-!
銆婄數宸ヤ笌鐢靛瓙鎶�鏈�?/p>
涔犻涓庤В绛?/p>
绗簩绔狅細姝ｅ鸡浜ゆ祦鐢佃矾銆佺涓夌珷锛氫笁鐩镐氦娴佺數璺?/p>
涓�銆佸崟椤归�夋嫨棰?/p>
*1
锛?/p>
R
銆?/p>
L
涓?/p>
鑱旂殑姝?/p>
寮︿氦
娴佺數
璺棰?/p>
1
鍥炬墍绀?/p>
锛岃嫢
u
R
=5
2
sin(
蠅
t+10
掳
)V
锛?/p>
u
L
=5
2
sin(
蠅
t+100
掳
)V
锛屽垯鎬荤數
鍘?/p>
u
涓?/p>
(
B
)
銆?/p>
A.5sin(
蠅
t+45
掳
)V
B.10sin(
蠅
t+55
掳
)V
C.5
2
sin(
蠅
t+110
掳
)V
D.10
2
sin(
蠅
t+70
掳
)V
*2
锛?/p>
璐熻浇涓轰笁瑙掑舰杩炴帴鐨勪笁鐩哥數璺紝鑻ユ瘡鐩歌礋杞界殑鏈夊姛鍔熺巼涓?/p>
30W
锛屽垯涓夌浉
鏈夊姛鍔熺巼涓?/p>
(
C
)
銆?/p>
A. 0
B.30
3
W
C. 90W
D. 90
3
W
**3
锛?/p>
鏌愮數鎰?/p>
L
鎺ヤ簬棰戠巼涓?/p>
50Hz
鐨勬寮︿氦娴佺數璺紝璁剧數鎰?/p>
L=0.1H
锛屽垯璇ョ數鎰?/p>
鐨勬劅鎶楃瓑浜?/p>
(
C
)
銆?/p>
A.3.14
惟
B.0.032
惟
C.31.4
惟
D.314
惟
*4
锛?/p>
鏌愪笁瑙掑舰鑱旀帴鐨勭函鐢靛璐熻浇鎺ヤ簬涓夌浉瀵圭О鐢垫簮涓婏紝宸茬煡鍚勭浉瀹规姉
X
c
=6
惟锛?/p>
绾跨數娴佷负
10A
锛屽垯涓夌浉瑙嗗湪鍔熺巼
(
B
)
銆?/p>
A.1800V
A
B.600V
A
C.600W
D.1800W
5
锛?/p>
鏈夊叧棰?/p>
5
鍥剧ず鐢佃矾鐢垫祦
飪?
I
鐨勪笅鍒楄绠楀叕寮忎腑锛岄敊璇?/p>
锛庯紟
鐨勬槸
(
B
)
銆?/p>
A.
R
U
R
飪?/p>
B.
C
j
U
C
飦?/p>
飪?
C.
C
U
C
j
飪?
飦?/p>
D.
)
C
j
R
(
U
飦?/p>
1
飥?/p>
飪?
6
锛?/p>
涓夌浉瀵圭О璐熻浇鏄熷舰鎺ユ硶锛岃嫢鐢垫簮绾跨數鍘嬩负
380V
锛岀嚎鐢垫祦涓?/p>
10A
锛屾瘡鐩歌礋
杞界殑鍔熺巼鍥犳暟涓?/p>
0.5
锛屽垯璇ョ數璺�荤殑鏈夊姛鍔熺巼涓?/p>
(
C
)
銆?/p>
A.1900W
B.2687W
C.3291W
D.5700W
*7
锛?/p>
绾數鎰熷厓浠剁殑姝ｅ鸡浜ゆ祦鐢佃矾濡傞
7
鍥剧ず锛?