ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ä³Í¬Ñ§×ö¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯µÄ¹æÂÉ¡±µÄʵÑé×°ÖÃÈçͼ¡£Ò»Ð¡³µ·ÅÔÚˮƽ³¤Ä¾°åÉÏ£¬×ó²àË©ÓÐһϸÏߣ¬¿ç¹ý¹Ì¶¨ÔÚľ°å±ßÔµµÄ»¬ÂÖÓë¹³ÂëÏàÁ¬£¬Ð¡³µÓÒ²àÓë´©¹ýµç»ð»¨¼ÆʱÆ÷µÄÖ½´øÏàÁ¬£¬ÔÚ¹³ÂëÇ£ÒýÏ£¬Ð¡³µÔÚľ°åÉÏÏò×óÔ˶¯¡£µç»ð»¨´òµã¼ÆʱÆ÷ËùÓõĽ»Á÷µçƵÂÊΪ50 Hz¡£
£¨1£©ÊµÑéÖУ¬Ê¹Óõ½µç»ð»¨´òµã¼ÆʱÆ÷£¨º¬Ö½´ø¡¢Ä«·ÛÖ½£©¡¢Ð¡³µ¡¢³¤Ä¾°å¡¢¹³ÂëºÍϸÏߵȣ¬ÔÚÏÂÃæµÄÒÇÆ÷ºÍÆ÷²ÄÖУ¬»¹ÐèʹÓõÄÓÐ____________¡££¨ÌîÑ¡Ïî´úºÅ£©
A£®µçѹΪ4~6 VµÄ50 Hz½»Á÷µçÔ´
B£®µçѹΪ220 VµÄ50 Hz½»Á÷µçÔ´
C£®¿Ì¶È³ß
D£®Í£±í
E£®Ììƽ
£¨2£©¸Ãͬѧ½øÐÐÁËÒÔÏÂʵÑé²Ù×÷²½Ö裬ÆäÖдíÎóµÄ²½ÖèÓÐ_________¡£
A£®½«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚ³¤Ä¾°åÓл¬ÂÖµÄÒ»¶Ë£¬²¢½ÓºÃµç·
B£®½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×
C£®°ÑÒ»ÌõϸÏßË©ÔÚС³µÉÏ£¬Ï¸Ïß¿ç¹ý¶¨»¬ÂÖ£¬Ï¶˹Ò׏³Âë
D£®ÊµÑéʱÏÈÊÍ·ÅС³µ£¬ÔÙ½ÓͨµçÔ´
£¨3£©ÈçͼËùʾ£¬µç»ð»¨´òµã¼ÆʱÆ÷ÔÚÖ½´øÉÏ´ò³öһϵÁÐÇåÎúµÄµã¼££¬ÏàÁÚµÄÁ½¼ÆÊýµã¼ä»¹ÓÐ4¸öµãûÓл³ö£¬¸ù¾ÝÖ½´ø¿ÉÒÔ¼ÆËã¸÷µãµÄ˲ʱËٶȼ°Ð¡³µ¼ÓËٶȡ£´ò¼ÆÊýµã5ʱС³µµÄËÙ¶Èv5=_______m/s£¬¸ù¾ÝÖ½´ø¼ÆËãС³µµÄ¼ÓËÙ¶Èa=________m/s2¡££¨½á¹û¾ù±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨4£©Èç¹ûµ±Ê±µçÍøÖн»±äµçÁ÷µÄƵÂÊÊÇf=51 Hz£¬¶ø×öʵÑéµÄͬѧ²¢²»ÖªµÀ£¬ÄÇô¼ÓËٶȵIJâÁ¿ÖµÓëʵ¼ÊÖµÏà±È___________(Ñ¡Ìî¡°Æ«´ó¡±¡°Æ«Ð¡¡±»ò¡°²»±ä¡±)¡£
¡¾´ð°¸¡¿£¨1£©BC £¨2£©AD £¨3£©0.51 0.38 £¨4£©Æ«Ð¡
¡¾½âÎö¡¿
£¨1£©µç»ð»¨¼ÆʱÆ÷ÐèÒª220V½»Á÷µçÔ´£¬¿ÉÖªÔÚÏÂÃæµÄÒÇÆ÷ºÍÆ÷²ÄÖУ¬»¹ÐèʹÓõÄÓеçѹΪ220 VµÄ50 Hz½»Á÷µçÔ´£»Í¬Ê±ÐèÒª¿Ì¶È³ß²âÁ¿Ö½´øµÄµã¼£¼ä¾à£»¹ÊÑ¡BC.
£¨2£©½«´òµã¼ÆʱÆ÷¹Ì¶¨ÔÚ³¤Ä¾°åûÓл¬ÂÖµÄÒ»¶Ë£¬²¢½ÓºÃµç·£¬Ñ¡ÏîA´íÎó£»½«Ö½´ø¹Ì¶¨ÔÚС³µÎ²²¿£¬²¢´©¹ý´òµã¼ÆʱÆ÷µÄÏÞλ¿×£¬Ñ¡ÏîBÕýÈ·£»°ÑÒ»ÌõϸÏßË©ÔÚС³µÉÏ£¬Ï¸Ïß¿ç¹ý¶¨»¬ÂÖ£¬Ï¶˹Ò׏³Â룬ѡÏîCÕýÈ·£»ÊµÑéʱÏȽÓͨµçÔ´£¬ÔÙÊÍ·ÅС³µ£¬Ñ¡ÏîD´íÎó£»´ËÌâÑ¡Ôñ²»ÕýÈ·µÄʵÑé²½Ö裬¹ÊÑ¡AD.
£¨3£©ÏàÁÚµÄÁ½¸ö¼ÆÊýµã¼ä»¹ÓÐ4¸öµãû»³ö£¬¼ÆÊýµã¼äµÄʱ¼ä¼ä¸ô£ºt=0.02¡Á5=0.1s£¬
µÚ5µãµÄ˲ʱËٶȣº£¬
ÓÉÔȱäËÙÖ±ÏßÔ˶¯ÍÆÂÛ£º¡÷x=at2¿ÉÖª£¬Ð¡³µµÄ¼ÓËÙ¶ÈΪ £®
£¨4£©Èç¹ûÔÚij´ÎʵÑéÖУ¬½»Á÷µçµÄƵÂÊ51Hz£¬f£¾50Hz£¬ÄÇôʵ¼Ê´òµãÖÜÆÚ±äС£¬¸ù¾ÝÔ˶¯Ñ§¹«Ê½¡÷x=at2µÃ£ºÕæʵµÄ¼ÓËÙ¶ÈÖµ¾Í»áÆ«´ó£¬ËùÒÔ²âÁ¿µÄ¼ÓËÙ¶ÈÖµÓëÕæʵµÄ¼ÓËÙ¶ÈÖµÏà±ÈÊÇƫС¡£