Which one of the following statements is not correct?

examrobotsa's picture
Q: 69 (NDA-II/2015)

Which one of the following statements is not correct?

question_subject: 

Science

question_exam: 

NDA-II

stats: 

0,6,15,9,0,6,6

keywords: 

{'steady flow': [0, 0, 0, 1], 'streamlined flow': [0, 0, 0, 1], 'liquid particles': [0, 0, 0, 1], 'streamlines': [0, 0, 0, 1], 'velocity': [0, 2, 2, 6], 'liquid': [0, 0, 0, 1], 'same path': [0, 0, 0, 1], 'particle': [0, 2, 8, 30], 'previous particle': [0, 0, 0, 1]}

The provided question asks which statement is not correct. Let`s dissect each option for a better understanding.

Option 1 states that in a steady flow of a liquid, the velocity of liquid particles reaching a particular point is the same at all points. This statement is correct and aligns with the principles of steady flow, where the velocity remains constant at any given point.

Option 2 states that steady flow is also called streamlined flow. This statement is correct. Steady flow is synonymous with streamlined flow, where the flow lines are smooth and there is no turbulence.

Option 3 states that in steady flow, each particle may not follow the same path as taken by a previous particle passing through that point. This statement is incorrect. In steady flow, each particle follows the same path as a previous particle passing through that point. This is because steady flow implies a constant velocity and a consistent flow pattern.

Option 4 states that two streamlines cannot intersect each other. This statement is correct. Streamlines are imaginary lines that represent the path of fluid particles. In steady flow, streamlines cannot cross each other as it would imply particles moving in multiple directions at a single point, which contradicts the principles of steady flow.

In summary, option 3 is not correct as it states that

Practice this on app