What states that the thermal efficiencies of all reversible heat engines operating between the same two reservoirs are the same and that no heat engine is more efficient than a reversible one operating between the same two reservoirs?
AEricson principle
BCarnot principle
COtto principle
DStirling principle
#202📘 reviewer_appEasy
Water boils when:
Aits saturated vapor pressure equals the atmospheric pressure
Bits vapor pressure equals 76 cm of mercury
Cits temperature reaches \( 212^\circ C \)
Dits vapor pressure is 1 g per cm²
#203📘 reviewer_appEasy
Which of the ff is standard temperature and pressure (STP) ?
A\( 0^\circ C \) and 1 atm
B32ºF and 0 pressure
C0ºK and 1 atm
D0ºF and 0 pressure
#204📘 reviewer_appEasy
What is the value of work done for a closed, reversible isometric system?
Azero
Bpositive
Cnegative
Deither positive or negative
#205📘 reviewer_appEasy
"At constant temperature, the volume of a gas is inversely proportional to the pressure" This is known as _________
ABoyle's law
BCharle's law
CGay-lussac law
DIdeal gas law
#206📘 reviewer_appEasy
Which of the ff is the mathematical representation of the charle's law?
AV1/V2 = P2/P1
BV1/T1 = V2/T2
CV1/T2 = V2/T1
DV1/V2 = sqrt(P2/P1)
#207📘 reviewer_appEasy
Which of the ff is the formula for thermal resistance?
Athickness of material / thermal conductivity of material
B2*thickness of material / thermal conductivity of material
Cthickness of material / 2*thermal conductivity of material
Dthickness of material x thermal conductivity of material
#208📘 reviewer_appEasy
For heat engine operating between two temperatures (T1>T2), what is the maximum efficiency attainable?
AEff = 1 - T2/T1
BEff = 1 - T1/T2
CEff = T2 - T1
DEff = 1 - (T2/T1)²
#209📘 reviewer_appEasy
Which one is the correct relation between energy efficiency ratio EER and coefficient of performance COP ?
AEER = 2.34COP
BEER = 3.24COP
CEER = 3.42COP
DEER = 4.23COP
#210📘 reviewer_appEasy
The coefficient of performance is the ratio of:
Apower consumption in watts and heat absorbed per hour
Bheat absorbed per hour and the power consumption in watts
Cwork required and the absorbed heat
Dabsorbed heat and the work required
#211📘 reviewer_appEasy
What predicts the approximate molar specific heat at high temperatures from the atomic weight?
AThird law of thermodynamics
BLaw of Dulong and Petit
CMollier diagram
DPressure-enthalpy diagram
#212📘 reviewer_appEasy
Considering one mole of any gas, the equation of state of ideal gases is simply the ______ law
AGay-Lussac
BDulong and Petit
CAvogadro's
DHenry's
#213📘 reviewer_appEasy
An ideal gas whose specific heats are constant is called __________
Aperfect gas
Bnatural gas
Cartificial gas
Drefined gas
#214📘 reviewer_appEasy
What are the assumptions of the kinetic gas theory?
AGas molecules do not attract each other
BThe volume of the gas molecules is negligible compared to the volume of the gas
CThe molecule behave like hard spheres
Dall of these
#215📘 reviewer_appEasy
"The total volume of a mixture of nonreacting gases is equal to the sum of the partial volumes" This statement is known as _____________
ALaw of Dulong and Petit
BMaxwell-Boltzmann law
CAmagat's law
DAvogadro's law
#216📘 reviewer_appEasy
What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled?
ARankine coefficient
BKelvin coefficient
CMaxwell-Boltzmann coefficient
DJoule-Thomson coefficient
#217📘 reviewer_appEasy
The low-temp reservoir of the heat reservoirs is known as ________
Asource reservoir
Bheel reservoir
Ctoe reservoir
Dsink reservoir
#218📘 reviewer_appEasy
What refers to the minimum temperature at which combustion can be sustained?
ABurn temperature
BKindle temperature
CSpark temperature
DIgnition temperature
#219📘 reviewer_appEasy
What law predicts the dew point of moisture in the fuel gas?
ADalton's law
BLaw of Dulong and Petit
CRingelman law
DAmagat's law
#220📘 reviewer_appEasy
What law states that one energy form can be converted without loss into another form?
