Steam Boilers and Engines Questions

• A receiver type compound engine, requires a lighter flywheel.
• The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called
• The high steam and low water safety valve is not used in
• A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
• The actual power generated in the engine cylinder is called
• The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and at 100° C.
• The length of Cornish boiler varies from
• An economiser is generally placed between
• The amount of water evaporated from and at 100° C into dry and saturated steam is called evaporative capacity of a boiler.
• The function of a piston in a steam engine is
• There is about 15 to 20% of coal saving when an economiser is used in a boiler.
• The difference between the atmospheric pressure and the absolute pressure is known as vacuum in a condenser.
• Which of the following is correct? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)
• In surface condensers, the condensate and the cooling water mixes up.
• The principal function of a stop valve is to
• In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is
• A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
• A valve installed between the boiler and the feed pump is
• The draught in locomotive boilers is produced by a
• The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as