你可能感兴趣的试题
Im=πI Im= √2I Ie= √2Im Im=√2/2I
S=Um·Im S=√2Um·Im S=½Um·Im S=½Um/Im
SELEC . . FRO . . ORDER BY SELEC . . WHER . . GROUP BY SELEC . . WHER . . HAVING SELEC . . FRO . . WHER
i= 0.637Im i= 0.707Im i=Im/√3 i= 0.5Im
SELEC..FRO..ORDER BY SELEC..WHER..GROUP BY SELEC..WHER..HAVING SELEC..FRO..WHERE
po>ih>im>iv ih>im>iv>po im>iv>po>ih iv>po>ih>im iv>im>ih>po
ih.>im.>iv.>po. im.>po.>iv.>ih. po.>ih.>im.>iv. im.>po.>ih.>iv. iv.>im.>ih.>po.
ih.>im.>iv.>po. im.>po.>iv.>ih. po.>ih.>im.>iv. im.>po.>ih.>iv. iv.>im.>ih.>po.
Im=√3I; Im=√2I; Im=0.707I; Im=1.57I
SELEC..FRO..WHERE SELEC..WHER..FROM SELEC..WHER..GROUP BY SELEC..FRO..ORDER BY
I=21/2Im I=21/2Im/2 I=2Im I=Im/2
back and fro back and forth to and forth fro and to
Im=√ 2I; Im=√2I/ 2; Im=I; Im=√ 3I。
po.>ih.>im.>iv. ih.>im.>iv.>po. im.>po.>iv.>ih. im.>po.>ih.>iv. iv.>im.>ih.>po.
交流电Im =1 . 41 4Id 单相半波整流电Im =π Id/2 单相全波整流电Im =π Id 三相全波整流电Im =π Id/3
Im = 2I Im = 2I/2 Im =I Im = 3I。
Im=√2I Im=√2I/2 Im=I Im=√3I
11Im1-3Im2= 5 11Im1+3Im2=5 11Im1+3Im2=-5 11Im1-3Im2=-5