Steam Boilers, Engines, Nozzles and Turbines
In water tube boilers

Water passes through the tubes which are surrounded by flames and hot gases
Forced circulation takes place
The flames and hot gases pass through the tubes which are surrounded by water
None of these

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Steam Boilers, Engines, Nozzles and Turbines
Which is not correct statement about effect of sulphur in fuel?

It erodes furnace walls
It has heating value
It helps in electrostatic precipitation of ash in flue gases
It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low

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Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine

The pressure and temperature of steam remains constant
The steam is expanded from a high pressure to a condenser pressure in one or more nozzles
The steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades
The expansion of steam takes place partly in the fixed blades and partly in the moving blades

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