2020骞撮浕姘ｅ伐绋嬪斧鐧�(f膩)杓歌畩闆昏€冭│缍�(j墨ng)鍏歌│椤岀反缈�(x铆)
鐎忚
鏀惰棌
鐩搁棞(gu膩n)鎺ㄨ枽锛�2019骞撮浕姘ｅ伐绋嬪斧璀夋浉闋�(l菒ng)鍙栨檪闁撳強鍦伴粸(di菐n)鍚勫湴鍗€(q奴)鍖附
鐐轰簡璁撹€冪敓閬垮厤寰�(f霉)缈�(x铆)璧板綆璺�锛岀挵(hu谩n)鐞冪恫(w菐ng)鏍＄偤澶у鏁寸悊浜嗕竴浜�2020骞撮浕姘ｅ伐绋嬪斧鐧�(f膩)杓歌畩闆昏€冭│缍�(j墨ng)鍏歌│椤岀反缈�(x铆)锛岄€氶亷2020骞撮浕姘ｅ伐绋嬪斧鐧�(f膩)杓歌畩闆昏€冭│缍�(j墨ng)鍏歌│椤岀反缈�(x铆)妾㈤(y脿n)澶у寰�(f霉)缈�(x铆)鏁堟灉銆�
鐠�(hu谩n)鐞冪恫(w菐ng)鏍℃彁渚涗簡 鍏嶈不(f猫i)闋�(y霉)绱勭煭淇℃彁閱�鏈嶅嫏(w霉) 闋�(y霉)绱勬垚鍔熷悗鎮ㄥ彲鍏嶈不(f猫i)鏀跺埌2020骞撮浕姘ｅ伐绋嬪斧鑰冭│瀹樻柟鍫卞悕鏅傞枔鐨勭煭淇℃彁閱�锛岃畵鑰冪敓鍙婃檪鐭ラ亾鑰冭│淇℃伅銆�
1 宸茬煡r=3ω,xl=15ω,xc=11ω,灏囧畠鍊戜覆鑱�(li谩n)鏅�,绺介樆鎶梲绛変簬(c).
a.29ω;
b.7ω;
c.5ω;
d.3ω.
2 姝ｅ鸡闆昏矾涓浕瀹瑰厓浠剁殑鐒″姛鍔熺巼琛ㄩ仈(d谩)寮忔槸(a).
a.qc=u2ωc;
b.qc=i2ω
c;c.qc=xci2;
d..
3 闆荤鎰熸噳(y墨ng)閬庣▼涓�,鍥炶矾涓墍鐢�(ch菐n)鐢熺殑闆诲嫊鍕㈡槸鐢�(b)姹哄畾鐨�.
a.閫氶亷鍥炶矾鐨勭閫氶噺;
b.鍥炶矾涓閫氶噺璁婂寲鐜�;
c.鍥炶矾鎵€鍖呭湇鐨勯潰绌�;
d.鍥炶矾閭婇暦.
4 鏌愬伐闋绘寮﹂浕娴�,鐣�(d膩ng)t=0,i(0)=5a鐐烘渶澶у€�,鍓囪┎闆绘祦瑙ｆ瀽寮忔槸(c).
a.i=5sin(100πt-90°);
b.i=5sin(100πt+90°)?;
c.i=5sin(100πt+90°);
d.i=5sin(100πt).
5 閫氶浕灏�(d菐o)楂斿湪纾佸牬涓墍鍙楃殑鍔涙槸(c).
a.闆诲牬鍔�;
b.纾佸牬鍔�;
c.闆荤鍔�;
d.寮曞姏.
6 鑷劅绯绘暩(sh霉)l鑸�(d)鏈夐棞(gu膩n).
a.闆绘祦澶у皬;
b.闆诲楂樹綆;
c.闆绘祦璁婂寲鐜�;
d.绶氬湀绲�(ji茅)妲�(g貌u)鍙婃潗鏂欐€ц唱(zh矛).
7 宸茬煡鏌愬厓浠剁殑u=100sin(ωt+30°)v,i=10sin(ωt-60°)a,鍓囪┎鍏冧欢鐐�(b).
a.闆婚樆;
b.闆绘劅;
c.闆诲;
d.鐒℃硶纰哄畾.
8 宸茬煡r銆乴銆乧涓茶伅(li谩n)闆昏矾涓�,闆绘祦婊悗绔浕澹�,鍓囦笅闈㈢祼(ji茅)璜栦腑,姝ｇ⒑鐨勬槸(b).
a.xc>xl;
b.xc
9 骞惧€嬮浕瀹瑰櫒涓茶伅(li谩n)閫ｆ帴鏅�,鍏剁附闆诲閲忕瓑浜�(d).
a.鍚勪覆鑱�(li谩n)闆诲閲忕殑鍊掓暩(sh霉)鍜�;
b.鍚勪覆鑱�(li谩n)闆诲閲忎箣鍜�;
c.鍚勪覆鑱�(li谩n)闆诲閲忎箣鍜岀殑鍊掓暩(sh霉);
d.鍚勪覆鑱�(li谩n)闆诲閲忎箣鍊掓暩(sh霉)鍜岀殑鍊掓暩(sh霉)
10 姝ｅ鸡闆昏矾涓浕瀹瑰厓浠剁殑鐒″姛鍔熺巼琛ㄩ仈(d谩)寮忔槸( a ).
a.qc=u2ωc;
b.qc=i2ωc;
c.qc=xci2;
浠ヤ笂灏辨槸灏忕法鏁寸悊鐨�2020骞撮浕姘ｅ伐绋嬪斧鐧�(f膩)杓歌畩闆昏€冭│缍�(j墨ng)鍏歌│椤岀反缈�(x铆)锛屾澶�锛岀挵(hu谩n)鐞冪恫(w菐ng)鏍″皬绶ㄥ凡灏�2020骞撮浕姘ｅ伐绋嬪斧瑭﹂涓婂偝鍒拌硣鏂欎笅杓夐爜锛屾湁闇€瑕佺殑鑰冪敓鍙粸(di菐n)鎿婁笅鏂规寜閳曞厤璨�(f猫i)涓嬭級,鏇村鍌欒€冭硣鏂欐寔绾�(x霉)鏇存柊涓€�
鏈€鏂拌硣瑷�
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