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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
In a Woolf type compound engine, the high pressure and low pressure cylinders

Are set at 90°
Have common piston rod
Are set in V arrangement
Have separate piston rod

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Steam Boilers, Engines, Nozzles and Turbines
O₂ content in atmospheric air on weight basis is

0.3
0.21
0.23
0.4

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Steam Boilers, Engines, Nozzles and Turbines
The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)

sin²α
cos²α
tan²α
cot²α

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Steam Boilers, Engines, Nozzles and Turbines
Locomotive boiler is of the following type

Multi tubular
Horizontal
Internally fired
All of the listed here

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Steam Boilers, Engines, Nozzles and Turbines
The action of steam in a steam turbine is

Neither static nor dynamic
Static
Static and dynamic
Dynamic

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Steam Boilers, Engines, Nozzles and Turbines
The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called

Safety valve
Fusible plug
Water level indicator
Pressure gauge

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