MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Thermal Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Feed check valve is used to empty the boiler when it is required to be cleaned. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Where is feed check valve mounted? |
| A. | On top of the boiler shell |
| B. | At the bottom of the boiler shell |
| C. | Above the water level to be maintained |
| D. | Slightly below the water level to be maintained |
| Answer» E. | |
| 3. |
Which of the following statement about stop valve (or junction valve) is FALSE? |
| A. | It regulates the flow of steam |
| B. | Fitted at top of the boiler |
| C. | It connects boiler with the steam pipe |
| D. | The smaller sized valve is called junction valve |
| Answer» E. | |
| 4. |
Which of the following statements about feed check valve is FALSE? |
| A. | It controls the flow of water |
| B. | It only allows flow of water in one direction |
| C. | It is fitted on top of the boiler shell |
| D. | It consists of check valve which automatically moves up and down under pressure of water |
| Answer» D. It consists of check valve which automatically moves up and down under pressure of water | |
| 5. |
The part of the feed check valve which moves up and down automatically under the pressure of water on its gun metal seat is called _____ |
| A. | Check valve |
| B. | Fusible plug |
| C. | Flange |
| D. | Safety valve |
| Answer» B. Fusible plug | |
| 6. |
What is the function of a feed check valve? |
| A. | It regulates the flow of hot gases from the fire-box |
| B. | It controls the flow of air to the combustion chamber |
| C. | It controls the supply of steam outside the boiler |
| D. | It controls the supply of water to boiler |
| Answer» E. | |
| 7. |
In a fusible plug, the substance that melts when it comes in contact with the steam is called _____ |
| A. | Melt |
| B. | Meting wax |
| C. | Fusible metal |
| D. | Fusible wax |
| Answer» D. Fusible wax | |
| 8. |
Which of the following statements about blow-off cock is FALSE? |
| A. | It is used to discharge the mud that has settled at the bottom |
| B. | It is used to empty the boiler for cleaning |
| C. | Scale and sediments are also removed when the blow-off cock is opened |
| D. | It is used to fill the boiler with water |
| Answer» E. | |
| 9. |
In fusible plug, the fusible metal is protected from fire by flange on the hollow gun metal plug. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following statements about fusible plug is FALSE? |
| A. | It extinguishes fire when water level is low |
| B. | It protects the boiler from overheating |
| C. | It should have a very high melting point |
| D. | It needs to be renewed after a period of time |
| Answer» D. It needs to be renewed after a period of time | |
| 11. |
What is the function of fusible plug? |
| A. | Protects the boiler from overheating |
| B. | Prevents mixing of water and steam |
| C. | Regulated the flow of steam outside boiler |
| D. | It is opened to increase the flow of air for combustion |
| Answer» B. Prevents mixing of water and steam | |