PTEC 131 - Exam 2 - Fall 14
- 1.Provide an example of how both force and area affect pressure.
- 2.Pressure is defined as ____________
- A.
Pounds per unit of area
- B.
Inches per unit of area
- C.
Force applied to a unit area
- D.
Flow per unit of area
- 3.The density of a substance relative to the density of water
- A.
Inches of mercury
- B.
Inches of water
- C.
Bars
- D.
Specific gravity
- 4.Mass per unit volume
- A.
Specific gravity
- B.
density
- C.
Pressure
- D.
Force
- 5.Instrument used to measure the difference between two pressure points
- A.
Manometer
- B.
Capacitance transducer
- C.
Differential pressure cell
- D.
Strain gauge transducer
- 6.Small measurement of pressure equal to 0.036 psi at 4 degrees Celsius
- A.
Inches of mercury
- B.
Inches of water
- C.
Bars
- D.
Specific gravity
- 7.Device that contains a measurement diaphragm and capacitor plates
- A.
Manometer
- B.
Capacitance transducer
- C.
Differential pressure cell
- D.
Strain gauge transducer
- 8.Measurement of pressure equal to 0.987 atmospheres
- A.
Inches of mercury
- B.
Inches of water
- C.
Bars
- D.
Specific gravity
- 9.Measures the level of mercury in pounds per cubic inch
- A.
Inches of mercury
- B.
Inches of water
- C.
Bars
- D.
Specific gravity
- 10.Pressure measuring device consisting of a group of wires that stretch when pressure is applied.
- A.
Manometer
- B.
Capacitance transducer
- C.
Differential pressure cell
- D.
Strain gauge transducer
- 11.Pressure measuring device with two fluid chamber tube gauges connected by a U-shaped tube.
- A.
Manometer
- B.
Capacitance transducer
- C.
Differential pressure cell
- D.
Strain gauge transducer
- 12.Atmospheric pressure at sea level is ________ PSIA.
- A.
0
- B.
2
- C.
27.7
- D.
14.7
- 13.Atmospheric pressure at sea level is ________ PSIG.
- A.
0
- B.
2
- C.
27.7
- D.
14.7
- 14.The most common measurement scale for a manometer is ___________.
- A.
Bars
- B.
PSIA
- C.
Inches of Mercury
- D.
Inches of Water
- 15.The most common measurement scale used for vacuum is ________________.
- A.
Bars
- B.
PSIA
- C.
Inches of Mercury
- D.
Inches of Water
- 16.PSIA stands for ______________________.
- A.
Pounds per square inch atmosphere
- B.
Pounds per square inch average
- C.
Pounds per square inch absolute
- D.
Pressure per inch absolute
- 17.Pressure is increased when:
- A.
The number of molecules per unit of area is decreased
- B.
Heavier molecules per unit area are introduced
- C.
Molecules begin to move faster
- D.
The number of molecules are spread out over a larger unit area.
- 18.When calculating pressure, liquids and gases are considered as fluids.
- A.
True
- B.
False
- 19.Directions: Convert 100 inches H2O to psig using the following Conversion Chart to make the following conversions. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid 2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
204
- B.
49.01
- C.
3.61
- D.
2770
- 20.Directions: Convert 4.47 inches Hg to psig using the following Conversion Chart. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid 2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
2.19
- B.
9.11
- C.
123.81
- D.
19.17
- 21.Directions: Convert 3 psi to inches H2O using the following Conversion Chart. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid 2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
249.30
- B.
83.10
- C.
20.70
- D.
6.12
- 22.Directions: Convert 24.2 inches Hg to inches H2O using the following Conversion Chart. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
328.60
- B.
49.36
- C.
670.34
- D.
0.49
- 23.Directions: Convert 50 inches H2O to psig using the following Conversion Chart. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
24.50
- B.
1385
- C.
1.81
- D.
102.00
- 24.Directions: Convert 23.2 inches H2O to psig using the following Conversion Chart. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid 2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
8.5
- B.
11.37
- C.
642.64
- D.
0.84
- 25.Directions: Convert 300 inches H2O to inches Hg using the following Conversion Chart. Conversion ChartConvert psig to psiapsig + 14.7Convert psia to psigpsia - 14.7Convert psig to inches of H2Opsig x 27.7Convert psig to inches of Hgpsig x 2.04Convert inches of H2O to psigheight of liquid 27.7Convert inches Hg to psigheight of liquid 2.04 New Units = Known Units x New Eq Units Known Eq Units
- A.
10.83
- B.
147.05
- C.
22.09
- D.
220.90
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Sample Question___________ is the force applied to a unit area
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Sample QuestionPressure is defined as ____________
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