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 is used as the working substance f8md bijb- h06fzd,d k7or 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 much heat is expelled by the gas during prod-78,bd0m6f ibk hdz jcess 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 dtgj700x avz41 (s2k:og tmeo 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 et g2yxoov0 (8tnergy and performs 50 J of work in each cycle. What is its efficix v8to( 0tyog2ency?

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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 lowv4cos-w*dh/ e 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 opkd8 xg.hok* -vmbrk2* j;f0xmerate 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 for an engine thalyttwd/bp xb6rvw*2 -1 y79k rt undergoes thedy-bp1wkx62l7ty *wb /vrrt9 cyclic process (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 su6vrflx*sj + yt68o()z3unva abstance for a refrigerator that undergoes the cyclic process (ABCDA) shown in the PV diagram. The processes are all isochoric or isobaric with pressures o a3u*(ytr s6ja+8z lnf6vv )xbetween $P_0$ 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 revee, 96a -tqt ol8f uhqd2 -l6djwmf2h0srsible cyclic process (ABCA) shown in the PV diagram. Process A →B is adiabatic. What is the efficiency of this engih9 2loq suj-m8q6 60hldtdwfa t,e-2fne?

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