1 m

1.5 m

2 m

2.5 m

horizontal

vertical

inclined

none of these

Agree

Disagree

the ratio of heat actually used in producing the steam to the heat liberated in the furnace

the amount of water evaporated or steam produced in kg per kg of fuel burnt

the amount of water evaporated from and at 100 Degree Centigrade into dry and saturated steam

the evaporation of 15.653 kg of water per hour from and at 100? C

internally fired boiler

externally fired boiler

natural circulation boiler

forced circulation boiler