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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03.47: A monatomic idealmc5--vjljaf h j65(o tb2p gu4 gas is used as the working substance for the 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 → B, there are 400 J of work done by the gas on the surroundings. How much heat is expelled by the gas during process C 6( vo tmacu55-j-gjlp4j hb2f→ D?

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95.24: The theoretical (Carnot) *)cvb hfky t+*efficiency of a heat engine operating between $600^{\circ}C$ and $100^{\circ}C$ is:

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98.07: A heat engine takes in 200 do 9nu/f btv12J of thermal energy and performs 50 J of work in each cycle. What is its efficiency?ndofvt9bu /1 2

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13.41: An engine operates td+.mx b kwbnx4v hk,:.p c(n6between 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 outside environment rjs s /0c :yi-7ruynbv0o qc-1z8 4bvldyn/l;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 th 9gvl-, dwfadml (sk42u:zbk *e working substance for an engine that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaridu(2s :dkb9 wf k-4mvl,z*galc 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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12.44: A monatomic ideal gas is the working substance for a refriger5l gq qtt ru()jr,zj2*ator that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric wqg quj(jtl,r)5r 2 *tzith 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 undergoes the reveg wyj9r+5q 6 1+zluvb-n 5mvzursible cyclic process (ABCA) shown in the PV diagram. Process A →B is adiabatic. What is the efficiency of this engine? 1z95luzqv+ bw5 n6vmuj y-gr+