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Questions and Answers
What is true about the change in entropy of the system and surroundings for an irreversible process?
What is true about the change in entropy of the system and surroundings for an irreversible process?
For which type of process does the equation dQ = Tds hold?
For which type of process does the equation dQ = Tds hold?
What is the expression for the heat of vaporization?
What is the expression for the heat of vaporization?
What is the value of the work done for a closed, reversible, isometric system?
What is the value of the work done for a closed, reversible, isometric system?
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Which of the following thermodynamic cycles is the most efficient?
Which of the following thermodynamic cycles is the most efficient?
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Which of the following is true for any thermodynamic process?
Which of the following is true for any thermodynamic process?
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Which of the following is not a unit of pressure?
Which of the following is not a unit of pressure?
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A substance is oxidized when which of the following occurs?
A substance is oxidized when which of the following occurs?
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What is the absolute zero on the Celsius scale?
What is the absolute zero on the Celsius scale?
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What is the only base unit with a prefix kilo?
What is the only base unit with a prefix kilo?
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What is the force of gravity on the body commonly referred to as?
What is the force of gravity on the body commonly referred to as?
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What temperature scale is called degrees Rankine?
What temperature scale is called degrees Rankine?
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In which year was the Fahrenheit scale introduced by Gabriel Fahrenheit?
In which year was the Fahrenheit scale introduced by Gabriel Fahrenheit?
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What is the absolute temperature in the Celsius scale?
What is the absolute temperature in the Celsius scale?
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What is the solid-liquid equilibrium temperature of Tin?
What is the solid-liquid equilibrium temperature of Tin?
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What is the liquid-vapor equilibrium temperature of Sulfur?
What is the liquid-vapor equilibrium temperature of Sulfur?
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What is the term for the heat energy transferred to a substance during a constant pressure process?
What is the term for the heat energy transferred to a substance during a constant pressure process?
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Which law states that in a confined gas with constant temperature, volume is inversely proportional to absolute pressure?
Which law states that in a confined gas with constant temperature, volume is inversely proportional to absolute pressure?
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Which process allows a system to return to its original state after undergoing a series of changes?
Which process allows a system to return to its original state after undergoing a series of changes?
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What is the energy stored within a system referred to as?
What is the energy stored within a system referred to as?
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Which type of process occurs where the system departs from equilibrium only infinitesimally at every instant?
Which type of process occurs where the system departs from equilibrium only infinitesimally at every instant?
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Which term describes a thermodynamic system that serves as a heat source or heat sink for another system?
Which term describes a thermodynamic system that serves as a heat source or heat sink for another system?
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Which of the following best describes an ideal gas that strictly follows Boyle's law and Charles' law?
Which of the following best describes an ideal gas that strictly follows Boyle's law and Charles' law?
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What is the name of the heat exchange process where pressure and volume remain constant?
What is the name of the heat exchange process where pressure and volume remain constant?
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What is the area under the curve of a pressure-volume diagram at standard pressure?
What is the area under the curve of a pressure-volume diagram at standard pressure?
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What temperature does the outermost surface of the cup equal to when dew starts to form?
What temperature does the outermost surface of the cup equal to when dew starts to form?
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What do you call a conversion technology that yields electricity straight from sunlight without using any mechanical cycle?
What do you call a conversion technology that yields electricity straight from sunlight without using any mechanical cycle?
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What property of a liquid extends resistance to angular or shear deformation?
What property of a liquid extends resistance to angular or shear deformation?
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In a two-phase system, 30% moisture means what proportion of liquid and vapor?
In a two-phase system, 30% moisture means what proportion of liquid and vapor?
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In the Stirling and Ericson cycles, what effect does regeneration have?
In the Stirling and Ericson cycles, what effect does regeneration have?
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What is the first law of thermodynamics based on?
What is the first law of thermodynamics based on?
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When the pressure is decreased, what will happen to the boiling temperature of water at 101.325 kPa?
When the pressure is decreased, what will happen to the boiling temperature of water at 101.325 kPa?
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What is the temperature difference of the cycle if the entropy difference is △S and the work done is W?
What is the temperature difference of the cycle if the entropy difference is △S and the work done is W?
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Which of the following is not an advantage of a superheated, closed Rankine cycle over an open Rankine cycle?
Which of the following is not an advantage of a superheated, closed Rankine cycle over an open Rankine cycle?
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Which statement regarding the Rankine cycle is not true?
Which statement regarding the Rankine cycle is not true?
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Which of the following is the definition of Joule?
Which of the following is the definition of Joule?
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What principle is the basis for Bernoulli's equation for fluid flow?
What principle is the basis for Bernoulli's equation for fluid flow?
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Which of the following is NOT a valid equation of state for a single component?
Which of the following is NOT a valid equation of state for a single component?
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The state of a thermodynamic system is always defined by its:
The state of a thermodynamic system is always defined by its:
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Which of the following best describes an advantage of using superheated steam in a Rankine cycle?
Which of the following best describes an advantage of using superheated steam in a Rankine cycle?
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What happens to the temperature of an ideal gas that is compressed in an insulated cylinder where heat transfer is negligible?
What happens to the temperature of an ideal gas that is compressed in an insulated cylinder where heat transfer is negligible?
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Which cycle consists of two isothermal processes and two constant volume processes?
Which cycle consists of two isothermal processes and two constant volume processes?
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What is the SI unit of pressure?
What is the SI unit of pressure?
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In a polytropic process described by PVn = constant, what type of process occurs if n is infinitely large?
In a polytropic process described by PVn = constant, what type of process occurs if n is infinitely large?
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If temperature is held constant and pressure exceeds saturation pressure, the working medium is classified as:
If temperature is held constant and pressure exceeds saturation pressure, the working medium is classified as:
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A water temperature of 18 °F in a water-cooled condenser is equivalent to which Celsius temperature?
A water temperature of 18 °F in a water-cooled condenser is equivalent to which Celsius temperature?
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The latent heat of vaporization in Joules per kg is equal to which of the following?
The latent heat of vaporization in Joules per kg is equal to which of the following?
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What is a substance called if its temperature is below the saturation temperature at its pressure?
What is a substance called if its temperature is below the saturation temperature at its pressure?
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Study Notes
Thermodynamics Terms
- Enthalpy of an ideal gas is a function only of temperature
- Most efficient thermodynamic cycle: Carnot
- First law of thermodynamics: Energy can neither be created nor destroyed
- Ideal gas compression (isothermal): Enthalpy change is zero
- Process with no heat transfer: Adiabatic
- SI unit of pressure: Pascal
- Cp =Cv + R applies to ideal gases
- Mechanical energy of pressure into heat energy: Enthalpy
- Heat of compression theory: Thermodynamics
- Average pressure on a surface: Mean effective pressure
- Two isothermal and two constant volume processes: Stirling cycle
- Fixed region in space: Control volume
- Polytropic process (PV = constant): Isobaric if n = infinity
- Below saturation pressure: Subcooled liquid
- At saturation pressure: Saturated liquid
- Above saturation pressure: Compressed liquid
- Molecules per mole of substance: Avogadro's number
- Volume proportional to absolute temperature: Charles' law
- Protons in an atom: Atomic number
- Latent heat of vaporization: Energy required to change liquid to gas
- Kinetic energy of molecules: Internal energy
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Description
Test your knowledge on key thermodynamic concepts and terms. This quiz covers essential principles such as the laws of thermodynamics, properties of gases, and various thermodynamic cycles. Challenge yourself to see how well you understand this fundamental topic in physics.
