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. Liquid Fuel c. Pulverized Coal d. All of the above 2 / 20 2. 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. Methane & Ethane d. Moisture 3 / 20 3. Heat Transferred in Boiler , Inside combustor is utilize through which of the following mode of heat transfer? a. Conduction Mode b. Radiation Mode c. All of the above d. Convection Mode 4 / 20 4. The most commonly used combustion system (Fuel Firing) in India for the thermal power plant boiler is the _______________ Combustion system. a. Pulverized fuel b. Circulating fluidized bed c. Travelling grate stoker firing d. Fluidized bed 5 / 20 5. Higher the mesh size lower the size of particle that can pass through it ? a. True b. False 6 / 20 6. 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. 44 b. 92 c. 63 d. 64 7 / 20 7. Which Fuel Contain Highest Moisture (%) a. Anthracite b. Lignite c. Bituminous d. Subbituminous 8 / 20 8. Which gas not generate out of combustion ? a. NO2 b. CO2 c. SO2 d. SiO2 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. H2O b. SO2 c. CO2 d. H2 10 / 20 10. Radiation Heat transfer is directly proportion to temperature difference (Supplying & Receiving Surface) in the power of …………… a. T^1 b. T^1.25 c. T^4 d. T^5.67 11 / 20 11. Lignite Contain _____ to _____ % Fixed Carbon a. 30-40% b. 95-98% c. 90%-95% d. 60-72% 12 / 20 12. Clinker Formation is Dependent on which of the following property a. Ash Diffusion Temp b. Ash Fusion Temperature c. Flash Point d. Hardgrove Index 13 / 20 13. Which Type of Coal is having Highest Gross Calorific Value? a. Bituminous b. Subbituminous c. Lignite d. Brown coal 14 / 20 14. What is Purpose of Excess air…….. (Select most relevant answer) a. To dilute average temp of Flue gas b. To ensure complete combustion c. To create turbulence d. Not At all required in practical condition 15 / 20 15. Higher the Combustion efficiency, Lower will be the Overall Heat rate keeping other parameter constant. a. True b. False 16 / 20 16. What is 3T (TTT) , which is very important in Combustion context a. Time , Temperature &Titration b. Temperature , Turbulence & Temperature c. Time , Temperature & Turbulence d. Time , Temperature & Trash 17 / 20 17. Which Chemical reaction result in to highest release of Heat out of Following : a. C+ O2 = CO2 ……… ……….. Per kg of Carbon b. S + O2 = SO2……… ……….. Per kg of Sulphur c. H2+ (1/2) O2 = H2O……… ……….. Per kg of Hydrogen d. 2C +O2= 2CO……… ……….. Per kg of Carbon 18 / 20 18. In an ideal gas mixture, all the gases are ideal gases and they obey this equation of state given by a. pVM=RT b. pM=VRT c. pV=RTt d. pV = MRT 19 / 20 19. 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. 44 c. 88 d. 128 20 / 20 20. To Control Sox Level ,Which APCD (Air Pollution Control Device) is required to install. a. FGD b. Catalystic Convertor c. MFT d. CFD Your score is
