_________ is the grand total of all energies inside a substance.  a. Internal Energy  b. Grand Energy  c. Atomic Energy  d. Elemental Energy

_________ is the grand total of all energies inside a substance.  a. Internal Energy  b. Grand Energy  c. Atomic Energy  d. Elemental Energy
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Internal Energy
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The sum of energies of all the molecules in a system, energies that appear in several complex forms.  a. External Energy  b. Internal Energy  c. Kinetic Energy  d. None of the above

Description : The sum of energies of all the molecules in a system, energies that appear in several complex forms.  a. External Energy  b. Internal Energy  c. Kinetic Energy  d. None of the above

Last Answer : Internal Energy

What refers to the portion of the internal energy of a system associated with the kinetic energies of the molecules?  A. Translational energy  B. Spin energy  C. Rotational kinetic energy  D. Sensible energy

Description : What refers to the portion of the internal energy of a system associated with the kinetic energies of the molecules?  A. Translational energy  B. Spin energy  C. Rotational kinetic energy  D. Sensible energy

Last Answer : Sensible energy

What form of energy refers to those a system possesses as a whole with respect to some outside reference frame, such as potential and kinetic energies?  A. Macroscopic form of energy  B. Microscopic form of energy  C. Internal energy  D. External energy

Description : What form of energy refers to those a system possesses as a whole with respect to some outside reference frame, such as potential and kinetic energies?  A. Macroscopic form of energy  B. Microscopic form of energy  C. Internal energy  D. External energy

Last Answer : Macroscopic form of energy

_________ the very small KE still present in molecules at absolute zero temperature.  a. internal KE  b. Atomic kinetic energy  c. Zero-Point Energy  d. Subliminal Energy

Description : _________ the very small KE still present in molecules at absolute zero temperature.  a. internal KE  b. Atomic kinetic energy  c. Zero-Point Energy  d. Subliminal Energy

Last Answer : Zero-Point Energy

_________ is the energy stored within a body or substance by virtue of the activity and configuration of its molecules.  a. Internal Energy  b. External Energy  c. Kinetic Energy  d. Potential Energy

Description : _________ is the energy stored within a body or substance by virtue of the activity and configuration of its molecules.  a. Internal Energy  b. External Energy  c. Kinetic Energy  d. Potential Energy

Last Answer : Internal Energy

Total heat of a substance is also known as  (a) internal energy  (b) entropy  (c) thermal capacity  (d) enthalpy  (e) thermal conductance.

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Last Answer : Answer : d

_________ is a measure of the average kinetic energy per molecule in a substance.  a. movement  b. temperature  c. heat  d. mass

Description : _________ is a measure of the average kinetic energy per molecule in a substance.  a. movement  b. temperature  c. heat  d. mass

Last Answer : temperature

What is the internal energy associated with the atomic bonds in a molecule called?  A. Chemical energy  B. Latent energy  C. Phase energy  D. State energy

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Entropy is the measure of:  a. The internal energy of a gas  b. The heat capacity of a substance  c. Randomness or disorder  d. The change of enthalpy of a system

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Last Answer : Randomness or disorder

Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Description : Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Last Answer : Enthalpy

If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly  (a) temperature  (b) enthalpy  (c) internal energy  (d) entropy  (e) all of the above.

Description : If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly  (a) temperature  (b) enthalpy  (c) internal energy  (d) entropy  (e) all of the above.

Last Answer : Answer : d

The process of one substance mixing with another because of molecular motion is called _________.  a. diffusion  b. viscosity  c. streamline flow  d. solution

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Last Answer : change

_________ is the transition of a given substance from the solid to the gas phase with no intermediate liquid stage.  a. Convection  b. Conduction  c. Radiation  d. Sublimation

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Last Answer : Sublimation

The heat Q per unit mass per degree change in temperature that must be supplied or removed to change the temperature of a substance.  a. Specific Heat Capacity  b. Latent Heat  c. Heat of Transformation  d. Internal Heat

Description : The heat Q per unit mass per degree change in temperature that must be supplied or removed to change the temperature of a substance.  a. Specific Heat Capacity  b. Latent Heat  c. Heat of Transformation  d. Internal Heat

Last Answer : Specific Heat Capacity

What is known as the total heat and heat content at various times in the history?  a. enthalpy  b. entropy  c. internal energy  d. latent heat

Description : What is known as the total heat and heat content at various times in the history?  a. enthalpy  b. entropy  c. internal energy  d. latent heat

Last Answer : enthalpy

The sum of all the microscopic form of energy is called _____.  A. Total energy  B. Internal energy  C. System energy  D. Phase energy

Description : The sum of all the microscopic form of energy is called _____.  A. Total energy  B. Internal energy  C. System energy  D. Phase energy

Last Answer : Internal energy

According to first law of thermodynamics  (a) work done by a system is equal to heat transferred by the system  (b) total internal energy of a system during a process remains constant  (c) internal energy, enthalpy and entropy during a process remain constant  (d) total energy of a system remains constant

Description : According to first law of thermodynamics  (a) work done by a system is equal to heat transferred by the system  (b) total internal energy of a system during a process remains constant  ( ... , enthalpy and entropy during a process remain constant  (d) total energy of a system remains constant

Last Answer : Answer : d

Intensive properties of a system are called _________.  a. Bulk Properties  b. Innate Properties  c. Natural Properties  d. Inside Properties

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Description : All the energy we consume ultimately becomes _________.  a. heat  b. depleted  c. exhausted  d. work

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Description : _________ is a thermodynamic potential that measures the “useful” or process-initiating work obtainable from an isothermal, isobaric thermodynamic system.  a. Du-Pont Potential  b. Gibbs free energy  c. Rabz-Eccles Energy  d. Claussius Energy

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The amount of heat energy per kilogram that must be added or removed when a substance changes from one phase to another.  a. specific heat  b. heat of expansion  c. latent heat  d. useful heat

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Last Answer : latent heat

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Description : What is defined as the energy required to raise the temperature of a unit mass of a substance by one degree?  A. Latent heat of fusion  B. Molar heat  C. Specific heat capacity  D. Specific heat

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According to first law of thermodynamics  (a) mass and energy are mutually convertible  (b) Carnot engine is most efficient  (c) heat and work are mutually convertible  (d) mass and light are mutually convertible  (e) heat flows from hot substance to cold substance.

Description : According to first law of thermodynamics  (a) mass and energy are mutually convertible  (b) Carnot engine is most efficient  (c) heat and work are mutually convertible  (d) mass and light are mutually convertible  (e) heat flows from hot substance to cold substance.

Last Answer : Answer : c

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Description : Which of the following occurs in a reversible polytrophic process?  a. Enthalpy remains constant  b. Internal energy does not change  c. Some heat transfer occurs  d. Entropy remains constant

Last Answer : Some heat transfer occurs

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Description : What happens to the internal energy of water at reference temperature where enthalpy is zero?  a. Becomes negative  b. Becomes positive  c. Remains constant  d. Cannot be defined

Last Answer : Becomes negative

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Description : What is the measure of the energy that is no longer available to perform useful work within the current environment?  a. enthalpy  b. entropy  c. internal energy  d. latent heat

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Heat engine deriving its power from the energy liberated by the explosion of a mixture of some hydrocarbon, in a gaseous or vaporized form.  a. Dual Combustion Engine  b. Internal Combustion Engine  c. External Combustion Engine  d. None of the above

Description : Heat engine deriving its power from the energy liberated by the explosion of a mixture of some hydrocarbon, in a gaseous or vaporized form.  a. Dual Combustion Engine  b. Internal Combustion Engine  c. External Combustion Engine  d. None of the above

Last Answer : Internal Combustion Engine

Find the change in internal energy of 5 lb. of oxygen gas when the temperature changes from 100 ˚F to 120 ˚F. CV = 0.157 BTU/lbm-˚R  A.14.7 BTU  B.15.7 BTU  C. 16.8 BTU  D. 15.9 BTU Formula: U= mcv T

Description : Find the change in internal energy of 5 lb. of oxygen gas when the temperature changes from 100 ˚F to 120 ˚F. CV = 0.157 BTU/lbm-˚R  A.14.7 BTU  B.15.7 BTU  C. 16.8 BTU  D. 15.9 BTU Formula: U= mcv T

Last Answer : 15.7 BTU

A 10m^3 vessel initially contains 5 m^3 of liquid water and 5 m^3 of saturated water vapor at 100 kPa. Calculate the internal energy of the system using the steam table.  A. 5 x10^5 kJ  B. 8x10^5 kJ  C. 1 x10^6 kJ  D. 2 x10^6 kJ Formula: fromthe steamtable vƒ = 0.001043 m^3 / kg vg = 1.6940 m^3 / kg u ƒ= 417.3 kJ/kg ug= 2506kJ/kg formula: Mvap = V vap/vg M liq = Vliq/ vƒ u =uƒM liq + ug M vap

Description : A 10m^3 vessel initially contains 5 m^3 of liquid water and 5 m^3 of saturated water vapor at 100 kPa. Calculate the internal energy of the system using the steam table.  A. 5 x10^5 kJ  B. 8x10^5 kJ  C. 1 ... 3 kJ/kg ug= 2506kJ/kg formula: Mvap = V vap/vg M liq = Vliq/ vƒ u =uƒM liq + ug M vap

Last Answer : 2 x10^6 kJ

Steam at 1000 lbf/ft^2 pressure and 300˚R has specific volume of 6.5 ft^3/lbm and a specific enthalpy of 9800 lbf-ft/lbm. Find the internal energy per pound mass of steam.  A.2500 lbf-ft/lbm  B.3300 lbf-ft/lbm  C.5400 lbf-ft/lbm  D.6900 lbf-ft/lbm Formula: h= u+ pV u= h– pV

Description : Steam at 1000 lbf/ft^2 pressure and 300˚R has specific volume of 6.5 ft^3/lbm and a specific enthalpy of 9800 lbf-ft/lbm. Find the internal energy per pound mass of steam.  A.2500 lbf-ft/lbm  B.3300 lbf-ft/lbm  C.5400 lbf-ft/lbm  D.6900 lbf-ft/lbm Formula: h= u+ pV u= h– pV

Last Answer : 3300 lbf-ft/lbm

If a system absorbs 500 cal of heat at the same time does 400J of work, find the change in internal energy of the system.  a. 1400 J  b. 1700 J  c. 1900 J  d. 1500 J

Description : If a system absorbs 500 cal of heat at the same time does 400J of work, find the change in internal energy of the system.  a. 1400 J  b. 1700 J  c. 1900 J  d. 1500 J

Last Answer : 1700 J

Which of the following does not determine the amount of internal energy an object has?  a. temperature  b. amount of material  c. type of material  d. shape of the object

Description : Which of the following does not determine the amount of internal energy an object has?  a. temperature  b. amount of material  c. type of material  d. shape of the object

Last Answer : shape of the object

The energy associated with individual molecules in a gas, liquid or solid.  a. Specific Energy  b. Molecular Energy  c. Internal Energy  d. Phase Energy

Description : The energy associated with individual molecules in a gas, liquid or solid.  a. Specific Energy  b. Molecular Energy  c. Internal Energy  d. Phase Energy

Last Answer : Internal Energy

What is the internal energy associated with the phase of a system called?  A. Chemical energy  B. Latent energy  C. Phase energy  D. Thermal energy

Description : What is the internal energy associated with the phase of a system called?  A. Chemical energy  B. Latent energy  C. Phase energy  D. Thermal energy

Last Answer : Latent energy

What type of system energy is related to the molecular structure of a system?  A. Macroscopic form of energy  B. Microscopic form of energy  C. Internal energy  D. External energy

Description : What type of system energy is related to the molecular structure of a system?  A. Macroscopic form of energy  B. Microscopic form of energy  C. Internal energy  D. External energy

Last Answer : Microscopic form of energy

In an isothermal process,  A. there is no change in temperature  B. there is no change in enthalpy  C. there is no change in internal energy  D. all of these

Description : In an isothermal process,  A. there is no change in temperature  B. there is no change in enthalpy  C. there is no change in internal energy  D. all of these

Last Answer : Answer: D

The sum of internal energy (U) and the product of pressure and volume (p.v) is known as  A. workdone  B. entropy  C. enthalpy  D. none of these

Description : The sum of internal energy (U) and the product of pressure and volume (p.v) is known as  A. workdone  B. entropy  C. enthalpy  D. none of these

Last Answer : Answer: C

There is no change in internal energy in an isothermal process.  A. Correct  B. Incorrect

Description : There is no change in internal energy in an isothermal process.  A. Correct  B. Incorrect

Last Answer : Answer: A

When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.  A.True  B.False

Description : When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.  A.True  B.False

Last Answer : Answer: A

An adiabatic process is one in which  A.no heat enters or leaves the gas  B.the temperature of the gas changes  C.the change in internal energy is equal to the mechanical workdone  D.all of the above

Description : An adiabatic process is one in which  A.no heat enters or leaves the gas  B.the temperature of the gas changes  C.the change in internal energy is equal to the mechanical workdone  D.all of the above

Last Answer : Answer: D

During throttling process  (a) heat exchange does not take place  (b) no work is done by expanding steam  (c) there is no change of internal energy of steam  (d) all of the above  (e) entropy decreases.

Description : During throttling process  (a) heat exchange does not take place  (b) no work is done by expanding steam  (c) there is no change of internal energy of steam  (d) all of the above  (e) entropy decreases.

Last Answer : Answer : d

First law of thermodynamics  (a) enables to determine change in internal energy of the system  (b) does not help to predict whether the system will or not undergo a change  (c) does not enable to determine change in entropy  (d) provides relationship between heat, work and internal energy  (e) all of the above.

Description : First law of thermodynamics  (a) enables to determine change in internal energy of the system  (b) does not help to predict whether the system will or not undergo a change  (c) does not enable ... entropy  (d) provides relationship between heat, work and internal energy  (e) all of the above.

Last Answer : Answer : e

Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant  (a) pressure  (b) temperature  (c) volume  (d) internal energy  (e) entropy.

Description : Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant  (a) pressure  (b) temperature  (c) volume  (d) internal energy  (e) entropy.

Last Answer : Answer : c

Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant  (a) pressure  (b) temperature  (c) volume  (d) internal energy  (e) entropy.

Description : Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant  (a) pressure  (b) temperature  (c) volume  (d) internal energy  (e) entropy.

Last Answer : Answer : a

In an isothermal process, the internal energy  (a) increases  (b) decreases  (c) remains constant  (d) first increases and then decreases  (e) first decreases and then increases.

Description : In an isothermal process, the internal energy  (a) increases  (b) decreases  (c) remains constant  (d) first increases and then decreases  (e) first decreases and then increases.

Last Answer : Answer : c

First law of thermodynamics furnishes the relationship between  (a) heat and work  (b) heat, work and properties of the system  (c) various properties of the system  (d) various thermodynamic processes  (e) heat and internal energy.

Description : First law of thermodynamics furnishes the relationship between  (a) heat and work  (b) heat, work and properties of the system  (c) various properties of the system  (d) various thermodynamic processes  (e) heat and internal energy.

Last Answer : (b) heat, work and properties of the system

A gas is compressed in a cylinder by a movable piston to a volume onehalf its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be  (a) 300 Nm  (b) 300,000 Nm  (c) 30 Nm  (d) 3000 Nm  (e) 30,000 Nm.

Description : A gas is compressed in a cylinder by a movable piston to a volume onehalf its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be  (a) 300 Nm  (b) 300,000 Nm  (c) 30 Nm  (d) 3000 Nm  (e) 30,000 Nm.

Last Answer : Answer : b

For which of the following substances, the internal energy and enthalpy are the functions of temperature only  (a) any gas  (b) saturated steam  (c) water  (d) perfect gas  (e) superheated steam.

Description : For which of the following substances, the internal energy and enthalpy are the functions of temperature only  (a) any gas  (b) saturated steam  (c) water  (d) perfect gas  (e) superheated steam.

Last Answer : Answer : d