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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

188 m/s
79 m/s
450 m/s
900 m/s

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Steam Boilers, Engines, Nozzles and Turbines
The high pressure and low pressure cylinders in a Tandem type compound engine are regarded as having cranks

0° to each other
None of these
90° to each other
180° to each other

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Steam Boilers, Engines, Nozzles and Turbines
The bituminous coal is no caking if its carbon content is

90-95%
85-90%
78-81%
81-85%

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Steam Boilers, Engines, Nozzles and Turbines
The variation of steam pressure in the nozzle depends upon

All of these
Dryness fraction of steam
Velocity of steam
Specific volume of steam

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Steam Boilers, Engines, Nozzles and Turbines
The diameter of fire tubes in Cochran boiler is of the order of

2 cm
8 cm
6 cm
12 cm

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Steam Boilers, Engines, Nozzles and Turbines
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become

Superheated
Wet
Dry
Remain dry saturated

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