None HW1: A gas flows through a horizontal pipe with cross-sectional area of 30 cm.At certain point, gauge pressure is 300 kpa when the temperature is 20 °C. Atanother point, the cross-sectional area is 15 cm and the gauge pressure is 250 kpa.If the mass flow rate was 0.15 kg/s, find the velocities at these points? Assumeisothermal process and take Patm as 100 kpa.HW2: A gas with a velocity of 350 m/s flows through a horizontal pipe at asection when the pressure is 80 kpa (absolute) and the temperature 303 k. Thecross-sections have changed and the pressure became 120 kpa (absolute). Find thevelocity of the changed section when the flow is assumed to be adiabatic?HW3: A gas flows a horizontal pipe when the cross-sectional area has changedfrom 40 cm to 20 cm and the gauge pressure from 400 kpa to 300 kpa at 15 °C. Ifthe mass flow rate is 0.5 kg/s and the change is assumed to be isothermal, find thevelocities before and after the change? Take Patm = 100 kpa and R=292 J/kg. k.

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HW1: A gas flows through a horizontal pipe with cross-sectional area of 30 cm2. At certain point, gauge pressure is 300 kpa when the temperature is 20 °C. At another point, the cross-sectional area is 15 cm and the gauge pressure is 250 kpa. If the mass flow rate was 0.15 kg/s, find the velocities at these points? Assume isothermal process and take Patm as 100 kpa.

HW1: A gas flows through a horizontal pipe with cross-sectional area of 30 cm2. At certain point, gauge pressure is 300 kpa when the temperature is 20 °C. At another point, the cross-sectional area is 15 cm and the gauge pressure is 250 kpa. If the mass flow rate was 0.15 kg/s, find the velocities at these points? Assume isothermal process and take Patm as 100 kpa.

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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Concept explainers

Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.

Question

None

HW1: A gas flows through a horizontal pipe with cross-sectional area of 30 cm.
At certain point, gauge pressure is 300 kpa when the temperature is 20 °C. At
another point, the cross-sectional area is 15 cm and the gauge pressure is 250 kpa.
If the mass flow rate was 0.15 kg/s, find the velocities at these points? Assume
isothermal process and take Patm as 100 kpa.
HW2: A gas with a velocity of 350 m/s flows through a horizontal pipe at a
section when the pressure is 80 kpa (absolute) and the temperature 303 k. The
cross-sections have changed and the pressure became 120 kpa (absolute). Find the
velocity of the changed section when the flow is assumed to be adiabatic?
HW3: A gas flows a horizontal pipe when the cross-sectional area has changed
from 40 cm to 20 cm and the gauge pressure from 400 kpa to 300 kpa at 15 °C. If
the mass flow rate is 0.5 kg/s and the change is assumed to be isothermal, find the
velocities before and after the change? Take Patm = 100 kpa and R=292 J/kg. k.

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