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Fundamentals of Engineering Review Session: Thermodynamics

Fundamentals of Engineering Review Session: Thermodynamics. Martin S. High, P.E., Ph.D., J.D. Associate Professor School of Chemical Engineering Thursday, September 8, 2005. General Comments. These notes are available at http://mhigh.okstate.edu

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Fundamentals of Engineering Review Session: Thermodynamics

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  1. Fundamentals of Engineering Review Session: Thermodynamics Martin S. High, P.E., Ph.D., J.D. Associate Professor School of Chemical Engineering Thursday, September 8, 2005

  2. General Comments • These notes are available at http://mhigh.okstate.edu • Solve problems, solve problems, solve problems. • Then solve some more problems. • I highly recommend purchasing the sample problems booklet. See NCEES web site. FE Thermodynamics Review – M. S. High

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  7. Sample Question #1 25. An insulated tank contains half liquid and half vapor by volume in equilibrium. The release of a small quantity of the vapor without the addition of heat will cause (A) evaporation of the liquid in the tank (B) superheating of the vapor in the tank (C) a rise in temperature (D) an increase in enthalpy FE Thermodynamics Review – M. S. High

  8. Sample Question #2 26. The heat transfer during an adiabatic process is (A) reversible (B) irreversible (C) dependent on temperature (D) zero FE Thermodynamics Review – M. S. High

  9. Sample Question #3 27. An isentropic process is one which (A) is adiabatic but not reversible (B) is reversible but not adiabatic (C) is adiabatic and reversible (D) occurs at constant pressure and temperature FE Thermodynamics Review – M. S. High

  10. Sample Question #3 FE Thermodynamics Review – M. S. High

  11. Sample Question #4 28. Pure water is boiling in an open pan at atmospheric pressure. Salt at a temperature equal to that of the boiling water is added. immediately after the salt dissolves, which of the following will most likely occur? (A) The boiling ceases. (B) The temperature of the solution drops by 10°C. (C) The water ionizes. (D) The entire mass becomes solid. FE Thermodynamics Review – M. S. High

  12. Sample Question #5 29. When the pressure of an ideal gas is doubled while the absolute temperature is halved, the volume is (A) quadrupled (B) doubled (C) halved (D) quartered FE Thermodynamics Review – M. S. High

  13. Sample Question #6 6. A uniformly dense block of a certain material has a volume of 0.12 m3. If the block displaces 0.055 m3 of water when placed on water, the specific gravity of the material is most nearly A) 0.46 B) 1.0 C) 3.2 D) 2.2 FE Thermodynamics Review – M. S. High

  14. Sample Question #7 15. A cylinder fitted with a weightless, frictionless piston contains a mass M of air at temperature T1, volume V1, and pressure P1. Heat is added, first with the volume constant and then with the pressure constant, until the air in the cylinder has a temperature T2, a volume V2, and a pressure equal to the ambient pressure Pa. The specific heat of air at constant pressure is CP, and the specific heat of air at a constant volume is Cv. The heat transferred to the air during these processes is • MCv(T2 - T1) • MCp(T2 - T1) + Pa(V2 - V1) • MCv(T2 - T1) + Pa(V2 - V1) • MCp(T2 - T1) FE Thermodynamics Review – M. S. High

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