MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
The decrease in the atomic number is not observed in case of __________ |
| A. | alpha emission |
| B. | beta emission |
| C. | gamma emission |
| D. | none of the mentioned |
| Answer» C. gamma emission | |
| 2. |
Combustion of pulverised coal as compared to that of lump coal __________ |
| A. | develops a non-luminous flame |
| B. | can be done with less excess air |
| C. | develops a low temperature flame |
| D. | provides a lower rate of heat release |
| Answer» C. develops a low temperature flame | |
| 3. |
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the __________ |
| A. | requirement of large volume of combustion chamber |
| B. | incomplete combustion of coal |
| C. | risk of explosion |
| D. | chances of clinker formation |
| Answer» D. chances of clinker formation | |
| 4. |
The decrease in the atomic number is not observed in case o? |
| A. | alpha emission |
| B. | beta emission |
| C. | gamma emission |
| D. | none of the mentioned |
| Answer» C. gamma emission | |
| 5. |
Which of the following is not a by-product recovered in a high temperature coal carbonisation plant? |
| A. | Benzol |
| B. | Ethylene |
| C. | Pitch-cresosote mixture (PCM) |
| D. | Naphthalene |
| Answer» C. Pitch-cresosote mixture (PCM) | |
| 6. |
The temperature at which plastic layer formation takes place during carbonisation of coal varies from __________ °C.$ |
| A. | 100-150 |
| B. | 350-450 |
| C. | 700-850 |
| D. | 550-650 |
| Answer» C. 700-850 | |
| 7. |
Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the |
| A. | requirement of large volume of combustion chamber |
| B. | incomplete combustion of coal |
| C. | risk of explosion |
| D. | chances of clinker formation |
| Answer» D. chances of clinker formation | |