Efficiency, coefficient of performance and Carnot Cycle - 无忧得胜-网上国际课程 (5edu.win)

?作业考试练习?美国物理杯赛(Physics Bowl)?Efficiency, coefficient of performance and Carnot Cycle

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习题练习：Efficiency, coefficient of performance and Carnot Cycle

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答题人: 游客未登录开始时间: 24年08月05日 13:25 切换到: 整卷模式

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03.47: A monatomic ideal gas is used as the working substance for them5:0h j()yg6d(v yie6xtvr o y Carnot cycle shown in the figure. Processes A → B and C → D are isothermal, while processes B → C and D → A are adiabatic. During process A → tx y65(mrjy hve0d (:)gi6yvoB, there are 400 J of work done by the gas on the surroundings. How much heat is expelled by the gas during process C → D?

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95.24: The theoretical (Carnot) efficiency of a heat engine operv:i v2,lo1md 29zlvrz ating between $600^{\circ}C$ and $100^{\circ}C$ is:

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98.07: A heat engine takes in 200 J of thermal energy and performs 50 J of wv c2jpw3)ybqqx2* w;work in each cycle. What is its effw22)cp *w 3vxqw qyb;jiciency?

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13.41: An engine opertey504yoycewg+ u7) xates between a low temperature of $273^{\circ}C$ and a high temperature of $546^{\circ}C$. What is the maximum theoretical efficiency of this engine?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

06.44: A refrigerator must operate when the outr ,xf o.mqhdv y97.3.jnz+rkh side environment is at $22^{\circ}C$ to maintain an environment at $2^{\circ}C$ inside the refrigerator. During one cycle, the refrigerator expels 1200 J of energy to the outside environment while 400 J of work were done. What is the coefficient of performance of this refrigerator?

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10.49: A monatomic ideal gas is the working substanc tegf )rd2wq+b mqz /q/i,ny51e for an engine that undergoes the cyclic process (ABCDA) sfidgre2 wq/ z/qtb m)y5nq1,+hown in the PV diagram. The processes are all isochoric or isobaric with pressures between $P_0$ and $2P_0$ and volumes between $V_0$ and $1.5V_0$ . What is the efficiency of this engine?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.44: A monatomic ideal gas is the wor8 4.cxe t aa2wkw()lgiking substance for a refrigerator that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric w(e x.lw 2cgw )k84aaitith pressures between $P_0$ and $2P_0$ and volumes between $V_0$ and 2$V_0$ . What is the coefficient of performance for this refrigerator?

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17.50: A monatomic ideal gas undergoefdc75c1ho ad n. ,ggdl-a4o 3zs the reversible cyclic process (ABCA) shown in the ggo zo1chf 5 d nl,43ad-7.cdaPV diagram. Process A →B is adiabatic. What is the efficiency of this engine?