MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What can be the maximum diameter of the pipe for the water flow of velocity 1 m/s ( = 10-6) to be laminar in nature? Assume Lower critical Reynolds number to be 2100. |
| A. | 2.1 mm |
| B. | 21 mm |
| C. | 21 cm |
| D. | 0.21 mm |
| Answer» B. 21 mm | |
| 2. |
A circular pipe of radius 7 cm is used for water flow transmission. This pipe is moulded into another pipe with a square cross-section keeping the length same. (Ignore the thickness of the pipe). Calculate the hydraulic diameter of the moulded pipe. (Take = 22/7). |
| A. | 11 cm |
| B. | 7 cm |
| C. | 3.5 cm |
| D. | 22 cm |
| Answer» B. 7 cm | |
| 3. |
When a problem states The velocity of the water flow in a pipe is 20 m/s , which of the following velocities is it talking about? |
| A. | RMS velocity |
| B. | Average velocity |
| C. | Absolute velocity |
| D. | Relative velocity |
| Answer» C. Absolute velocity | |