Steam Boilers and Engines Questions

• The average operating pressure of Benson boiler is
• A draught produced by a chimney due to the difference of densities between the hot gases inside the chimney and cold atmospheric air outside it, is called natural draught.
• The aim of a compound steam engine is
• Loeffler boiler is a water tube boiler using a forced circulation of water.
• The function of a crosshead is to guide motion of the __________ and to prevent it from bending.
• The function of a piston rod is
• The length of shell of a Locomotive boiler is
• Which of the following statement is correct?
• The effect of wire drawing is to decrease the area of indicator diagram and thus work done by the engine is reduced.
• In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.
• The governing of steam engines keep the engine speed constant according to the changing load conditions
• Lancashire boiler is
• A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is knwon as
• The efficiency of the plant __________ with the mechanical draught.
• The evaporative capacity of a boiler is defined as the evaporation of 15.653 kg of water per hour from and at 100° C.
• The chimney draught varies with
• The ratio of the __________ to the volume at cut-off is called expansion ratio.
• In water tube boilers, the water passes through the tubes which are surrounded by flames and hot gases.
• The maximum heat loss is a boiler occurs due to
• A Tandem type compound engine requires a larger flywheel.