Efficiency, coefficient of performance and Carnot Cycle - 无忧得胜-网上国际课程 (5edu.win)

1#

03.47: A monatomic ideal gas i+mgoh xge; 12h pv*8ku dg3y:ps used as the working substance for the Carnot cycle shown in the figure. Procemy;v p3k*uepo+ 1x2hg dh :8ggsses 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)klfjwkoj slc31 th 7 u/4 mzbs:98(dd 9,go(tg 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 pbgb04 -9sver xi 6,;pnk2zrr merforms 50 J of work in ;ri4gvrsn,m bx-kbzep029 r 6each 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 betweed 2,ccw ;ci .pgbfd;z1ps 4gs0n 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 operate3rg6ofy4*t lum 0yk) l 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 substance .( 5kkyd6/( zxl1jrp hb uw x0ur26sak+qqjm -for an engine that undergoes the cyclic proc5(k - pjr.klkxj1qxdr(wm2u/sa0 hzuq66+y bess (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 $1.5V_0$ . 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 sd*i1n+ jyyqj hk( x9b;ubstance for a refrigerator that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isb*qyyij x n+9dh;j(1 kochoric 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 undergoe./q-u1hod xhmjj8c )gs the reversible cyclic process (ABCA) shown in the PV diagram. Process A →B is adiabatic. What is the effh ./jh1 j8 mq-)xgucodiciency of this engine?

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