MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Hydraulic Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Properties that do not affect a draft tube is _______ |
| A. | Pressure |
| B. | Temperature |
| C. | Pressure velocity |
| D. | Velocity |
| Answer» C. Pressure velocity | |
| 2. |
The exit diameter for a simple elbow draft tube should be________ |
| A. | Large |
| B. | Small |
| C. | Very small |
| D. | Same |
| Answer» B. Small | |
| 3. |
Turbine that consists of draft tubes is called as__________ |
| A. | Impulse turbine |
| B. | Curtis turbine |
| C. | Rateau turbine |
| D. | Reaction turbine |
| Answer» E. | |
| 4. |
WHICH_OF_THE_FOLLOWING_IS_A_50_PERCENT_REACTION_TURBINE??$ |
| A. | Parsons turbine |
| B. | Curtis turbine |
| C. | Rateau turbine |
| D. | Pelton wheel |
| Answer» B. Curtis turbine | |
| 5. |
The exit diameter for a simple elbow draft tube should be________$ |
| A. | Large |
| B. | Small |
| C. | Very small |
| D. | Same |
| Answer» B. Small | |
| 6. |
The_simple_elbow_draft_tube_helps_to_cut_down_the_cost_of_excavation.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
The horizontal portion of the draft tube is usually bent to prevent entry of air from the exit end. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the efficiency of the simple elbow type draft tube? |
| A. | 10 |
| B. | 30 |
| C. | 60 |
| D. | 90 |
| Answer» D. 90 | |
| 9. |
The other name for elbow with varying cross section tube is called_____ |
| A. | Pressure tube |
| B. | Bent draft tube |
| C. | Velocity tube |
| D. | Sink tube |
| Answer» C. Velocity tube | |
| 10. |
Properties_that_do_not_affect_a_draft_tube_is________ |
| A. | Pressure |
| B. | Temperature |
| C. | Pressure velocity |
| D. | Velocity |
| Answer» C. Pressure velocity | |
| 11. |
Turbine that consists of draft tubes is called as_________? |
| A. | Impulse turbine |
| B. | Curtis turbine |
| C. | Rateau turbine |
| D. | Reaction turbine |
| Answer» E. | |
| 12. |
The simple elbow draft tube is placed close to the_______ |
| A. | Head race |
| B. | Tail race |
| C. | Tank |
| D. | Nozzle |
| Answer» C. Tank | |
| 13. |
What is the maximum value of efficiency in a draft tube? |
| A. | 100 |
| B. | 50 |
| C. | 90 |
| D. | 40 |
| Answer» D. 40 | |
| 14. |
What is the purpose of a Draft tube? |
| A. | To prevent flow separation |
| B. | To avoid Pressure drag |
| C. | To prevent rejection of heat |
| D. | To increase efficiency |
| Answer» B. To avoid Pressure drag | |
| 15. |
Draft tube consists of conical diffuser with angles of______ |
| A. | 10 deg |
| B. | 20 deg |
| C. | 30 deg |
| D. | 40 deg |
| Answer» B. 20 deg | |
| 16. |
Most common application of the draft tube is ______ |
| A. | Rotor |
| B. | Motor |
| C. | Pump |
| D. | Filter |
| Answer» D. Filter | |
| 17. |
A draft tube helps in converting kinetic energy into________ |
| A. | Electrical work |
| B. | Mechanical work |
| C. | Chemical work |
| D. | Thermal work |
| Answer» C. Chemical work | |
| 18. |
Draft tube is also called_______ |
| A. | Straight divergent tube |
| B. | Simple elbow tube |
| C. | Thermal tube |
| D. | Elbow tube with varying cross section |
| Answer» B. Simple elbow tube | |