Description : Who coined the word energy? a. James Joule b. Thomas Young c. Rudolf Diesel d. Kelvin
Last Answer : Thomas Young
Description : Who coined the word “energy” in 1807? A. William Rankine B. Rudolph Clausius C. Kelvin D. Thomas Young
Description : What statement of the second law of thermodynamics states that it is impossible to build a device that operates in a cycle and produces no effect other than the transfer of heat from a lower- ... A. Kelvin-Planck statement B. Clausius statement C. Kelvin statement D. Rankine statement
Last Answer : Clausius statement
Description : The term “thermodynamics” was first used in 1849 in the publication of a A. Rudolph Clausius B. William Rankine C. Kelvin D. Thomas Savery
Last Answer : Kelvin
Description : A temperature scale whose zero point is absolute zero, the temperature of “0” entropy at which all molecular motion stops. a. Celsius b. Fahrenheit c. Kelvin d. Rankine
Description : Entropy is measured in ______. A. Joule/Kelvin B. Joule-Meter/Kelvin C. Meter/Kelvin D. Newton/Kelvin
Last Answer : Joule/Kelvin
Description : The theory that heat consisted of a fluid, which could be transferred from one body to another, but not “created” or “destroyed”. a. Clausius Theorem b. Caloric Theory c. Joules Law d. Newton’s Law of cooling
Last Answer : Caloric Theory
Description : Who is the father of thermodynamics? a. Lazare Carnot b. Sadi Carnot c. William Thompson d. Rudolf Classius
Last Answer : Sadi Carnot
Description : It is impossible for any process to have as its sole result the transfer of heat from a cooler to a hotter body a. Carnot’s statement b. Clausius statement c. Rankine statement d. Gauss statement
Description : Which statement of the second law of thermodynamics states that no heat engine can have a thermal efficiency of 100 percent? A. Kelvin-Planck statement B. Clausius statement C. Kevin statement D. Rankine statement
Last Answer : Kelvin-Planck statement
Description : Developed the Fahrenheit scale a. Gabriel Daniel Fahrenheit b. Daniel Gabriel Fahrenheit c. Gabriel Danelle Fahrenheit d. Danelle Gabriel Fahrenheit
Last Answer : Gabriel Daniel Fahrenheit
Description : _____________ is the base unit of thermodynamics temperature. a) Celsius b) Fahrenheit c) Kelvin d) None of the above
Description : It is generally accepted as a law of nature that although one may closely approach 0 Kelvin it is impossible actually to reach it. a. First Law of thermodynamics b. Second Law of thermodynamics c. Third Law of thermodynamics d. Zeroth Law of thermodynamics
Last Answer : Third Law of thermodynamics
Description : If the Kelvin temperature of an ideal gas is doubled, what happens to the rms speed of the molecules in the gas? a. it increases by a factor of square root of 2 b. it increases by a factor of 2 c. it increases by factor of 4 d. none of the above
Last Answer : it increases by a factor of square root of 2
Description : The volume of an ideal gas is directly proportional to its a. pressure b. Celsius temperature c. Kelvin temperature d. Fahrenheit temperature
Last Answer : Kelvin temperature
Description : Convert the change of temperature from 20˚C to 30˚C to Kelvin scale. a. 10 K b. 293 K c. 303 K d. 273 K
Last Answer : 10 K
Description : What is the Si unit for temperature? a. Kelvin b. Celsius c. Fahrenheit d. Rankine
Description : What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled? A. Rankine coefficient B. Kelvin coefficient C. Maxwell-Boltzmann coefficient D. Joule-Thomson coefficient
Last Answer : Joule-Thomson coefficient
Description : Which of the following is standard temperature and pressure (STP)? A. 0 degree Celsius and one atmosphere B. 32 degree Fahrenheit and zero pressure C. 0 degree Kelvin and one atmosphere D. 0 degree Fahrenheit and zero pressure
Last Answer : 0 degree Celsius and one atmosphere
Description : What temperature scale is identical to the Kelvin scale? A. Ideal gas temperature scale B. Ideal temperature scale C. Absolute gas temperature scale D. Triple point temperature scale
Last Answer : Ideal gas temperature scale
Description : What is the thermodynamic temperature scale in the English system? A. Kelvin scale B. Celsius scale C. Fahrenheit scale D. Rankine scale
Last Answer : Rankine scale
Description : What is the thermodynamic temperature scale in the SI system? A. Kelvin scale B. Celsius scale C. Fahrenheit scale D. Rankine scale
Last Answer : Kelvin scale
Description : Kelvin-Planck’s law deals with A. conservation of work B. conservation of heat C. conversion of heat into work D. conversion of work into heat
Last Answer : Answer: C
Description : When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called A. Zeroth law of thermodynamics B. First law of thermodynamics C. Second law of thermodynamics D. Kelvin Planck’s law
Last Answer : A. Zeroth law of thermodynamics
Description : According to Kelvin-Planck's statement of second law of thermodynamics, A. it is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work B. it ... other than the transfer of heat from a cold body to a hot body D. none of the above
Last Answer : Answer: A
Description : Kelvin Planck’s law deals with (a) conservation of heat (b) conservation of work (c) conversion of heat into work (d) conversion fo work into heat (e) conservation of mass.
Last Answer : Answer : c
Description : The unit of temperature in S.I. units is (a) Centigrade (b) Celsius (c) Fahrenheit (d) Kelvin (e) Rankine.
Last Answer : Answer : d
Description : Who coined the term latent heat? a. John Thompson b. Studey Baker c. Joe di Maggio d. Joseph Black
Last Answer : Joseph Black
Description : Which of the following laws of thermodynamic which leads to the definition of entropy? a. First law b. Second law c. Third law d. Law of conservation of energy
Last Answer : Second law
Description : As temperature goes to “0”, the entropy approaches a constant a. Zeroth Law of Thermodynamics b. First Law of Thermodynamics c. Second Law of Thermodynamics d. Third Law of Thermodynamics
Last Answer : Third Law of Thermodynamics
Description : A thermodynamic process in which entropy is conserved a. isentropic b. adiabatic c. isothermal d. polytropic
Last Answer : isentropic
Description : Which of the following is the other term used for enthalpy-entropy diagram? a. Enthalpy diagram b. Mollier diagram c. Steam diagram d. Entropy chart
Last Answer : Mollier diagram
Description : During the adiabatic process, which of the following is the change in entropy? a. zero b. greater than zero c. less than zero d. infinity
Last Answer : zero
Description : 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
Last Answer : Randomness or disorder
Description : The change that the system that undergoes from one equilibrium state to another is known as a. oath b. process c. enthalpy change d. entropy change
Last Answer : process
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
Description : Which law that states “Entropy of all perfect crystalline solids is zero at absolute zero temperature”? a. Zeroth law of thermodynamics b. First law of thermodynamics c. Second law of thermodynamics d. Third law of thermodynamics
Last Answer : Third law of thermodynamics
Description : What is the area under the curve on a temperature –entropy diagram? a. Heat b. work c. entropy d. volume
Last Answer : Heat
Description : What is the entropy of a pure substance at a temperature of absolute zero? a. unity b. zero c. infinity d. undefined
Description : What refers to the heat needed to change the temperature of the substances without changing its phases? a. Latent heat b. Sensible heat c. Specific heat d. entropy
Last Answer : Sensible heat
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
Last Answer : entropy
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
Description : The first law of thermodynamics is based on which of the following principles? a. Conservation of mass b. Conservation of energy c. Action and reaction d. The entropy-temperature relationship
Last Answer : Conservation of energy
Description : A state occurs in isentropic process a. The change in entropy is 0 b. The change in entropy is 1 c. The change in enthalpy is 0 d. The change in enthalpy is 1
Last Answer : The change in entropy is 0
Description : Regardless of the process, the change in enthalpy firm moles of ideal gas is a. Heat b. Enthalpy c. Entropy d. Density
Description : Composite property applicable to all fluids a. Entropy b. Enthalpy c. Specific Heat d. None of the above
Last Answer : Enthalpy
Description : Calculate the entropy of steam at 60psiawith a quality of 0.8 A. 0.4274 BTU/lbm-˚R B. 0.7303 BTU/lbm-˚R C. 1.1577 BTU/lbm-˚R D. 1.2172 BTU/lbm-˚R Formula: fromthe steamtable at 60 psia: sƒ = 0.4274 BTU/lbm-˚R sƒg = 1.2172 BTU/lbm-˚R) s = sƒ + x sƒg where x = is the quality
Last Answer : 1.1577 BTU/lbm-˚R
Description : The first law of thermodynamics is based on which of the following principles? a. conservation of mass b. the enthalpy-entropy relationship c. action – reaction d. conservation of energy
Last Answer : conservation of energy
Description : Twenty grams of ice at 0˚C melts to water at 0˚C. How much does the entropy of the 20g change in this process? a. 30.5 J/K b. 24.6 J/K c. 21.3 J/K d. 15.7 J/K
Last Answer : 24.6 J/K