16371019
Descripción
Test por Peace Adefioye, actualizado hace más de 1 año
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Creado por Peace Adefioye
hace casi 6 años
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Pregunta 1
Pregunta
A thermodynamics system is separated from the rest of the universe by a membrane, which delimits a finite volume and through which heat or other forms of energy may pass.
Respuesta
- True
- False
Pregunta 2
Pregunta
Regions outside the boundaries of the system are termed extra system
Respuesta
- True
- False
Pregunta 3
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Homogeneous thermodynamic system has two or more phases, which are separated from one another by definite bounding surfaces.
Respuesta
- True
- False
Pregunta 4
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An intensive variable is a physical quantity whose value depends on the amount of the substance
Respuesta
- True
- False
Pregunta 5
Pregunta
Changes in a thermodynamic system are often described by differentials of its state variables
Respuesta
- True
- False
Pregunta 6
Pregunta
Most thermodynamic equations are functions with several variables
Respuesta
- True
- False
Pregunta 7
Pregunta
For a given amount of substance temperature, pressure and volume are not independent from each other. They are connected by an equation of state.
Respuesta
- True
- False
Pregunta 8
Pregunta
Differentiation means finding slopes or the rate of change of one variable with respect to another
Respuesta
- True
- False
Pregunta 9
Pregunta
Small changes in a state function with several variables can be represented by a total differential. For this, all partial differentials of this function must be added.
Respuesta
- True
- False
Pregunta 10
Pregunta
Temperature and pressure are extensive variables
Respuesta
- True
- False
Pregunta 11
Pregunta
The total energy of the system and its surroundings is conserved
Respuesta
- True
- False
Pregunta 12
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Energy may be extracted from an object from an object either by cooling, compression, or extraction of matter
Respuesta
- True
- False
Pregunta 13
Pregunta
A system is said to be in thermodynamic equilibrium when any of its properties such as temperature, pressure, colume etc. change with time
Respuesta
- True
- False
Pregunta 14
Pregunta
Each thermodynamic process is distinguished from other processes in energetic character, according to what parameters, such as temperature, pressure, or volume etc are held constant.
Respuesta
- True
- False
Pregunta 15
Pregunta
Reversible thermodynamic processes are processes, which develop so slowly as to allow each intermediate step to be an equilibrium state
Respuesta
- True
- False
Pregunta 16
Pregunta
Dissipative structures are stationary states with completely new qualities
Respuesta
- True
- False
Pregunta 17
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Density is an intensive variable.
Respuesta
- True
- False
Pregunta 18
Pregunta
An isobaric process occurs at constant volume.
Respuesta
- True
- False
Pregunta 19
Pregunta
Thermodynamic systems possess energy, but not heat or work. Heat and work are transfer phenomena.
Respuesta
- True
- False
Pregunta 20
Pregunta
The pressure, temperature and chemical potential are the generalized forces, which drive the generalized changes in volume, entropy and particle number respectively.
Respuesta
- True
- False
Pregunta 21
Pregunta
Heat and work are not state variables
Respuesta
- True
- False
Pregunta 22
Pregunta
Force-displacement is a conjugate pair
Respuesta
- True
- False
Pregunta 23
Pregunta
dU represents an infinitesimal change in internal energy
Respuesta
- True
- False
Pregunta 24
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A process during which there is no heat transfer is called an isothermal process.
Respuesta
- True
- False
Pregunta 25
Pregunta
The internal energy is an extensive property of a system while the internal energy per mole is an intensive state property of that system
Respuesta
- True
- False
Pregunta 26
Pregunta
Conjugate variables are sets of intensive and extensive variables whose product has the dimensions of energy.
Respuesta
- True
- False
Pregunta 27
Pregunta
A system is in a particular thermodynamic state when values of the properties of the system called as [blank_start]variables of state[blank_end] are known.
Respuesta
-
variables of state
Pregunta 28
Pregunta
There are three main types of systems: [blank_start]closed[blank_end], [blank_start]open[blank_end] and [blank_start]isolated[blank_end] systems.
Respuesta
-
closed
-
open
-
isolated
Pregunta 29
Pregunta
In open systems, [blank_start]matter[blank_end], [blank_start]energy[blank_end] and [blank_start]work[blank_end] may cross the boundary.
Respuesta
-
matter
-
energy
-
work
Pregunta 30
Pregunta
The variables of state are four in number: [blank_start]temperature[blank_end], [blank_start]pressure[blank_end], [blank_start]volume[blank_end], [blank_start]composition[blank_end].
Respuesta
-
composition
-
volume
-
pressure
-
temperature
Pregunta 31
Pregunta
A system is [blank_start]homogeneous[blank_end] when it has the same chemical composition throughout.
Respuesta
-
homogeneous
Pregunta 32
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[blank_start]Thermodynamic state[blank_end] is defined as the instantaneous quantitative description of a system with a set number of variables held constant.
Respuesta
-
Thermodynamic state
Pregunta 33
Pregunta
In closed systems, [blank_start]energy[blank_end] cannot cross the boundary,
Respuesta
-
energy
Pregunta 34
Pregunta
Viscosity and specific heat are [blank_start]extensive[blank_end] variables.
Respuesta
-
extensive
Pregunta 35
Pregunta
Small changes in a state function with several variables can be represented by the so-called [blank_start]differential[blank_end].
Respuesta
-
differential
Pregunta 36
Pregunta
A system, in which all equalizing processes have gone to completion, is said to be in a state of [blank_start]thermodynamic equilibrium[blank_end].
Respuesta
-
thermodynamic equilibrium
Pregunta 37
Pregunta
An [blank_start]isentropic[blank_end] process occurs at constant entropy.
Respuesta
-
isentropic
Pregunta 38
Pregunta
Total differential of a function y=f(x) can be calculated from the product of [blank_start]the first derivative[blank_end] of the function and dx.
Respuesta
-
the first derivative
Pregunta 39
Pregunta
An [blank_start]extensive[blank_end] variable can be expressed as the sum of the quantities for the separate subsystems that compose the entire system.
Respuesta
-
extensive
Pregunta 40
Pregunta
An [blank_start]isobaric[blank_end] process occurs at constant pressure.
Respuesta
-
isobaric
Pregunta 41
Pregunta
A [blank_start]thermodynamic process[blank_end] is defined as the energetic progression of a thermodynamic system proceeding from an initial state to a final state.
Respuesta
-
thermodynamic process
Pregunta 42
Pregunta
Refractive index is a(n) [blank_start]extensive[blank_end] variable.
Respuesta
-
extensive
Pregunta 43
Pregunta
The most common conjugate thermodynamic variables are [blank_start]pressure-volume[blank_end]; [blank_start]temperature-entropy[blank_end]; [blank_start]chemical potential-particle number[blank_end].
Respuesta
-
pressure-volume
-
temperature-entropy
-
chemical potential-particle number
Pregunta 44
Pregunta
A system has three types of equilibrium: [blank_start]thermal[blank_end], [blank_start]chemical[blank_end] and [blank_start]mechanical[blank_end].
Respuesta
-
thermal
-
chemical
-
mechanical
Pregunta 45
Pregunta
An [blank_start]isothermal[blank_end] process occurs without loss or gain of heat.
Respuesta
-
isothermal
Pregunta 46
Pregunta
The properties of the system can be described by an equation of [blank_start]differentials[blank_end], which specifies the relationship between state variables.
Respuesta
-
differentials
Pregunta 47
Pregunta
Energy may be transferred into a body by [blank_start]heating[blank_end], compression, or addition of matter.
Respuesta
-
heating
Pregunta 48
Pregunta
Thermodynamic systems transfer energy as the result of a [blank_start]generalized force[blank_end] causing a generalized displacement, with the product of the two being the amount of energy transferred.
Respuesta
-
generalized force
Pregunta 49
Pregunta
Quantities describing the state of a system, such as internal energy, pressure, volume, temperature, and mass are called [blank_start]thermodynamic variables[blank_end].
Respuesta
-
thermodynamic variables
Pregunta 50
Pregunta
An idealized process that is carried out at constant temperature is called an [blank_start]isothermal process[blank_end].
Respuesta
-
isothermal process
Pregunta 51
Pregunta
The amount of heat transferred per unit time is called [blank_start]rate of heat[blank_end].
Respuesta
-
rate of heat
Pregunta 52
Pregunta
The work done per unit time is called [blank_start]rate of work[blank_end].
Respuesta
-
rate of work
Pregunta 53
Pregunta
In a closed system, the [blank_start]energy[blank_end] and chemical composition of the constituents remain constant.
Respuesta
-
energy
Pregunta 54
Pregunta
The word thermodynamics stems from two stems Greek words meaning:
Respuesta
-
conservation of heat
-
interactions of heat
-
study of heat
-
movement of heat
Pregunta 55
Pregunta
In thermodynamic processes, which of the following statements is NOT true?
Respuesta
-
In an isochoric process the pressure remains constant
-
In an isothermal process the temperature remains constant
-
In an adiabatic process the system is insulated from the surroundings
Pregunta 56
Pregunta
A process, in which the working substance neither receives nor gives heat to its surroundings during expansion or compression is called
Respuesta
-
isothermal process
-
hyperbolic process
-
adiabatic process
-
none of the above
Pregunta 57
Pregunta
Which of the following is NOT a state variable?
Respuesta
-
Work
-
Interal energy
-
Entropy
-
Temperature
-
Pressure
Pregunta 58
Pregunta
Heat flow is considered negative when heat flows [ ] a system; work is considered positive when work is done [ ] a system.
Respuesta
-
out of; by
-
into; by
-
out of; on
-
into; on
Pregunta 59
Pregunta
Because internal energy U is a state variable and depends only on the state of the system but not on how the system has achieved that state, we can write:
Respuesta
-
dU = 0
-
dU = U2 - U1
-
dU = Q + W
-
dU = U1 - U2
Pregunta 60
Pregunta
Which of the following laws of physics has become the foundation of thermodynamics?
Respuesta
-
Newton's laws of motion
-
the law of conservation of energy
-
the law of universal gravitation
-
the law of conservation of momentum
Pregunta 61
Pregunta
According to the laws of thermodynamics, all processes occuring in nature are
Respuesta
-
reversible and unidirectional
-
irreversible and unidirectional
-
reversible and bidirectional
-
irreversible and bidirectional
Pregunta 62
Pregunta
Which of the following is TRUE about thermodynamics?
Respuesta
-
It is based on the conservation principle
-
It deals with energy
-
It refers to direction of heat movements
-
All of the above
Pregunta 63
Pregunta
Which of the following are reversible process(es)?
Respuesta
-
Slow heating of water from a hot source
-
Constant pressure heating of an ideal gas from a constant temperature source
-
Evaporation of a liquid at constant temperature
Pregunta 64
Pregunta
Ice kept in a well insulated container is an example of which system?
Respuesta
-
a closed system
-
an isolated system
-
an open system
-
a diathermic system
Pregunta 65
Pregunta
Thermodynamic work is the product of
Respuesta
-
two intensive properties
-
two extensive properties
-
an intensive property and change and change in an extensive property
-
an extensive property and change in an intensive property
Pregunta 66
Pregunta
Which of the following is an intensive property?
Respuesta
-
Kinetic Energy
-
Gravitational potential energy
-
Pressure
-
Entropy
Pregunta 67
Pregunta
Pressure and volume are thermodynamic parameters. Their product is expressed in units [ ]
Respuesta
-
mass
-
energy
-
temperature
Pregunta 68
Pregunta
In an irreversible process, there is [ ]
Respuesta
-
no loss of mass
-
no gain of energy
-
gain of heat
-
loss of heat
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