Boilers, Engines, Nozzles and Turbines The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

Steam Boilers, Engines, Nozzles and Turbines Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

Steam Boilers, Engines, Nozzles and Turbines The function of a piston in a steam engine is

Steam Boilers, Engines, Nozzles and Turbines In natural circulation type boiler,

Steam Boilers, Engines, Nozzles and Turbines An economiser is installed in a boiler primarily to

Steam Boilers, Engines, Nozzles and Turbines
Green coal, in order to be burnt, must be

Steam Boilers, Engines, Nozzles and Turbines
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called

Steam Boilers, Engines, Nozzles and Turbines
Willian’s line follows the law (where b = A constant representing the shape of the Willian’s line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)

Steam Boilers, Engines, Nozzles and Turbines
The function of a piston in a steam engine is

Steam Boilers, Engines, Nozzles and Turbines
In natural circulation type boiler,

Steam Boilers, Engines, Nozzles and Turbines
An economiser is installed in a boiler primarily to