JSW_boilerCombustion_Post JSW_Boiler Combustion_ILT_Post Assessment JSW_Boiler Combustion_ILT_Post Assessment The number of attempts remaining is 2 1 / 20 1. Higher the mesh size lower the size of particle that can pass through it ? a. False b. True 2 / 20 2. The most commonly used combustion system (Fuel Firing) in India for the thermal power plant boiler is the _______________ Combustion system. a. Travelling grate stoker firing b. Pulverized fuel c. Fluidized bed d. Circulating fluidized bed 3 / 20 3. Clinker Formation is Dependent on which of the following property a. Ash Fusion Temperature b. Flash Point c. Hardgrove Index d. Ash Diffusion Temp 4 / 20 4. 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. 128 b. 64 c. 44 d. 88 5 / 20 5. Heat Transferred in Boiler , Inside combustor is utilize through which of the following mode of heat transfer? a. All of the above b. Radiation Mode c. Convection Mode d. Conduction Mode 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. 92 b. 63 c. 44 d. 64 7 / 20 7. Which Type of Coal is having Highest Gross Calorific Value? a. Lignite b. Brown coal c. Bituminous d. Subbituminous 8 / 20 8. Which Fuel Contain Highest Moisture (%) a. Anthracite b. Lignite c. Bituminous d. Subbituminous 9 / 20 9. Which of the following fuel utilized Burner for combustion? a. Gaseous Fuel b. Liquid Fuel c. Pulverized Coal d. All of the above 10 / 20 10. 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 11 / 20 11. On heating of pulverized coal sample in presence of air, Which entrapped thing inside the coal losses at 100-120 Deg Cel…………. a. Methane & Ethane b. Methane c. Moisture d. Ethane 12 / 20 12. 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 13 / 20 13. Higher the Combustion efficiency, Lower will be the Overall Heat rate keeping other parameter constant. a. True b. False 14 / 20 14. 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 15 / 20 15. What is Purpose of Excess air…….. (Select most relevant answer) a. To create turbulence b. To ensure complete combustion c. To dilute average temp of Flue gas d. Not At all required in practical condition 16 / 20 16. Radiation Heat transfer is directly proportion to temperature difference (Supplying & Receiving Surface) in the power of …………… a. T^1 b. T^5.67 c. T^1.25 d. T^4 17 / 20 17. To Control Sox Level ,Which APCD (Air Pollution Control Device) is required to install. a. MFT b. Catalystic Convertor c. CFD d. FGD 18 / 20 18. Lignite Contain _____ to _____ % Fixed Carbon a. 60-72% b. 95-98% c. 90%-95% d. 30-40% 19 / 20 19. Which Chemical reaction result in to highest release of Heat out of Following : a. C+ O2 = CO2 ……… ……….. Per kg of Carbon b. 2C +O2= 2CO……… ……….. Per kg of Carbon c. H2+ (1/2) O2 = H2O……… ……….. Per kg of Hydrogen d. S + O2 = SO2……… ……….. Per kg of Sulphur 20 / 20 20. Which gas not generate out of combustion ? a. SO2 b. SiO2 c. NO2 d. CO2 Your score is
