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ME 200 FINAL Exam Questions and Answers 100% Pass

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ME 200 FINAL Exam Questions and Answers 100% Pass How do we treat a wall in entropy generation problems? - ANS Linear temperature gradient OR when heat in and heat out are the same (no mass flow, work or energy accumulation), you can treat the wall as having uniform temperature (average of boundary temperatures) What can we assume if a process is isentropic? - ANS Nothing-adiabatic and reversible imply isentropic but not the other way around; however, any two imply the other (i.e isentropic and adiabatic imply reversible). We can deduce this from the second law Thermal efficiency ___________ with increasing compressor ratio (V1/V2) - ANS Increases Enthalpy simplification - ANS h=u+pv What does an internal combustion (IC) engine cycle look like? - ANS Piston-cylinder device 1 bar = ________ kPa - ANS 100 R constant in good units - ANS 0.287 Incompressible - ANS Flow in which specific volume is constant

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ME 200 FINAL Exam Questions and
Answers 100% Pass




How do we treat a wall in entropy generation problems? - ANS Linear temperature gradient
OR when heat in and heat out are the same (no mass flow, work or energy accumulation), you
can treat the wall as having uniform temperature (average of boundary temperatures)



What can we assume if a process is isentropic? - ANS Nothing-adiabatic and reversible imply
isentropic but not the other way around; however, any two imply the other (i.e isentropic and
adiabatic imply reversible). We can deduce this from the second law



Thermal efficiency ___________ with increasing compressor ratio (V1/V2) - ANS Increases



Enthalpy simplification - ANS h=u+pv



What does an internal combustion (IC) engine cycle look like? - ANS Piston-cylinder device



1 bar = ________ kPa - ANS 100



R constant in good units - ANS 0.287



Incompressible - ANS Flow in which specific volume is constant

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