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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly

210 kg/h
150 kg/h
340 kg/h
280 kg/h

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Steam Boilers, Engines, Nozzles and Turbines
In a throttling process

Steam pressure remains constant
Steam entropy remains constant
Steam temperature remains constant
Steam enthalpy remains constant

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Steam Boilers, Engines, Nozzles and Turbines
The critical pressure ratio for initially dry saturated steam is

0.601
0.577
0.582
0.546

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Steam Boilers, Engines, Nozzles and Turbines
Which of the following substance will have same percentage in both proximate and ultimate analysis?

Hydrogen
Ash
Volatile matter
Moisture

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Steam Boilers, Engines, Nozzles and Turbines
The expansion of steam in a nozzle follows

Stirling cycle
Joule cycle
Rankine cycle
Carnot cycle

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Steam Boilers, Engines, Nozzles and Turbines
The number of drums in Benson steam generator is

One
No drum
One steam drum and one water drum
Two

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