MCQOPTIONS
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MCQOPTIONS
This section includes 11 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 flow work is the displacement work done by the fluid and is given by |
| A. | -pvdm |
| B. | pvdm |
| C. | pvdm or -pvdm depending on whether it is inlet or exit |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 2. |
THE_FLOW_WORK_IS_THE_DISPLACEMENT_WORK_DONE_BY_THE_FLUID_AND_IS_GIVEN_BY?$ |
| A. | -pvdm |
| B. | pvdm |
| C. | pvdm or -pvdm depending on whether it is inlet or exit |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 3. |
What are the different kinds of external work? |
| A. | shear work |
| B. | electrical work |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
When more than one fluid stream enters or leaves the control volume, which type of balance is taken? |
| A. | mass balance |
| B. | energy balance |
| C. | mass balance and energy balance |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
The steady flow energy equation is applied to which of the following processes? |
| A. | pipe line flows |
| B. | heat transfer processes |
| C. | combustion processes |
| D. | all of the mentioned |
| Answer» E. | |
| 6. |
In the differential form, the SFEE becomes |
| A. | dQ+dW=dh+VdV+gdZ |
| B. | dQ-dW=dh+VdV+gdZ |
| C. | dQ+dW=dh-VdV-gdZ |
| D. | dQ-dW=dh-VdV+gdZ |
| Answer» C. dQ+dW=dh-VdV-gdZ | |
| 7. |
When more than one fluid stream is in a control volume, which of the following is more convenient? |
| A. | energy flow per unit time |
| B. | energy flow per unit mass |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» B. energy flow per unit mass | |
| 8. |
Which of the following represents the steady flow energy equation? |
| A. | Q+Wx=(h2-h1)-(V2-V1)(V2+V1)/2+g(Z2-Z1) |
| B. | Q+Wx=(h2-h1)+(V2-V1)(V2+V1)/2+g(Z2-Z1) |
| C. | Q-Wx=(h2-h1)-(V2-V1)(V2+V1)/2+g(Z2-Z1) |
| D. | Q-Wx=(h2-h1)+(V2-V1)(V2+V1)/2+g(Z2-Z1) |
| Answer» E. | |
| 9. |
The total rate of flow of all energy streams entering the control volume must equal to that of leaving the control volume. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 10. |
In a flow process, the work transfer may be of which type? |
| A. | external work |
| B. | flow work |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 11. |
Equation of continuity comes from |
| A. | conservation of energy |
| B. | conservation of mass |
| C. | conservation of work |
| D. | conservation of heat |
| Answer» C. conservation of work | |