A. Controlling the excess air
B. Oxygen enrichment of combustion air
C. Using low c.v. fuels
D. Maintaining proper draft in the furnace
Related Mcqs:
- Stack (chimney) height in a big thermal power plant is dictated by the___________________?
A. Pollution control aspect
B. Draught to be created
C. Limitation of constructional facilities
D. None of these - Naphthalene is removed from coke oven gas by________________?
A. Scrubbing with wash oil (a petroleum product)
B. Adsorbing on bog iron bed
C. Absorbing in vetro-coke solution
D. None of these - Higher efficiency in the combustion of solid fuel cannot be achieved by________________?
A. Proper fuel preparation
B. Keeping the flue gas exhaust temperature very high
C. Adopting efficient-fuel firing technique & equipment
D. Supplying correct quantity of combustion air - Flue gas from the heating chamber of by product coke ovens is removed by________________?
A. Forced draft fan
B. Induced draft fan
C. Steam ejector
D. Natural draft - Which of the following has the highest heat of combustion ?
A. H2
B. CO
C. CH4
D. C2H6 - ‘Fuel’ can be defined as a substance which produces heat by___________________?
A. Combustion
B. Nuclear fission
C. Nuclear fusion
D. All A., B. & C. - The heat of combustion of a fuel___________________?
A. Is equal to the heat of formation
B. Is always negative
C. Can’t be known without calculating it
D. Is always positive - If the specific heat of gaseous products of combustion of a fuel is high, the abiabatic flame temperature will be_____________?
A. Low
B. High
C. Very high, if the fuel is of low calorific value
D. None of these - Net calorific value is the gross calorific value less the _______________ heat of water in the product of combustion when cooled to 15°C ?
A. Sensible
B. Latent
C. Sensible and latent
D. None of these - A fuel with high heat release rate will_________________?
A. Require smaller combustion chamber
B. Have high calorific value
C. Have high adiabatic flame temperature
D. None of these
