# thermo quiz for study guide

Pages: 14 (1214 words) Published: February 19, 2014
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
Saturated mixture
Compressed liquid

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 #
B

Fill the following table
Substance
R134a
H2O
R134a
H2O
H2O

T, oC
340
50
105
250

P, kPa
360
8200
2000

v, m3/kg
0.025

u kJ/kg

x

2645
1

1800

Phase description

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
350

-20

P, kPa
2000
125
8200
160
500

Substance
H2O
H2O
H2O
R134a
R134a

T, oC
350
105
360
-15.6
-20

P, kPa
2000
125
8200
160
500

360

* quality not defined

v, m3/kg

u kJ/kg

x

Phase description

1
2645
0.025

v, m3/kg
0.1386
1.62
0.02997
0.025
0.0007356

u kJ/kg
2859
2507
2645
68.65
25.26

X

Phase description
Superheated vapor
1
Saturated vapor
Superheated vapor
0.1975 Saturated mixture
Compressed liquid

King Fahd University of Petroleum and Minerals
Mechanical Engineering Department
ME203 Thermodynamics
Quiz # 3 (Term 072)
Saturday 26-4-2008
20 Minutes

Student Name
ID #
A

A steam turbine receives water at 15 MPa, 600 oC at a rate of 100 kg/s, as shown in figure. In the middle section, 20 kg/s is withdrawn at 2 MPa, 350 oC, and the rest exits the turbine at 75 kPa, and 95% quality. Assume no heat transfer and no changes in kinetic energy, find the total turbine power.

Steam

(1)

W

(2)

(3)

King Fahd University of Petroleum and Minerals
Mechanical Engineering Department
ME203 Thermodynamics
Quiz # 3 (Term 072)
Saturday 26-4-2008
20 Minutes

Student Name
ID #
B

A steam turbine receives water at 12.5 MPa, 600 oC at a rate of 100 kg/s, as shown in figure. In the middle section, 20...