Fuels and Combustion Turndown ratio of a gas burner is equal to the Minimum to maximum heat input ratio Both A & B Maximum to minimum heat input ratio Maximum to minimum permissible gas flow rate Minimum to maximum heat input ratio Both A & B Maximum to minimum heat input ratio Maximum to minimum permissible gas flow rate ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the Chances of clinker formation Incomplete combustion of coal Requirement of large volume combustion chamber Risk of explosion Chances of clinker formation Incomplete combustion of coal Requirement of large volume combustion chamber Risk of explosion ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Dry air requirement for burning 1 Nm³ of CO to CO₂ may be around __________ Nm³. 1.75 0.87 2.4 11.4 1.75 0.87 2.4 11.4 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The heat of combustion of a fuel Is equal to the heat of formation Is always positive Is always negative Can't be known without calculating it Is equal to the heat of formation Is always positive Is always negative Can't be known without calculating it ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Use of pulverised coal in boiler furnace provides Better combustion Smokeless burning Less erosion on furnace walls High calorific value Better combustion Smokeless burning Less erosion on furnace walls High calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction. n. Shift conversion Boudouard Reduction Neumann reversal Shift conversion Boudouard Reduction Neumann reversal ANSWER DOWNLOAD EXAMIANS APP
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