MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Steam Turbines Question and Answers Efficiencies knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the typical efficiency of the nozzle? |
| A. | 0.45-0.56 |
| B. | 0.9-0.99 |
| C. | 0.5-0.7 |
| D. | 0.67-0.86 |
| Answer» C. 0.5-0.7 | |
| 2. |
Nozzle efficiency can be defined by __________ |
| A. | ratio of kinetic energy of the steam leaving the nozzle to the potential energy available with the steam while entering |
| B. | pressure of the steam leaving the nozzle to pressure of the steam entering the nozzle |
| C. | temperature of the steam leaving the nozzle to the temperature of the steam entering the nozzle |
| D. | none of the mentioned |
| Answer» B. pressure of the steam leaving the nozzle to pressure of the steam entering the nozzle | |
| 3. |
Flue gases _______ efficiency. |
| A. | decreases |
| B. | increases |
| C. | does not effect |
| D. | none of the mentioned |
| Answer» C. does not effect | |
| 4. |
What does fluid to fuel efficiency mean? |
| A. | It indicates the overall efficiency of the boiler |
| B. | Indicates fuel efficiency |
| C. | Overall efficiency excluding boiler efficiency |
| D. | None of the mentioned |
| Answer» B. Indicates fuel efficiency | |
| 5. |
What does combustion efficiency mean? |
| A. | Boiler ability to burn the fuel to fuel that is not burned and amount of air present at exit |
| B. | Calorific value that can be obtained by burning a fuel |
| C. | Energy that is released when fuel is burned |
| D. | None of the mentioned |
| Answer» B. Calorific value that can be obtained by burning a fuel | |
| 6. |
What does aerodynamic efficiency mean? |
| A. | Energy that can be extracted from a given volume of steam at given temperature and pressure |
| B. | Amount of steam turbine blade can allow to flow inside |
| C. | Amount of energy contained in steam |
| D. | None of the mentioned |
| Answer» B. Amount of steam turbine blade can allow to flow inside | |
| 7. |
What does thermodynamic efficiency of steam turbine mean? |
| A. | Ratio of power developed to the power that can be developed by ideal turbine |
| B. | Ratio of power that can be developed by ideal turbine to the power developed by the actual turbine |
| C. | Ratio of inlet temperature to outlet temperature |
| D. | None of the mentioned |
| Answer» B. Ratio of power that can be developed by ideal turbine to the power developed by the actual turbine | |