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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 ideal gas is used as the wogc6czx*7s mpr6 9jvo7 rking substance for the Carnot cycle jxmcv6o*c s7r6z 9p7gshown 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 → 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 betwe nd q3xs z07kni1 rr5io.+ub,1avbqe,en $600^{\circ}C$ 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.ki pf/y. a8ut of work in each cycle. What is its . p. kfauyt/8iefficiency?

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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 f jcp/rd tt,:08) cjhla 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 whe4kbbda( 2a8 ybn 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 tgj 3z2tr8r7vy roc:. (+w * )zspivhnxhe working substance for an engine that undergoes the cyclic process (ABCDA) shown in the PV diagrv +sv n3 :)iwc ot*z2jrr.y xp7h8(grzam. 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 a4ppe. 8vio89dcn aq 2kel/0j f refrigerator that undergoes the cyclic prodjv8qp c0 n4p/.a29fe 8oli ekcess (ABCDA) shown 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 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 gah/;kj:az u7lp )vaiy*s undergoes the reversible cyclic process (ABCA) shown in the PV diagram. Process A →B is adiabatic. Wh:z/)y ulj;ipa7k ahv* at is the efficiency of this engine?



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