Energy balance
8 practice questionsEngineering ThermodynamicsStep-by-step solutions
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1
The enthalpy H of a system is defined as:
A.U − PV
B.U + PV
C.PV/U
D.U × PV
2
The first law of thermodynamics for a closed system is ΔU = Q − W. What does Q represent?
A.Heat added to the system
B.Work done by the system
C.Change in entropy
D.Mass flow
3
The zeroth law of thermodynamics provides the basis for measuring:
A.Pressure
B.Temperature
C.Volume
D.Entropy
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