L&T EduTech | JSW | Boiler Combustion and Maintenance | Apr’ 26 | Participant Feedback – Fill out form JSW_Boiler Combustion_ILT_Post Assessment JSW_Boiler Combustion_ILT_Post Assessment The number of attempts remaining is 2 1 / 20 1. Which Chemical reaction result in to highest release of Heat out of Following : a. S + O2 = SO2……… ……….. Per kg of Sulphur b. C+ O2 = CO2 ……… ……….. Per kg of Carbon c. 2C +O2= 2CO……… ……….. Per kg of Carbon d. H2+ (1/2) O2 = H2O……… ……….. Per kg of Hydrogen 2 / 20 2. Heat Transferred in Boiler , Inside combustor is utilize through which of the following mode of heat transfer? a. Convection Mode b. Conduction Mode c. Radiation Mode d. All of the above 3 / 20 3. Radiation Heat transfer is directly proportion to temperature difference (Supplying & Receiving Surface) in the power of …………… a. T^1.25 b. T^4 c. T^5.67 d. T^1 4 / 20 4. Methane's combustion can be represented as follows: CH4 +2O2 = CO2 + 2H2O , 23 kg of CH4 generate How much kg CO2 Stoichiometrically after combustion. (Rounded off) a. 64 b. 63 c. 44 d. 92 5 / 20 5. Higher the Combustion efficiency, Lower will be the Overall Heat rate keeping other parameter constant. a. True b. False 6 / 20 6. The most commonly used combustion system (Fuel Firing) in India for the thermal power plant boiler is the _______________ Combustion system. a. Fluidized bed b. Travelling grate stoker firing c. Circulating fluidized bed d. Pulverized fuel 7 / 20 7. Which of the following fuel utilized Burner for combustion? a. Gaseous Fuel b. All of the above c. Liquid Fuel d. Pulverized Coal 8 / 20 8. Methane's combustion can be represented as follows: CH4 +2O2 = CO2 + 2H2O , 32 kg of CH4 Required How much kg O2 Stoichiometrically after combustion. (Note : Molecular Weight of reaction component Already Provided above can be use) a. 64 b. 88 c. 128 d. 44 9 / 20 9. It is generally observed that, higher the molecular weight higher the Specific heat ,Then which of the following gases have Lowest Specific Heat…. Molecular Weight is as listed Below , H2= 2 kg/Kmole , S = 32 kg/Kmole , O= 16 kg/Kmole , C = 12 kg/Mole a. H2 b. SO2 c. CO2 d. H2O 10 / 20 10. Which Fuel Contain Highest Moisture (%) a. Anthracite b. Subbituminous c. Bituminous d. Lignite 11 / 20 11. Which Type of Coal is having Highest Gross Calorific Value? a. Subbituminous b. Bituminous c. Brown coal d. Lignite 12 / 20 12. What is 3T (TTT) , which is very important in Combustion context a. Time , Temperature & Turbulence b. Time , Temperature & Trash c. Time , Temperature &Titration d. Temperature , Turbulence & Temperature 13 / 20 13. Lignite Contain _____ to _____ % Fixed Carbon a. 95-98% b. 60-72% c. 90%-95% d. 30-40% 14 / 20 14. What is Purpose of Excess air…….. (Select most relevant answer) a. To create turbulence b. Not At all required in practical condition c. To ensure complete combustion d. To dilute average temp of Flue gas 15 / 20 15. Clinker Formation is Dependent on which of the following property a. Flash Point b. Hardgrove Index c. Ash Fusion Temperature d. Ash Diffusion Temp 16 / 20 16. Which gas not generate out of combustion ? a. CO2 b. SO2 c. NO2 d. SiO2 17 / 20 17. On heating of pulverized coal sample in presence of air, Which entrapped thing inside the coal losses at 100-120 Deg Cel…………. a. Moisture b. Ethane c. Methane & Ethane d. Methane 18 / 20 18. In an ideal gas mixture, all the gases are ideal gases and they obey this equation of state given by a. pV=RTt b. pVM=RT c. pM=VRT d. pV = MRT 19 / 20 19. Higher the mesh size lower the size of particle that can pass through it ? a. False b. True 20 / 20 20. To Control Sox Level ,Which APCD (Air Pollution Control Device) is required to install. a. CFD b. FGD c. MFT d. Catalystic Convertor Your score is
