MTH642 ASSIGNMENT NO. 1 FALL 2022 || 100% RIGHT SOLUTION || FLUID MECHANICS || BY VuTech

MTH642 ASSIGNMENT NO. 1 FALL 2022

KINDLY, DON’T COPY PASTE  

MTH642 ASSIGNMENT NO. 1 FALL 2022 || 100% RIGHT SOLUTION || FLUID MECHANICS || BY VuTech

SEND WHATSAPP OR E-MAIL FOR ANY QUERY

0325-6644800

kamranhameedvu@gmail.com

Assignment # 1 MTH 642

Fall 2022

Maximum Marks: 15

Due Date: 30-11- 2022

INSTRUCTIONS

 Please read the following instructions before attempting the solution to this assignment:

 

•          To solve this assignment, you should have good command over lectures # 01-11

•          Try to get the concepts and consolidate your concepts and ideas from the questions you learn in these lectures. You should concern about the recommended books for clarification of concepts.

•          Upload assignments properly through LMS. No Assignment will be accepted through email.

•          Write your ID on the top of your solution file.

•          Do not use colored backgrounds in your solution files.

•          Use Math Type or Equation Editor etc. for mathematical symbols and equations.

•          You should remember that if we found the solution files of some students are the same, we will reward zero marks to all those students. Therefore, try to make a solution by yourself and protect your work from other students, otherwise you and the student who sends the same solution file as you will be given zero marks.

•          Avoid copying the solution from the book (or the internet); you must solve the assignment yourself.

•          Also remember that you are supposed to submit your assignment in Word format any other like scan images, HTML, etc. will not be accepted and we will give zero marks corresponding to these assignments.

SEND WHATSAPP OR E-MAIL FOR ANY QUERY

0325-6644800

kamranhameedvu@gmail.com 

                                                                                                 

Question:                                                                                                        Marks: 8+7=15

 

Q1: 

(a)  What is the difference between gage pressure and absolute pressure?

Solution:

Difference between Gauge Pressure and Absolute Pressure

	Gauge Pressure	Absolute Pressure
1.	Gauge pressure is defined as the pressure relative to barometric or atmospheric pressure.	Absolute pressure is defined as the pressure of having no matter inside a perfect vacuum of space.
2.	It doesn’t take atmospheric pressure into account. It is equal to Absolute pressure minus atmospheric or ambient pressure.	It is the addition of atmospheric pressure and gauge pressure. It is used for the calculation of atmospheric pressure
3.	It uses atmospheric pressure (14.7 PSI) as its Zero point.	Calculations that took in absolute pressure and use this absolute zero as their reference point.
4.	It cannot be used in gas law calculations as it doesn’t reflect accurate pressure but rather a difference in pressure.	It gives accurate barometric or atmospheric pressure when sealed in a high vacuum behind the detecting diaphragm.
5.	It is greatly influenced by changes in altitude or weather conditions in atmospheric pressure.	It doesn’t get influenced by any external changes in atmospheric pressure.
6.	The formula of Gauge pressure is given by, pg = ps – patm ,   (Where pg is gauge pressure, ps is system pressure and Patm is atmospheric pressure)	The formula of Absolute pressure is given by: pa = pg + patm  (Where pa is absolute pressure, pg is gauge pressure and Patm is atmospheric pressure)
7.	It is used in machines like Well pumps, Air compressors, and Tire gauges.	It is used for leak testing in a totally sealed container, smartwatches, and navigation systems for altimeter measurements.
8.	A manometer is a device used to measure gauge pressure.	Mercury Barometer is the device used to measure atmospheric pressure.

SEND WHATSAPP OR E-MAIL FOR ANY QUERY

0325-6644800

kamranhameedvu@gmail.com

 (b)  A vacuum gage connected to a chamber reads 25 kPa at a location where the atmospheric pressure is 97 kPa. Determine the absolute pressure in the chamber.

Solution:

Here

 

Vacuum Pressure = P_vac = 25 KPa

Atmospheric Pressure = P_atm= 97 KPa

 

We know that

Absolute Pressure = P_a = P_atm - P_vac

Absolute Pressure = P_a= 97-25 = 72Pa

SEND WHATSAPP OR E-MAIL FOR ANY QUERY

0325-6644800

kamranhameedvu@gmail.com

Q2:

Determine the pressure exerted on a diver at 15 m below the free surface of the sea. Assume a barometric pressure of 101 kPa and a specific gravity of 1.03 for seawater.

 

Solution

 

Atmospheric pressure = P_atm = 101 kPa

Distance from the free surface = h = 15 m

Specific gravity of sea water = 1.03

Density of sea water ρ= 1.03×1000=1030 𝒎3/kg

g=9.81

 

Pressure exerted on the diver at 15 m below the free surface= 𝑷𝒂 + 𝒑𝒈𝒉

= 𝟏𝟎𝟏𝟎𝟎𝟎 + (𝟏𝟎𝟑𝟎 ∗ 𝟗. 𝟖𝟏 ∗ 𝟏𝟓) = 𝟐𝟓𝟐𝟓𝟔𝟒 𝑷𝒂

Therefore,

Pressure acting on the diver 15 m below free surface is 𝟐𝟓𝟐𝟓𝟔𝟒 𝑷a

 

KINDLY, DON’T COPY PASTE

SUBSCRIBE, SHARE, LIKE AND COMMENTS FOR MORE UPDATES

SEND WHATSAPP OR E-MAIL FOR ANY QUERY

0325-6644800

kamranhameedvu@gmail.com 

Visit Website For More Solutions

www.vutechofficial.blogspot.com