What law asserts that energy has quality as well as quantity?
AFirst law of thermodynamics
BSecond law of thermodynamics
CThird law of thermodynamics
DZeroth law of thermodynamics
ESAS · Question Bank
Thermodynamics
274 of 308 questions match · page 14 of 14. Answer in your head first, then check the solution.
What law provided an absolute reference point for the determination of entropy?
AZeroth law of thermodynamics
BFirst law of thermodynamics
CSecond law of thermodynamics
DThird law of thermodynamics
The term “enthalpy” comes from Greek word “enthalpen” which means ____
AWarm
BHot
CHeat
DCold
In refrigerator, the quantity 288,000 BTU / day is called
ATON
BVapor heat
CThroughput
DFreon number
Which of the following is not a control volume?
AInsulated tank
BCar radiator
CCompressor
DTurbine
Which of the following statements about work for a quasiequilibrium process is incorrect?
AThe differential of work is inexact
BWork is the area under a P-T diagram
CWork is a path function
DWork is always zero for a constant-volume process
Kelvin-Planck’s law deals with
AConservation of work
BConservation of heat
CConversion of work into heat
DConversion of heat into work
Which one of the following is standard temperature and pressure (STP)?
A0 K and one atmosphere pressure
B0°F and zero pressure
C32°F and zero pressure
D0°C and one atmosphere
The point that connects the saturated liquid to the saturated vapour line is called the
ATriple point
BCritical point
CSuperheated point
DCompressed liquid point
Which work mode is a nonequilibrium work mode?
ACompressing a spring
BTransmitting torque with a rotating shaft
CEnergizing an electrical resistor
DCompressing a gas in a cylinder
During an adiabatic, internally reversible process, what is true about the change in entropy?
AIt is always zero
BIt is always less than zero
CIt is always greater than zero
DIt is temperature-dependent
Select the incorrect statement relating to a carnot cycle.
AThere are two adiabatic processes
BThere are two constant pressure processes
CEach process is a reversible process
DWork occurs on all four processes
Which of the following laws of thermodynamics leads to the definition of entropy?
AZeroth law
BFirst law
CSecond law
DThird law
What is the origin of the energy conservation equation used in flow systems?
ANewton’s first law of motion
BNewton’s second law of motion
CThe first law of thermodynamics
DThe second law of thermodynamics