ÌâÄ¿ÄÚÈÝ
17£®£¨2£©Ä³Ñо¿ÐÔѧϰС×éÀûÓ÷ü°²·¨²â¶¨Ä³Ò»µç³Ø×éµÄµç¶¯ÊƺÍÄÚ×裬ʵÑéÔÀíÈçͼ¼×Ëùʾ£¬ÆäÖУ¬ÐéÏß¿òÄÚΪÓÃÁéÃôµçÁ÷¼ÆG¸Ä×°µÄµçÁ÷±íA£¬VΪ±ê×¼µçѹ±í£¬EΪ´ý²âµç³Ø×飬SΪ¿ª¹Ø£¬RΪ»¬¶¯±ä×èÆ÷£¬R0ÊDZê³ÆֵΪ4.0¦¸µÄ¶¨Öµµç×裮¢ÙÒÑÖªÁéÃôµçÁ÷¼ÆGµÄÂúÆ«µçÁ÷Ig=100¦ÌA¡¢ÄÚ×èrg=2.0k¦¸£¬ÈôÒª¸Ä×°ºóµÄµçÁ÷±íÂúÆ«µçÁ÷Ϊ200mA£¬Ó¦²¢ÁªÒ»Ö»1.0¦¸£¨±£ÁôһλСÊý£©µÄ¶¨Öµµç×èR1£»
¢Ú¸ù¾Ýͼ¼×£¬ÓñʻÏß´úÌæµ¼Ïß½«Í¼ÒÒÁ¬½Ó³ÉÍêÕûµç·£»
¢Ûij´ÎÊÔÑéµÄÊý¾ÝÈç±íËùʾ£º¸ÃС×é½è¼ø¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±ÊÔÑéÖмÆËã¼ÓËٶȵķ½·¨£¨Öð²î·¨£©£¬¼ÆËã³öµç³Ø×éµÄÄÚ×èr=1.66¦¸£¨±£ÁôÁ½Î»Ð¡Êý£©£»Îª¼õСżȻÎó²î£¬Öð²î·¨ÔÚÊý¾Ý´¦Àí·½ÃæÌåÏÖ³öµÄÖ÷ÒªÓŵãÊdzä·ÖÀûÓÃÒÑ»ñµÃµÄÊý¾Ý£®
²âÁ¿´ÎÊý | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
µçѹ±íV¶ÁÊýU/V | 5.26 | 5.16 | 5.04 | 4.94 | 4.83 | 4.71 | 4.59 | 4.46 |
¸Ä×°±íA¶ÁÊýI/mA | 20 | 40 | 60 | 80 | 100 | 120 | 140 | 160 |
·ÖÎö £¨1£©¸ù¾ÝµçÁ÷±íµÄ¸Ä×°ÔÀí£¬¼ÆËã²¢ÁªµÄµç×裮
£¨2£©¸ù¾Ýµç·ͼÁ¬½ÓʵÎïͼ£¬×¢Òâµç±íµÄ½ÓÏßÖùÒÔ¼°»¬¶¯±ä×èÆ÷µÄ½â·¨
£¨3£©½è¼ø¡°Ñо¿ÔȱäËÙÖ±ÏßÔËÐС±ÊµÑéÖмÆËã¼ÓËٶȵķ½·¨£¨Öð²î·¨£©£¬Ã¿Á½×éÊý¾ÝÁªÁ¢Çó³öE£¬r£»¶øºóÈ¡Æäƽ¾ùÖµ¼´¿É£»Öð²î·¨ÔÚÊý¾Ý´¦Àí·½ÃæÌåÏÖ³öµÄÖ÷ÒªÓŵãÊdzä·ÖÀûÓÃÈ¡µÃµÄÊý¾Ý£®
£¨4£©½áºÏµç·ͼ£¬Óɱպϵç·ŷķ¶¨ÂÉE=U+I£¨R0+r£©·ÖÎöÄÚ×è²âÁ¿Öµ×ÜÁ¿Æ«´óµÄÔÒò
½â´ð ½â£º£¨1£©¸ù¾ÝµçÁ÷±íµÄ¸Ä×°ÔÀí£¬R1=$\frac{{I}_{g}{R}_{g}}{I-{I}_{g}}$=$\frac{100¡Á1{0}^{-6}¡Á2000}{0.200-100¡Á1{0}^{-6}}$=1.0¦¸£»
£¨2£©¸ù¾Ýµç·ͼÁ¬½ÓʵÎïͼ£¬×¢Òâµç±íµÄ½ÓÏßÖùÒÔ¼°»¬¶¯±ä×èÆ÷µÄ½â·¨£¬µç·ͼÈçͼËùʾ£º
£¨3£©½è¼ø¡°Ñо¿ÔȱäËÙÖ±ÏßÔËÐС±ÊµÑéÖмÆËã¼ÓËٶȵķ½·¨£¨Öð²î·¨£©£¬²ÉÓÃ1Óë5£»2Óë6£»3Óë7£»4Óë8£»Á½Á½×éºÏ£¬ÓÉE=U+I£¨R0+r£©µÃ£¬¡÷U=¡÷I£¨R0+r£©£¬ÁªÁ¢Çó³öE£¬r£¬¶øºóÈ¡Æäƽ¾ùÖµ¿ÉµÃ£®
ÓÉE=U+I£¨R0+r£©µÃ£¬¡÷U=¡÷I£¨R0+r£©£¬¹Êr=$\frac{¡÷U}{¡÷I}$-R0£¬
²ÉÓÃ1Óë5ʱ£¬r1=$\frac{{U}_{1}-{U}_{5}}{4¡÷I}$-R0£»
²ÉÓÃ2Óë6ʱ£¬r1=$\frac{{U}_{2}-{U}_{6}}{4¡÷I}$-R0£»
²ÉÓÃ3Óë7ʱ£¬r1=$\frac{{U}_{3}-{U}_{7}}{4¡÷I}$-R0£»
²ÉÓÃ4Óë8ʱ£¬r1=$\frac{{U}_{4}-{U}_{8}}{4¡÷I}$-R0£»
Ôòr=$\frac{{r}_{1}+{r}_{2}+{r}_{3}+{r}_{4}}{4}$=$\frac{£¨{U}_{1}+{U}_{2}+{U}_{3}+{U}_{4}£©-£¨{U}_{5}+{U}_{6}+{U}_{7}+{U}_{8}£©}{16¡÷I}$-R0£¬´úÈëÊý¾Ý½âµÃ£ºr=1.66¦¸£»
Öð²î·¨ÔÚÊý¾Ý´¦Àí·½ÃæÌåÏÖ³öµÄÖ÷ÒªÓŵãÊdzä·ÖÀûÓÃÈ¡µÃµÄÊý¾Ý£®
¹Ê´ð°¸Îª£º£¨1£©1.0£»£¨2£©ÈçͼËùʾ£»£¨3£©1.66£»³ä·ÖÀûÓÃÒÑ»ñµÃµÄÊý¾Ý
µãÆÀ ±¾Ìâ²âÁ¿µç¶¯ÊƺÍÄÚµç×èµÄʵÑ飬ҪעÒâµç±í¸ÄװΪÖصãÄÚÈÝÒªÇÐʵŪÃ÷°×£¬Á¬½ÓʵÎïͼΪ»ù±¾¹¦£¬Êý¾Ý´¦ÀíºÍÎó²î·ÖÎöµÄÄÜÁ¦ÒªÆ½Ê±¼ÓǿѵÁ·£¬½áºÏ¾ßÌåµÄʵÑéÇé¾°¾ßÌå·ÖÎö£¬ÓÐÒ»¶¨ÄѶȣ®
A£® | ½»Á÷µçµÄƵÂÊÊÇ100Hz | B£® | µçÁ÷±íµÄʾÊýΪ20A | ||
C£® | 0.02sʱ´©¹ýÏßȦµÄ´ÅͨÁ¿×î´ó | D£® | 0.01sʱÏßȦƽÃæÓë´Å³¡·½ÏòƽÐÐ |
A£® | Ïß¿ò²úÉúµÄ¸ÐÓ¦µç¶¯ÊÆ´óСΪkL2 | |
B£® | Ïß¿ò²úÉúµÄ¸ÐÓ¦µç¶¯ÊÆ´óСΪ$\frac{1}{2}$kL2 | |
C£® | aµãµÄµçÊƸßÓÚbµãµÄµçÊÆ | |
D£® | µçÈÝÆ÷Ëù´øµÄµçºÉÁ¿ÎªÁã |
A£® | ¼òгºá²¨µÄ²¨³¤ÊÇ1m | B£® | ¼òгºá²¨µÄ²¨³¤ÊÇ0.5m | ||
C£® | PµãÊÇÕñ¶¯¼ÓÇ¿µã | D£® | PµãÊÇÕñ¶¯¼õÈõµã |