thermo quiz for study guide

King Fahd University of Petroleum and Minerals
Mechanical Engineering Department
ME203 Thermodynamics
Quiz # 1 (Term 072)
Monday 17-3-2008
15 Minutes

Student Name
ID #
A

A gasoline line is connected to a pressure gage through a double-U manometer. For a given reading of the pressure gage,
1. Determine the gage pressure of the gasoline line.
2. Determine the absolute pressure of the gasoline line.

King Fahd University of Petroleum and Minerals
Mechanical Engineering Department
ME203 Thermodynamics
Quiz # 1 (Term 072)
Monday 17-3-2008
15 Minutes

Student Name
ID #
B

A gasoline line is connected to a pressure gage through a double-U manometer. The gage pressure of the gasoline line is 165 kPa.
1. Determine the reading of the pressure gage.
2. Determine the absolute value of the pressure at A

A

165 kPa

King Fahd University of Petroleum and Minerals
Mechanical Engineering Department
ME203 Thermodynamics
Quiz # 1 (Term 072)
Monday 17-3-2008
15 Minutes

Student Name
ID #
A

A water pipe is connected to a double U-tube manometer as shown in figure at a location where local atmospheric pressure is 98 kPa.
Determine the absolute pressure at the center of the pipe.
Oil SG = 0.8
Mercury SG = 13.6

King Fahd University of Petroleum and Minerals
Mechanical Engineering Department
ME203 Thermodynamics
Quiz # 2 (Term 072)
Saturday 22-3-2008
35 Minutes

Student Name
ID #
A

Fill the following table
Substance
H2O
H2O
H2O
R134a
R134a

T, oC
250
105
340

Substance
H2O
H2O
H2O
R134a
R134a

P, kPa
1800

v, m3/kg

u kJ/kg

x

Phase description

1
0.025

50

8200
360
2000

T, oC
250
105
340
5.82
50

P, kPa
1800
120.8
8200
360
2000

v, m3/kg
0.125
1.42
0.02806
0.025
0.0009013

* quality not defined

2645

u kJ/kg
2685
2512
2715
134.6
121.4

X
*
1
*
0.4322
*

Phase description
Superheated vapor
Saturated vapor
Superheated vapor