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Thermodynamics 1 (RCARDS) Flashcards

1
Q

Which of the ff. is NOT an instrument used to measure pressure?
A. Pitot Tube
B. Bourdon Tube
C. Aneroid
D. Manometer

A

Pitot Tube

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2
Q

What refers to the temperature at which a pure substance changes phase at a given pressure?

A

Saturation Temperature

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3
Q

What gas thermometer is based on the principle that at low pressure, the temperature of a gas is proportional to its pressure at constant volume?

A

constant-volume gas thermometer

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4
Q

What refers to the series of state through which a system passes during a process?

A

Path

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5
Q

A system in which there is a flow of mass is known as _____.

A

Open system

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6
Q

A system is in ___ equilibrium if there is no change in pressure at any point of the system with time.

A

mechanical

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7
Q

Which equipment is used to measure atmospheric (or air) pressure

A

Barometer

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8
Q

What is defined a region in space chosen for study?

A

System

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9
Q

When water exists in the liquid phase and is not about to vaporize, it is considered as ___ liquid.

A

compressed/subcooled

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10
Q

1 erg = ____ J

A

10^-7

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11
Q

1 atm = ____ Pa

A

101,325

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12
Q

A system is in _____ equilibrium if its chemical composition does not change with time. i.e., no chemical reaction occurs

A

Chemical

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13
Q

entropy is measured in _________.

A

J/K

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14
Q

1 calorie = _____ J

A

4.184

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15
Q

What is the internal energy associated with the phase of a system?

A

Latent Energy

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16
Q

What does term “steady” implies?

A

no change with time

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17
Q

What pressure measuring device consists of a coiled hollow tube that tends to straighten out when the tube is subjected to an internal pressure?

A

Bourdon Pressure Gage

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18
Q

The temperature of the ideal gas temperature scale are measured by using ________.

A

constant-volume gas thermometer

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19
Q

Study of Energy and its Transformations

A

Thermodynamics

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20
Q

What is considered as the actual pressure at a given position and is measured relative to absolute vacuum?

A

Absolute Pressure

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21
Q

What are the only two forms of energy interactions associated with closed system?

A

Heat transfer and work

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22
Q

What is the more elaborate approach to the study of thermodynamics based on the average behavior of large groups of individual particles?

A

Statistical Thermodynamics

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23
Q

Who formulated the zeroth law of thermodynamics in 1931?

A

Ralph H. Fowler

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24
Q

What is the process in which the system remains infinitesimally closed to an equilibrium state at all times?

A

Quasi-state/Quasi-equilibrium Process

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25
A substance that has fixed chemical composition is known as ________ substance.
Pure
26
What type if a system is related to molecular structure of a system?
Microscopic form of energy
27
A vapor that is about to condense is called _______ vapor.
Saturated
28
What is the SI unit of pressure?
Pascal
29
What is the real and imaginary surface that separates the system from its surroundings?
Boundary
30
The macroscopic approach to the study of thermodynamics does not require knowledge of the behavior of individual particles is called _______________.
Classical Thermodynamics
31
What refers to any change that a system undergoes from one equilibrium state to another equilibrium state?
Process
32
Which is NOT an extensive property of thermodynamics A. Mass B. Energy C. Density D. Volume
Density
33
What states that for a confined fluid, the pressure at a point has the same magnitude in all directions?
Pascal's Law
34
What is the SI unit of energy?
Joule
35
A system in which even energy is not allowed to cross the boundary is called _______.
Isolated System
36
Heat capacity of one mole of a substance.
Molar Heat Capacity
37
Heat content of the system
Enthalpy
38
The electron which spins about its axis will possess what kind of energy?
Spin Energy
39
What form of energy refers to those system processes as a whole with respect to some outside reference, frame, such as potential energy and kinetic energy?
Macroscopic form of energy
40
A liquid that is about to vaporize is called ______ liquid.
saturated
41
An open system may refer to ________.
control volume
42
1 bar = ___ Pa
10^5 or 100,000
43
What states that if two bodies are in thermal equilibrium with a third body, they are also in equilibrium with each other?
Zeroth Law of Thermodynamics
44
What refers to the strong repulsion between the positively charged nuclei which makes fusion reaction difficult to explain?
Coulomb Repulsion
45
A closed system may refer to ________.
Control Mass
46
A system is in _______ equilibrium if the temperature is the same throughout the entire system.
Thermal equilibrium
47
Which of the following is NOT a value of the standard atmospheric pressure? A. 1 bar B. 1 atm C. 1 kgf/cm^2 D. 14.223 psi
14.223 psi
48
The first law of thermodynamics is ______.
Law of conservation of energy
49
If a system involves two phases, it is in ______ equilibrium when the mass of each phase reaches an equilibrium level and stays there.
Phase Equilibrium
50
What is the thermodynamic temperature scale in SI?
Kelvin Scale
51
The first law of thermodynamics is based on which of the following principle?
Conservation of Energy
52
What does the term "uniform" implies?
No change with location
53
Process during which volume remains constant
Isometric/Isochoric
54
What is the internal energy associated with the atomic bonds in a molecule called?
Chemical Energy
55
What refers to the portion of the internal energy of a system associated with the kinetic energy of the molecules?
Sensible energy
56
The boundary of a control volume, which may be either real or imaginary is called ________.
Control Surface
57
What is the process with identical end states called?
cycle
58
What refers to the measure of the disorder present in a given substance or system?
Entropy
59
What is defined as the process during which a fluid flows through a control volume steadily?
Steady-flow Process or Steady-State Flow Process
60
Extensive property per unit mass.
Specific properties
61
Without electrical, mechanical, gravitational, surface tension and motion effect, a system is called _______.
Simple compressible system
62
The difference between the absolute pressure and atmospheric pressure
Gauge Pressure
63
Heat capacity of one gram of substance
specific heat
64
The thermodynamic properties that are dependent on the size/substance of the system.
Extensive Property
65
"The enthalpy change for any chemical reaction is independent of the intermediate stages, provided the initial and final conditions are the same for each route."
Hess's Law
66
What is defined as the force per unit area? A. Energy B. Power C. Pressure D. Work
Pressure
67
Amount of heat needed to raise the temperature of an object by one degree celsius or 1 K
Heat Capacity
68
Open system usually encloses which of the following devices? A. All of the above B. Turbine C. Compressor D. Nozzle
All of the above
69
The prefix "iso" used to designate a process means ________.
Remain constant
70
What is the extremely large amount of energy associated with the strong bonds within the nucleus of the atom itself called?
Nuclear Energy
71
The molecules of a gas moving through space with some velocity possess what kind of energy?
Translational Energy
72
The term THERMODYNAMICS was first used in 1849 in the publication of __________.
Lord Kelvin
73
The term THERMODYNAMICS comes from Greek words "therme" and "dynamis" which mean _______.
Heat Power
74
What is an energy that can be transferred from one object to another causing a change in temperature of each object?
Heat
75
What is considered as the actual pressure at a given position and is measured relative to absolute vacuum?
Absolute pressure
76
What is the pressure below atmospheric pressure?
Vacuum Pressure
77
Process during which temperature remains constant.
Isothermal
78
What is the energy absorbed during chemical reaction under constant volume conditions?
79
A system which consists of fixed amount of mass and no mass can cross its boundaries is called __________?
Closed System
80
What is the unit of the total energy of the system? A. g B. kg C. kJ D. kJ/kg
kJ
81
A vapor that is not about to condense is called ________ vapor.
superheated
82
What temperature scale is identical to Kelvin Scale
Ideal Gas Temperature Scale
83
Any characteristic of a thermodynamics system is called _______.
Property
84
The thermodynamic property that are independent on the size/substance of the system?
intensive property
85
What is the state at which all three phases of water coexist in equilibrium?
Triple point of water
86
Process during which pressure remains constant.
Isobaric
87
What is the thermodynamic temperature scale in English system?
Rankine Scale
88
The state of a simple compressible system is completely specified by two independent, intensive properties.
State Postulate
89
How many independent properties are required to completely fix the equilibrium state of a pure gaseous compound?
2
90
How are thermodynamics properties classified?
Intensive and Extensive
91
The electrons in an atom which rotate about the nucleus possess what kind of energy?
Rotational Kinetic Energy
92
1 J = _______
1 kg m^2 / s^2
93
The sum of all the microscopic form of energy
Internal Energy
94
A system is said to be thermodynamic equilibrium if it maintains _______ equilibrium
Thermal, Phase, Mechanical and Chemical
95
Another unit used to measure pressure is torr. Named after Evangelista Toricelli, an Italian physicist. Average Atmospheric Pressure = ___ torr.
760
96
What law asserts that energy is a thermodynamic property?
First law of Thermodynamics
97
What is the mass or region outside the system called?
Surrounding
98
What law asserts that energy has quality as well as quantity?
Second Law of Thermodynamics
99
The unit Pascal is equivalent to _____.
N/m^2
100
Which is NOT an intensive property of thermodynamics? A. Pressure B. Mass C. Temperature D. Density
Mass
101
Who coined the term "Energy"?
Thomas Young

Thermodynamics (4 decks)

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