Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part7 : 6 to 10
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.Pulverized fuel is used for |
| better burning |
| more calorific value |
| less radiation loss |
| medium sized units |
| stoker fired boilers. |
7.Sulphur in coal results in |
| causing clinkering and slagging |
| corroding air heaters |
| spontaneous combustion during coal storage |
| facilitating ash precipitation |
| all of the above. |
8.Pour point of fuel oil is the |
| lowest temperature at which oil will flow under set condition |
| storage temperature |
| temperature at which fuel is pumped through burners |
| temperature at which oil is transported |
| none of the above. |
9.Calorific value of coal is of the order of |
| 200-400 kcal/kg |
| 800-1200 kcal/kg |
| 2000-4000 kcal/kg |
| 5000-8000 kcal/kg |
| 8000-10,000 kcal/kg. |
10.Tertiary air is the air used to |
| provide air around burners for obtaining optimum combustion |
| transport and dry the coal |
| cool the scanners |
| supply air for seigniors |
| convert CO (formed in lower zone of furnace) into C02 at higher zone. |
More Steam Boilers QUESTIONS AND ANSWERS available in next pages
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