a. Losses in pipe networks occur due to i, the conversion of mechanical to thermal energy due to viscosity ii. shear stresses caused by separated flows in components i. shear stresses on the walls of the pipe A iv. all of the above b. In a static fluid of constant density 1. it is impossible to tell how the pressure varies without knowing if the fluid is a liquid or a gas ii. pressure varies quadratically with the depth i. pressure varies linearly with the depth iv. pressure is constant c. The continuum model of a fluid is not valid when i. the flow is turbulent ii. the fluid is a gas ii. the specific gravity is high iv. there are very few molecules in a large space, like a rarefied gas. d. Cavitation in a pipe network is most likely to happen i. At a high elevation point as the pressure gets very high i. At a high elevation point as the pressure gets very low iii. At a low elevation point as the pressure gets very low iv. At a low elevation point as the pressure gets very high e. The flow of pollution in a river is being assessed by looking at aerial photos. The still photos show pollutant that is being washed into the river from a single drain. The lines drawn by the pollutant on the photo represent i. streamlines ii. streaklines iii. pathlines iv. timelines 1. Water at 15°C is held in a steel cylindrical tank that is pressurised by pushing down on a piston. The tank has an internal diameter of 20cm and the water is filled to a depth of 50cm. A force of 10°N is then applied to the piston, pushing down on the water. Find The change in pressure in the water due to the additional force • The change in volume of the water under this pressure

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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a. Losses in pipe networks occur due to
i, the conversion of mechanical to thermal energy due to viscosity
il shear stresses caused by separated flows in components
i. shear stresses on the walls of the pipe
iv. all of the above
b. In a static fluid of constant density
i. it is impossible to tell how the pressure varies without knowing if the fluid is a liquid or a gas
ii. pressure varies quadratically with the depth
iii. pressure varies linearly with the depth
iv. pressure is constant
c. The continuum model of a fluid is not valid when
i. the flow is turbulent
ii. the fluid is a gas
ii. the specific gravity is high
iv. there are very few molecules in a large space, like a rarefied gas.
d. Cavitation in a pipe network is most likely to happen
i. At a high elevation point as the pressure gets very high
ii. At a high elevation point as the pressure gets very low
iii. At a low elevation point as the pressure gets very low
iv. At a low elevation point as the pressure gets very high
e. The flow of pollution in a river is being assessed by looking at aerial photos. The still photos show
pollutant that is being washed into the river from a single drain. The lines drawn by the pollutant
on the photo represent
i. streamlines
ii. streaklines
iii. pathlines
iv. timelines
1. Water at 15°C is held in a steel cylindrical tank that is pressurised by pushing down on a piston.
The tank has an internal diameter of 20cm and the water is filled to a depth of 50cm. A force of
10°N is then applied to the piston, pushing down on the water. Find
The change in pressure in the water due to the additional force
• The change in volume of the water under this pressure
Transcribed Image Text:a. Losses in pipe networks occur due to i, the conversion of mechanical to thermal energy due to viscosity il shear stresses caused by separated flows in components i. shear stresses on the walls of the pipe iv. all of the above b. In a static fluid of constant density i. it is impossible to tell how the pressure varies without knowing if the fluid is a liquid or a gas ii. pressure varies quadratically with the depth iii. pressure varies linearly with the depth iv. pressure is constant c. The continuum model of a fluid is not valid when i. the flow is turbulent ii. the fluid is a gas ii. the specific gravity is high iv. there are very few molecules in a large space, like a rarefied gas. d. Cavitation in a pipe network is most likely to happen i. At a high elevation point as the pressure gets very high ii. At a high elevation point as the pressure gets very low iii. At a low elevation point as the pressure gets very low iv. At a low elevation point as the pressure gets very high e. The flow of pollution in a river is being assessed by looking at aerial photos. The still photos show pollutant that is being washed into the river from a single drain. The lines drawn by the pollutant on the photo represent i. streamlines ii. streaklines iii. pathlines iv. timelines 1. Water at 15°C is held in a steel cylindrical tank that is pressurised by pushing down on a piston. The tank has an internal diameter of 20cm and the water is filled to a depth of 50cm. A force of 10°N is then applied to the piston, pushing down on the water. Find The change in pressure in the water due to the additional force • The change in volume of the water under this pressure
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