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



 作者: admin   总分: 8分  得分: _____________

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

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1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  03.47: A monatomic ideal gas is used as the w9 blye0wn2w/h9::e nd ijav u+8rkbw: orking 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. D d9b:l2ww/:8e nw ny0a9+urh: ej kviburing 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 → 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 f:y6 (i 8c4 drxqnn.zl1,wkesengine operating between $600^{\circ}C$ 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 takes in 200 J of thermal lo+z s+c (lflnv:1ta 4energy and performs 50 J of work in each cycle. Wz4lt l+ao:ls cf1n v(+hat 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 tt+. vbl15*3jl*xgu:mwe gon 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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5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  06.44: A refrigerator must ope, ljm 1vt*i(jf xmoytc.yf9p7 4(m4 ttrate when the outside 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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6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  10.49: A monatomic ideal gas is the working .frpacy1dwm3 c n3:ij4 c:k2qsubstance for an engine that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric with pressc1 djyrck 3mf a34icw:q:.n 2pures 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 subsq:-qb6zt+ 4:y dmdm hytance for a refrigerator that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all iso4hm ::qdq+mt- z6bdy ychoric or isobaric with 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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8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  17.50: A monatomic ideal gas undergoes the reversible cyclic process (ABCA) showmaz2 2qdorjf.o8c.;ih )e/*cj pm(kq n in the PV diagram. Process A →B is adia2ea.o; jfcp (ijo* hq.qrmzc/ 28kd)mbatic. What is the efficiency of this engine?



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