MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The power available from back pressure turbine through which the heating steam flows is very less. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 2. |
The fraction of energy utilized in a by-product power cycle is ____ |
| A. | very high |
| B. | very low |
| C. | zero |
| D. | infinity |
| Answer» B. very low | |
| 3. |
In a by-product power cycle, condenser losses is ____ |
| A. | high |
| B. | low |
| C. | zero |
| D. | infinity |
| Answer» D. infinity | |
| 4. |
THE_POWER_AVAILABLE_FROM_BACK_PRESSURE_TURBINE_THROUGH_WHICH_THE_HEATING_STEAM_FLOWS_IS_VERY_LESS.?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 5. |
THE_FRACTION_OF_ENERGY_UTILIZED_IN_A_BY-PRODUCT_POWER_CYCLE_IS_____?$ |
| A. | very high |
| B. | very low |
| C. | zero |
| D. | infinity |
| Answer» B. very low | |
| 6. |
In a by-product power cycle, condenser losses is ___? |
| A. | high |
| B. | low |
| C. | zero |
| D. | infinity |
| Answer» D. infinity | |
| 7. |
In a by-product power cycle, |
| A. | the basic need is power produced and process steam is a by-product |
| B. | the basic need is process steam and power produced is a by-product |
| C. | both process steam and power is the basic need |
| D. | both process steam and power is a by-product |
| Answer» C. both process steam and power is the basic need | |
| 8. |
A cogeneration plant produces, |
| A. | power |
| B. | process heat |
| C. | both power and process heat |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 9. |
In a back pressure turbine, |
| A. | exhaust steam from turbine is used for process heating |
| B. | the process heater replaces the condenser of Rankine cycle |
| C. | exhaust pressure from turbine is the desired saturation pressure |
| D. | all of the mentioned |
| Answer» E. | |
| 10. |
How can we generate required power and required quantity of steam in a single process? |
| A. | by modifying initial steam pressure |
| B. | by modifying exhaust pressure |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 11. |
By combining two cycles in series, we can get high combined efficiency even if the individual efficiencies are low. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 12. |
For n cycles, overall efficiency would be |
| A. | E = (1-E1)(1-E2)(1-E3)……(1-En) – 1 |
| B. | E = 1 / (1-E1)(1-E2)(1-E3)……(1-En) |
| C. | E = (1-E1)(1-E2)(1-E3)……(1-En) |
| D. | E = 1 – (1-E1)(1-E2)(1-E3)……(1-En) |
| Answer» E. | |
| 13. |
The efficiency of a binary cycle is given by(here E=efficiency) |
| A. | E = (1-E1)(1-E2) |
| B. | E = 1 – (1-E1)(1-E2) |
| C. | E = 1 / (E1-1)(E2-1) |
| D. | none of the mentioned |
| Answer» C. E = 1 / (E1-1)(E2-1) | |