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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 a8cqy2 )7she vys the working substance for the Carnot cycle shown in the figure. Processes A → B and C → D are isothermalsvec h8 y2)7qy, 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 theoretica t+- .alh*bwqz( n1vdyl (Carnot) 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 ;ktcvqg-u59 u200 J of thermal energy and performs 50 J of work in each cycle. What is its eftg ucq9 -v;k5uficiency?

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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 te2hj )hp c8nfog.:oh 9sxdqw7/mperature 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 txh *zo(l6v9 t3w )ecalhe 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 en8m mr: u03lhpqcu-4h 4w3 xvypgine that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric with pressuresh8 xu-c0uv4pp3 qy3mr4w:mlh 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 substanc/ 3trz;q yaq(pkm3vb)9m u2dez rq r//e for a refrigerator that undergoes the cyclic process (ABCDA) shownp/z)q3yez/; q /(3ktaudq2 rm rr9mbv 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 gas une yr*, aeqp,9h38ohd: .tdgoj dergoes the reversible cyclic process (ABCA) shown in the PV diagram. Process A →B is adiabatic. What is the efficiency of this enghoh,. :r93 adyge pqd,oe*t8j ine?



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