Steam Boilers, Engines, Nozzles and Turbines
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase

Decreases
Remains unchanged
Increases/decreases depending on steam temperature requirements
Increases

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Steam Boilers, Engines, Nozzles and Turbines
A nozzle is said to be a divergent nozzle

None of these
When the cross-section of the nozzle increases continuously from entrance to exit
When the cross-section of the nozzle first decreases from entrance to throat and then increases from its throat to exit
When the cross-section of the nozzle decreases continuously from entrance to exit

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