Size of boiler tubes is specified by

Steam Boilers, Engines, Nozzles and Turbines
Size of boiler tubes is specified by

Mean diameter and thickness

Outside diameter and thickness

Outside diameter and inside diameter

Inside diameter and thickness

Mean diameter and thickness

Outside diameter and thickness

Outside diameter and inside diameter

Inside diameter and thickness

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Steam Boilers, Engines, Nozzles and Turbines
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

8/3 kg

2 kg

1 kg

4/3 kg

8/3 kg

2 kg

1 kg

4/3 kg

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Steam Boilers, Engines, Nozzles and Turbines
In a nozzle, the effect of super-saturation is to

Decrease specific volume of steam

Increase the entropy

Increase the heat drop

Decrease dryness fraction of steam

Decrease specific volume of steam

Increase the entropy

Increase the heat drop

Decrease dryness fraction of steam

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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
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

Increases

Decreases

Remains constant

None of these

Increases

Decreases

Remains constant

None of these

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Steam Boilers, Engines, Nozzles and Turbines
The ratio of the volume at cut-off to the swept volume is called

None of these

Clearance ratio

Cut-off ratio

Expansion ratio

None of these

Clearance ratio

Cut-off ratio

Expansion ratio

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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines Size of boiler tubes is specified by

Steam Boilers, Engines, Nozzles and Turbines For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

Steam Boilers, Engines, Nozzles and Turbines In a nozzle, the effect of super-saturation is to

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

Steam Boilers, Engines, Nozzles and Turbines The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

Steam Boilers, Engines, Nozzles and Turbines The ratio of the volume at cut-off to the swept volume is called

Steam Boilers, Engines, Nozzles and Turbines
Size of boiler tubes is specified by

Steam Boilers, Engines, Nozzles and Turbines
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

Steam Boilers, Engines, Nozzles and Turbines
In a nozzle, the effect of super-saturation is to

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

Steam Boilers, Engines, Nozzles and Turbines
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

Steam Boilers, Engines, Nozzles and Turbines
The ratio of the volume at cut-off to the swept volume is called