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 of the following fuel utilized Burner for combustion? a. Gaseous Fuel b. Pulverized Coal c. Liquid Fuel d. All of the above 2 / 20 2. Which Chemical reaction result in to highest release of Heat out of Following : a. H2+ (1/2) O2 = H2O……… ……….. Per kg of Hydrogen b. 2C +O2= 2CO……… ……….. Per kg of Carbon c. S + O2 = SO2……… ……….. Per kg of Sulphur d. C+ O2 = CO2 ……… ……….. Per kg of Carbon 3 / 20 3. Which Fuel Contain Highest Moisture (%) a. Lignite b. Bituminous c. Subbituminous d. Anthracite 4 / 20 4. Radiation Heat transfer is directly proportion to temperature difference (Supplying & Receiving Surface) in the power of …………… a. T^4 b. T^5.67 c. T^1 d. T^1.25 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. To Control Sox Level ,Which APCD (Air Pollution Control Device) is required to install. a. CFD b. FGD c. MFT d. Catalystic Convertor 7 / 20 7. Heat Transferred in Boiler , Inside combustor is utilize through which of the following mode of heat transfer? a. All of the above b. Convection Mode c. Radiation Mode d. Conduction Mode 8 / 20 8. Clinker Formation is Dependent on which of the following property a. Hardgrove Index b. Flash Point c. Ash Fusion Temperature d. Ash Diffusion Temp 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. CO2 c. SO2 d. H2O 10 / 20 10. Which Type of Coal is having Highest Gross Calorific Value? a. Brown coal b. Bituminous c. Subbituminous d. Lignite 11 / 20 11. In an ideal gas mixture, all the gases are ideal gases and they obey this equation of state given by a. pV=RTt b. pM=VRT c. pV = MRT d. pVM=RT 12 / 20 12. Lignite Contain _____ to _____ % Fixed Carbon a. 60-72% b. 95-98% c. 90%-95% d. 30-40% 13 / 20 13. The most commonly used combustion system (Fuel Firing) in India for the thermal power plant boiler is the _______________ Combustion system. a. Fluidized bed b. Circulating fluidized bed c. Travelling grate stoker firing d. Pulverized fuel 14 / 20 14. 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. 92 d. 44 15 / 20 15. 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. 128 c. 44 d. 88 16 / 20 16. Which gas not generate out of combustion ? a. NO2 b. SiO2 c. CO2 d. SO2 17 / 20 17. Higher the mesh size lower the size of particle that can pass through it ? a. False b. True 18 / 20 18. On heating of pulverized coal sample in presence of air, Which entrapped thing inside the coal losses at 100-120 Deg Cel…………. a. Ethane b. Methane c. Moisture d. Methane & Ethane 19 / 20 19. What is Purpose of Excess air…….. (Select most relevant answer) a. Not At all required in practical condition b. To ensure complete combustion c. To dilute average temp of Flue gas d. To create turbulence 20 / 20 20. What is 3T (TTT) , which is very important in Combustion context a. Time , Temperature & Trash b. Temperature , Turbulence & Temperature c. Time , Temperature &Titration d. Time , Temperature & Turbulence Your score is
