Mechanical Engineering : Steam Boilers QUESTIONS AND ANSWERS :: part7 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.The safety valve on boiler drum compared to safety valve on superheated is set ai |
| same value |
| higher value |
| lower value |
| lower/higher depending on steam flow |
| unpredictable. |
2.The ultimate analysis of fuel lists |
| various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as per-cents by volume |
| various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as per-cents by weight |
| fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash |
| fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash |
| moisture and ash free heating value. |
3.Secondary air is the used to |
| provide air around burners for obtaining optimum combustion |
| transport and dry the coal |
| convert CO (formed in lower zone of furnace) into C02 at higher zone |
| air delivered by induced draft fan |
| air fed to pulverizes. |
4.Which is not correct statement about the function of furnace |
| to provide proper conditions for continuous complete combustion |
| mix fuel with air and ignite |
| separate ash from coal |
| maintain heat supply to prepare and ignite the incoming fuel |
| to minimize radiation losses. |
5.Water and sediment in fuel oil can be removed by |
| heating the oil in the settling tanks |
| cooling the oil in the settling tanks |
| burning the oil |
| suspension |
| filtering. |
More Steam Boilers QUESTIONS AND ANSWERS available in next pages
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