180) Fire tube boilers are limited to a maximum working pressure of

181) The average value of diagram factor lies between

182) The fittings mounted on the boiler for its proper and safe functioning is a

183) The diameter of superheated tubes in a locomotive boiler is

184) The amount of water evaporated from feed water at __________ into dry and saturated steam at 100 Degree C at normal atmospheric pressure is called equivalent evaporation from and at 100 Degree C.