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习题练习：Efficiency, coefficient of performance and Carnot Cycle
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 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 id3voe:)f iqcmuktqkg91; q70n eal 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 mui:e7u qkogf1 ;t0m qk)q93vcnch 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 (Ca.4 l , ;4dofeofnz+yrcrnot) efficiency of a heat engine 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 energy and performs 50 J of *dhw hoq jlv6: d*m*vf/rg4j-work in eachj md *l4d *hg*fjv/6owhvq:-r 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 tempfy x)* yavy82 o.mojt,knl5;zerature 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 thn:qlqet(27uy eyz, l: e 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 substance for an o *j0p )qaa wr:z.qo3lengine that undergoes the cyclic process (ABCDA) sq*rloq w:3)aa .ojz p0hown 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 substance for a refrigerator t8vzx a 2ew* 92 qvl5nf5q3*0(vt qri ftxr9efzhat undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all is(f2z3v9x vqf85w iv*lt zta f0n2*re95 qrqxeochoric 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 cyclixbl5 k s u9av:/(ljj(ihai7 c1c process (ABCA) shown in the PV diagram. Process A →B is adiabatic. What is thl7cs /u95ak h( vi(ajb1l:x ije efficiency of this engine?



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