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

1#

03.47: A monatomic ideal gas is used as the working substan x2h h66v,i/ tgn+pqgpce 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 h6v,xpig ghqt+h6np 2/eat is expelled by the gas during process C → D?

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2#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

95.24: The theoretical (Carnot) efficiency of a heat engine operating gsq5c)r4at xx2 e54 jebetween $600^{\circ}C$ and $100^{\circ}C$ is:

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3#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

98.07: A heat engine taks b zwk3wbd-sr5 t2a j4.4o.yaes in 200 J of thermal energy and performs 50 J of work in4zds-2.ak btb.jwsao3ry 54w each cycle. What is its efficiency?

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4#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

13.41: An engine operates between a low temperaturea- 1o;ta5jw) *vu aujm 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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5#

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 envi:vifz6 9*: rmfes 2kkvronment 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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本习题练习题目来源于无忧得胜-网上国际课程 (https://5edu.win)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
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6#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

10.49: A monatomic idve8 y44ga6 ktbeal gas is the working substance for an engine that undergoes the cyclic process (ABCDA) show8gyvt6a 4be k4n 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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7#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

12.44: A monatomic ideal gas is the working s 1;.iubmt aie8ubstance for a refrigerator that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric with pr ;au.8e1bmitiessures 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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8#

单选题 ( 1.0 分) 切至整卷模式搜藏此题

17.50: A monatomic ideal gas undergoebq5y k9ot 0-exmi cv38s the reversible cyclic process (ABCA) shown in the PV diagram. m-9ocq85 3kx0vibeyt Process A →B is adiabatic. What is the efficiency of this engine?

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