PTEC 131 - Exam 2 - Fall 14

44 Questions | By Cstevenson_ladel | Updated: Mar 14, 2022 | Attempts: 147

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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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