31) The fire tubes in a Scotch marine boiler are

horizontal

vertical

inclined

none of these

Answer is:

horizontal

Agree

Disagree

Answer is:

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

Answer is:

internally fired boiler

externally fired boiler

natural circulation boiler

forced circulation boiler

Answer is:

to blow off steam when the pressure of steam inside the boiler exceeds the working pressure

to indicate the water level inside the boiler to an observer

to measure pressure of steam inside the steam boiler

none of the above

Answer is: