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Fluid viscosity is responsible for the dissipation of useful energy to low temperature heat which can be considered as "useless" energy or entropy. Which of the following statements about dynamic viscosity μ are correct? (i) μ decreases with increasing temperature in liquid because the vibration energy diminishes the effect of intermolecular attraction. (ii) μ decreases with increasing temperature in gas because the vibration energy diminishes the effect of intermolecular attraction. μ increases with increasing temperature in gas because the random motion of gas molecules increases resulting in more collisions and hence greater resistance to flow. (A) (B) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above Streamline, streakline and pathline are important concepts in the study of fluid motion. Which of the following statements are correct? (i) Flow does not cross a streamline and the flow between 2 streamlines has to satisfy the conservation of mass. Streamline, streakline and pathline are the same in steady flow. Streamline, streakline and pathline are defined at an instant in time. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above

Fluid viscosity is responsible for the dissipation of useful energy to low temperature heat which can be considered as "useless" energy or entropy. Which of the following statements about dynamic viscosity μ are correct? (i) μ decreases with increasing temperature in liquid because the vibration energy diminishes the effect of intermolecular attraction. (ii) μ decreases with increasing temperature in gas because the vibration energy diminishes the effect of intermolecular attraction. μ increases with increasing temperature in gas because the random motion of gas molecules increases resulting in more collisions and hence greater resistance to flow. (A) (B) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above Streamline, streakline and pathline are important concepts in the study of fluid motion. Which of the following statements are correct? (i) Flow does not cross a streamline and the flow between 2 streamlines has to satisfy the conservation of mass. Streamline, streakline and pathline are the same in steady flow. Streamline, streakline and pathline are defined at an instant in time. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Fluid viscosity is responsible for the dissipation of useful energy to low temperature heat which can be considered as "useless" energy or entropy. Which of the following statements about dynamic viscosity μ are correct? (i) μ decreases with increasing temperature in liquid because the vibration energy diminishes the effect of intermolecular attraction. (ii) μ decreases with increasing temperature in gas because the vibration energy diminishes the effect of intermolecular attraction. μ increases with increasing temperature in gas because the random motion of gas molecules increases resulting in more collisions and hence greater resistance to flow. (A) (B) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above Streamline, streakline and pathline are important concepts in the study of fluid motion. Which of the following statements are correct? (i) Flow does not cross a streamline and the flow between 2 streamlines has to satisfy the conservation of mass. Streamline, streakline and pathline are the same in steady flow. Streamline, streakline and pathline are defined at an instant in time. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above
Transcribed Image Text:Fluid viscosity is responsible for the dissipation of useful energy to low temperature heat which can be considered as "useless" energy or entropy. Which of the following statements about dynamic viscosity μ are correct? (i) μ decreases with increasing temperature in liquid because the vibration energy diminishes the effect of intermolecular attraction. (ii) μ decreases with increasing temperature in gas because the vibration energy diminishes the effect of intermolecular attraction. μ increases with increasing temperature in gas because the random motion of gas molecules increases resulting in more collisions and hence greater resistance to flow. (A) (B) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above Streamline, streakline and pathline are important concepts in the study of fluid motion. Which of the following statements are correct? (i) Flow does not cross a streamline and the flow between 2 streamlines has to satisfy the conservation of mass. Streamline, streakline and pathline are the same in steady flow. Streamline, streakline and pathline are defined at an instant in time. (A) (B) (C) (D) (i) and (ii) (i) and (iii) (ii) and (iii) All of the above
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