The water tubes in a Babcock and Wilcox boiler are

More Questions from Steam Boilers and Engines

• In a compound steam engine, the temperature range per cylinder is reduced, with corresponding reduction in the condensation.
• When the expansion of steam is carried out in a single cylinder and then exhausted into the atmosphere or a condenser, the engine is said to be a simple steam engine.
• The function of a superheater is to heat the feed water by utilising the heat in the exhaust flue gases before leaving through the chimney.
• The high steam and low water safety valve is used to blow off steam when the
• Willian's law holds good for throttle-governed engine, but not for cut-off governed engine.
• Willian's line follows the law (where b = A constant representing the shape of the Willian's line, a = Another constant i.e. no load consumption per hour, I.P. = Indicated power, and m = Steam consumption per hour)
• The water tube boilers produce steam at a __________ pressure than that of fire tube boilers.
• For the same diameter and thickness of tube, a water tube boiler has __________ heating surface as compared to fire tube boiler.
• The missing quantity is mainly due to cylinder condensation and a small amount of steam leakage past the valves and piston.
• A single ended Scotch marine steam boiler may have one to four furnaces which enter from front end of the boiler.

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