The factor of evaporation for all boilers is always

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Less than unity

Greater than unity

None of these

Equal to unity

Less than unity

Greater than unity

None of these

Equal to unity

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Steam Boilers, Engines, Nozzles and Turbines
The steam leaves the nozzle at a

High pressure and a low velocity

Low pressure and a low velocity

High pressure and a high velocity

Low pressure and a high velocity

High pressure and a low velocity

Low pressure and a low velocity

High pressure and a high velocity

Low pressure and a high velocity

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Steam Boilers, Engines, Nozzles and Turbines
Spontaneous combustion is a phenomenon in which

All the fuel burns instantaneously producing high energy release

Explosion in furnace

Coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal

Fuel burns with less air

All the fuel burns instantaneously producing high energy release

Explosion in furnace

Coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal

Fuel burns with less air

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Steam Boilers, Engines, Nozzles and Turbines
In regenerative air preheaters, the heat is transferred

From a metal wall from one medium to another

By direct mixing

Heat is transferred by bleeding some gas from furnace

From heating an intermediate material and then heating the air from this material

From a metal wall from one medium to another

By direct mixing

Heat is transferred by bleeding some gas from furnace

From heating an intermediate material and then heating the air from this material

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Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are

Externally fired

Internally as well as externally fired

None of these

Internally fired

Externally fired

Internally as well as externally fired

None of these

Internally fired

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Steam Boilers, Engines, Nozzles and Turbines
In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is

0.5

0.4

0.25

0.8

0.5

0.4

0.25

0.8

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines The factor of evaporation for all boilers is always

Steam Boilers, Engines, Nozzles and Turbines The steam leaves the nozzle at a

Steam Boilers, Engines, Nozzles and Turbines Spontaneous combustion is a phenomenon in which

Steam Boilers, Engines, Nozzles and Turbines In regenerative air preheaters, the heat is transferred

Steam Boilers, Engines, Nozzles and Turbines Fire tube boilers are

Steam Boilers, Engines, Nozzles and Turbines In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is

Steam Boilers, Engines, Nozzles and Turbines
The factor of evaporation for all boilers is always

Steam Boilers, Engines, Nozzles and Turbines
The steam leaves the nozzle at a

Steam Boilers, Engines, Nozzles and Turbines
Spontaneous combustion is a phenomenon in which

Steam Boilers, Engines, Nozzles and Turbines
In regenerative air preheaters, the heat is transferred

Steam Boilers, Engines, Nozzles and Turbines
Fire tube boilers are

Steam Boilers, Engines, Nozzles and Turbines
In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts. and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is