1. Which of the following energy flow dia- gram correctly describes a heat engine that op- erates by taking one mole of a diatomic ideal gas through the cycle 1-2-3-4-1 as shown in the pV diagram below. Notr: 1+2 nd 3+4 (7, = 600K) diabatie processes (T.- 400X) (7= 300K) 1 (T, - 200K) Volume (m') A. В. с. D. Hot Reservoir Hot Reservoir Hot Reservoir Hot Reservoir 6.24k 6.24 k 8.73 8.73 5.82 k 2.08 k 4.16 k 2.91 k 4.16k 2.08 2.91 k 5.82 k Cold Reservoir Cold Reservoir Cold Reservoir Cold Reservoir 2. The figure shows a cyclic process where a diatomic ideal gas undergoes an isochoric pro- cess from a to b, an isobaric process from 6 to c, an iso- choric process from e to d and finally another isobaric process from d back to a. Let p = 2po. V = 2V. What is the efficiency of the cycle? Vo. Po A. 75.0% В. 37.1% C. 15.4% Volume D. 10.5% Pressure

1. Which of the following energy flow dia- gram correctly describes a heat engine that op- erates by taking one mole of a diatomic ideal gas through the cycle 1-2-3-4-1 as shown in the pV diagram below. Notr: 1+2 nd 3+4 (7, = 600K) diabatie processes (T.- 400X) (7= 300K) 1 (T, - 200K) Volume (m') A. В. с. D. Hot Reservoir Hot Reservoir Hot Reservoir Hot Reservoir 6.24k 6.24 k 8.73 8.73 5.82 k 2.08 k 4.16 k 2.91 k 4.16k 2.08 2.91 k 5.82 k Cold Reservoir Cold Reservoir Cold Reservoir Cold Reservoir 2. The figure shows a cyclic process where a diatomic ideal gas undergoes an isochoric pro- cess from a to b, an isobaric process from 6 to c, an iso- choric process from e to d and finally another isobaric process from d back to a. Let p = 2po. V = 2V. What is the efficiency of the cycle? Vo. Po A. 75.0% В. 37.1% C. 15.4% Volume D. 10.5% Pressure

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter15: Thermodynamics

Section: Chapter Questions

Problem 13CQ: Which cyclical process represented by the two closed loops, ABCFA end ABDEA, on the PV diagram in...

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