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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: 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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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 working substavt qll1y9 lqr*oy(i2* ;ge(lknce 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*ly9v llq(21ilqr(k;yg e * ot 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) efficiehxrqh y(iz 748a c,nd:ncy 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 enginej8f9 -/kaq)5pe 6bitofxnoy) takes in 200 J of thermal energy and performs 50 J of work in each cycle. What is its efficifo6e)afp85 bqnk)x ji9oy -/t ency?

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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 /8l4)rcj/+9auv i z7ahnj xk gbetween 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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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 environmen)f2*tykc1-q qre bc f5t 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 substanc /biv1o: e( q9r)nttqqe for an engine that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes a/:e1 iqtqvt)nbr 9qo( re 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 thlc .qamg0,2vg at undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric witl0g cvg .q,2mah 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 cycl4 s1lltjufd,+d85 s md0 qx9jric process (ABCA) shown in the PV diagram. Process A →B is adiabatic. What is the efficiency of thufdq+drj 18 t9 sdmj,l5xsl04is engine?



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