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Steam Boilers, Engines, Nozzles and Turbines

Steam Boilers, Engines, Nozzles and Turbines
Which of the following is a water tube boiler?

Babcock and Wilcox boiler
Lancashire boiler
Cochran boiler
Locomotive boiler

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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

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

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Steam Boilers, Engines, Nozzles and Turbines
The selection of type and size of a steam boiler depends upon

The fuel and water available
The geographical position of the power house
The power required and working pressure
All of these

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Steam Boilers, Engines, Nozzles and Turbines
The condition of steam in boiler drum is always

Dry
Supersaturated
Saturated
Wet

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Steam Boilers, Engines, Nozzles and Turbines
Proximate analysis of fuel is determination of percentage of

Carbon, hydrogen, nitrogen, sulphur, moisture
Lower calorific value
Fixed carbon, ash, volatile matter, moisture
Higher calorific value

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

6 cm
12 cm
2 cm
8 cm

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