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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Vacuum for reciprocating steam engines compared to steam turbines is

Equal
More
Could be more or less depending on the size of plant
Less

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Steam Boilers, Engines, Nozzles and Turbines
Fusible plug for boilers is made of fusible metal containing tin, lead, and

Copper
Aluminium
Nickel
Bismuth

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Steam Boilers, Engines, Nozzles and Turbines
With increase in load, convection superheater has

Rising characteristic
Drooping characteristic
Flat characteristic
Linear characteristic

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Steam Boilers, Engines, Nozzles and Turbines
A single acting steam engine produces ___ power than that of double acting steam engine.

Half
Equal
Four times
Double

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of a cylindrical shell of a Scotch marine boiler varies from

None of these
1.5 to 2 m
3.5 to 4.5 m
2.5 to 3.5 m

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Steam Boilers, Engines, Nozzles and Turbines
The shell of the Cochran boiler is made hemispherical

Both (A) and (B)
To give maximum space and strength
To withstand the pressure of steam inside the boiler
None of these

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