MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Heat rate is given by (in kJ/kWh) |
| A. | cycle efficiency |
| B. | 3600 / cycle efficiency |
| C. | cycle efficiency / 3600 |
| D. | cycle efficiency * 3600 |
| Answer» C. cycle efficiency / 3600 | |
| 2. |
Steam rate is the rate of steam flow required to produce unit shaft output. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 3. |
The work ratio is defined as the ratio of |
| A. | positive work output to net work output |
| B. | net work output to positive work output |
| C. | heat input to work output |
| D. | none of the mentioned |
| Answer» C. heat input to work output | |
| 4. |
The liquid water handled by pump is |
| A. | incompressible |
| B. | with increase in pressure, there is a little change in density or specific volume |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
THE_WORK_RATIO_IS_DEFINED_AS_THE_RATIO_OF?$ |
| A. | positive work output to net work output |
| B. | net work output to positive work output |
| C. | heat input to work output |
| D. | none of the mentioned |
| Answer» C. heat input to work output | |
| 6. |
Heat rate is given by (in kJ/kWh)$ |
| A. | cycle efficiency |
| B. | 3600 / cycle efficiency |
| C. | cycle efficiency / 3600 |
| D. | cycle efficiency * 3600 |
| Answer» C. cycle efficiency / 3600 | |
| 7. |
Steam rate is the rate of steam flow required to produce unit shaft output.$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 8. |
Work output of turbine is ____ the work input to the pump. |
| A. | much larger |
| B. | much smaller |
| C. | equal to |
| D. | none of the mentioned |
| Answer» B. much smaller | |
| 9. |
The liquid water handled by pump i? |
| A. | incompressible |
| B. | with increase in pressure, there is a little change in density or specific volume |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 10. |
For a Rankine cycle, which of the following is true? |
| A. | a reversible constant pressure heating process happens in steam boiler |
| B. | reversible adiabatic expansion of steam in turbine |
| C. | reversible constant pressure heat rejection in condenser |
| D. | all of the mentioned |
| Answer» E. | |
| 11. |
In a Rankine cycle, all the processes are ideal. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 12. |
For a vapour power cycle, |
| A. | net heat input is converted into net work output |
| B. | Q1-Q2 = Wt-Wp |
| C. | efficiency = 1 – (Q2/Q1) |
| D. | all of the mentioned |
| Answer» E. | |
| 13. |
For a fluid undergoing cycle process, |
| A. | there is no net change in its internal energy |
| B. | energy transfer as heat is equal to the energy transfer as work |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 14. |
The path followed in a vapour power cycle is |
| A. | boiler-condenser-turbine-pump |
| B. | boiler-turbine-condenser-pump |
| C. | boiler-turbine-pump-condenser |
| D. | boiler-pump-turbine-condenser |
| Answer» C. boiler-turbine-pump-condenser | |
| 15. |
In the vapour power cycle, working fluid undergoes a change of phase. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 16. |
A power cycle continuously converts ____ into ____ |
| A. | heat, heat |
| B. | work, heat |
| C. | heat, work |
| D. | work, work |
| Answer» D. work, work | |