MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Power Plant knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Fuel gases containing hydrocarbons are not preheated before burning, because __________ |
| A. | they crack, thereby choking and fouling heat transfer surface |
| B. | it reduces calorific value tremendously |
| C. | it reduces flame temperature tremendously |
| D. | there are chances of explosion during preheating |
| Answer» B. it reduces calorific value tremendously | |
| 2. |
The difference in total carbon and fixed carbon of coal will be minimum in case of __________ |
| A. | lignite |
| B. | bituminous coal |
| C. | high temperature coke |
| D. | anthracite |
| Answer» D. anthracite | |
| 3. |
Grindability of coal is 100. It implies that __________ |
| A. | it can t be pulverised |
| B. | it is easily pulverised |
| C. | can be pulverised with difficulty |
| D. | power consumption is high in pulverisation |
| Answer» C. can be pulverised with difficulty | |
| 4. |
Fat coal means a coal having __________ |
| A. | high volatile matter |
| B. | low ash content |
| C. | low calorific value |
| D. | non-smoking tendency |
| Answer» B. low ash content | |
| 5. |
Combustion of pulverised coal as compared to lump coal __________ |
| A. | can be done with less excess air |
| B. | develops a low temperature flame |
| C. | develops a non-luminous flames |
| D. | provides a lower rate of heat release |
| Answer» B. develops a low temperature flame | |
| 6. |
Higher percentage of ash in coal meant for the production of metallurgical grade coke __________ |
| A. | causes brittleness in coke |
| B. | increases abrasion resistance of coke |
| C. | decreases hardness of coke |
| D. | causes high toughness |
| Answer» C. decreases hardness of coke | |
| 7. |
Laboratory gas is obtained by cracking of __________ |
| A. | fuel oil |
| B. | gasoline |
| C. | kerosene |
| D. | diesel |
| Answer» D. diesel | |
| 8. |
Improper storage condition results weathering of coal and spontaneous combustion, which increases its? |
| A. | caking index |
| B. | yield of carbonised products |
| C. | calorific value |
| D. | friability and oxygen content |
| Answer» E. | |