MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering (MCQ) questions and answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following are effects of nozzle friction?1. Enthalpy drop decreases2. Exit velocity reduces3. Decrease in specific volume4. Decrease in mass flow rate |
| A. | (1), (2) and (3) |
| B. | (2), (3) and (4) |
| C. | (1), (3) and (4) |
| D. | (1), (2) and (4) |
| Answer» E. | |
| 2. |
If (V u V u), then machine is called as________. |
| A. | compressor |
| B. | turbine |
| C. | pump |
| D. | all of the above |
| Answer» C. pump | |
| 3. |
The ratio of actual mass flow rate ( ) to ideal mass flow rate ( ) is called as________ |
| A. | nozzle coefficient |
| B. | coefficient of nozzle friction |
| C. | coefficient of discharge |
| D. | coefficient of mass |
| Answer» D. coefficient of mass | |
| 4. |
Which of the following sentences are correct for steam turbine?1. Steam turbine requires large floor area2. Steam turbine is a rotary high speed machine3. Steam turbine has low weight to power ratio4. Steam turbine has more initial cost and mainte ce cost |
| A. | (1) and (2) |
| B. | (2) and (3) |
| C. | (3) and (4) |
| D. | (1) and (4) |
| Answer» C. (3) and (4) | |
| 5. |
What is the effect of increasing flow coefficient ( ) in an axial flow compressor on blade loading coefficient ( )? |
| A. | Blade loading coefficient ( ) increases |
| B. | Blade loading coefficient ( ) decreases |
| C. | Blade loading coefficient ( ) remains constant |
| D. | Unpredictable |
| Answer» C. Blade loading coefficient ( ) remains constant | |
| 6. |
Which compressors are suitable for large volume flow rates of above 1200 m/min |
| A. | Centrifugal compressors |
| B. | Axial flow compressors |
| C. | Both a. and b. |
| D. | None of the above |
| Answer» C. Both a. and b. | |