MCQOPTIONS
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MCQOPTIONS
This section includes 19 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. |
Which gases are vented out of the deaerator? |
| A. | Oxygen only |
| B. | Carbon dioxide only |
| C. | Oxygen & Carbon dioxide |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 2. |
Why is the deaerator placement in the feedwater system so important? |
| A. | to maximise pressure difference between the condenser & the boiler |
| B. | to minimise pressure difference between the condenser & the boiler |
| C. | to make the pressure difference between the condenser & the boiler Zero |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
Where is the deaerator placed in the feedwater system? |
| A. | in the beginning |
| B. | in the middle |
| C. | at the end |
| D. | there is no deaerator in the feedwater system |
| Answer» C. at the end | |
| 4. |
The chemical injected into the feedwater at the suction of the boiler feed pump is? |
| A. | Sodium Sulphide |
| B. | Sodium Sulphate |
| C. | Sodium Sulphite |
| D. | Sodium Hydride |
| Answer» D. Sodium Hydride | |
| 5. |
WHERE_IS_THE_DEAERATOR_PLACED_IN_THE_FEEDWATER_SYSTEM??$ |
| A. | in the beginning |
| B. | in the middle |
| C. | at the end |
| D. | there is no deaerator in the feedwater system |
| Answer» C. at the end | |
| 6. |
Which gases are vented out of the deaerator?$ |
| A. | Oxygen only |
| B. | Carbon dioxide only |
| C. | Oxygen & Carbon dioxide both |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 7. |
Why_is_the_deaerator_placement_in_the_feedwater_system_so_important?$ |
| A. | to maximise pressure difference between the condenser & the boiler |
| B. | to minimise pressure difference between the condenser & the boiler |
| C. | to make the pressure difference between the condenser & the boiler Zero |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 8. |
Which among the following goes to the Vent Condenser along with Oxygen & Carbon dioxide? |
| A. | Sodium sulphite |
| B. | Carbon monoxide |
| C. | Water vapour |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Why is the deaerator not employed in water cooled & moderated nuclear power plant? |
| A. | due to radioactivity release in degeneration |
| B. | due to emissivity of degeneration |
| C. | due to reheating |
| D. | due to regeneration |
| Answer» B. due to emissivity of degeneration | |
| 10. |
The output of the boiler heat pump is to? |
| A. | the high pressure heater |
| B. | the low pressure heater |
| C. | simultaneously to the low & high pressure heaters |
| D. | none of the mentioned |
| Answer» B. the low pressure heater | |
| 11. |
Net positive suction head(NPSH) is provided because? |
| A. | to prevent vapour lock |
| B. | to prevent cavitation |
| C. | to prevent friction |
| D. | none of the mentioned |
| Answer» C. to prevent friction | |
| 12. |
Name another chemical apart from Sodium Sulphite which is into the feedwater at the suction of the boiler feed pump? |
| A. | Calcium peroxide |
| B. | Hydroxide |
| C. | Hydrazine |
| D. | Oxymes |
| Answer» D. Oxymes | |
| 13. |
Why is Sodium Sulphite added into the feedwater at the suction of the boiler feed pump? |
| A. | to maximise the effect of dissolved gases |
| B. | to minimise the effect of dissolved gases |
| C. | to increase feedwater concentration |
| D. | none of the mentioned |
| Answer» C. to increase feedwater concentration | |
| 14. |
The chemical injected into the feedwater at the suction of the boiler feed pump is ? |
| A. | Sodium Sulphide |
| B. | Sodium Sulphate |
| C. | Sodium Sulphite |
| D. | Sodium Hydride |
| Answer» D. Sodium Hydride | |
| 15. |
What kind of steam comes through the other side of the feedwater spray? |
| A. | pure steam |
| B. | bled steam |
| C. | saturated steam |
| D. | superheated steam |
| Answer» C. saturated steam | |
| 16. |
The heat exchanger after passing through which, the feedwater is sprayed from the top is called? |
| A. | Vent condenser |
| B. | Vent evaporator |
| C. | Vent economiser |
| D. | Vent heater |
| Answer» B. Vent evaporator | |
| 17. |
In the deaerator, the feedwater is heated to the saturation temperature by the steam extracted from? |
| A. | compressor |
| B. | turbine |
| C. | pump |
| D. | none of the mentioned |
| Answer» C. pump | |
| 18. |
What is the solubility of dissolved gases at boiling or saturation temperature? |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 19. |
Which of the following type heater is known as deaerator? |
| A. | Contact-type open heater |
| B. | Contact-type closed heater |
| C. | Closed heater |
| D. | None of the mentioned |
| Answer» B. Contact-type closed heater | |