2021骞存敞鍐婇浕姘e伐绋嬪斧銆婄櫦(f膩)杓歌畩闆汇€嬪皥妤�(y猫)鑰冭│鐪熼绮鹃伕锛堜笁锛�



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2021骞存敞鍐婇浕姘e伐绋嬪斧銆婄櫦(f膩)杓歌畩闆汇€嬪皥妤�(y猫)鑰冭│鐪熼绮鹃伕锛堜笁锛�
1銆佺壒鎬ч樆鎶梈g= 150Ω鐨勫偝杓哥窔閫氶亷闀峰害鐐�λ/4锛岀壒鎬ч樆鎶楃偤Zt鐨勭劇鎼嶈€楃窔鎺ュ悜250Ω鐨勮矤(f霉)杓�锛岀暥(d膩ng)Zt鍙栦綍鍊兼檪(sh铆)锛屽彲浣胯矤(f霉)杓夊拰鐗规€ч樆鎶楃偤150Ω鐨勫偝杓哥窔鐩稿洓閰嶏紵锛堬級 銆愬柈閬搁銆�
A.200Ω
B.193.6Ω
C.400Ω
D.100Ω
姝g⒑绛旀:B
2銆佹煇绶氳矾鍏╃姣嶇窔闆诲鍒嗗垾鐐猴紝绶氳矾鐨勯浕澹撻檷钀界偤锛堬級?锛佺窢鑺渪椤屻€�
A.13. 76kV
B. 11. 6kV
C.13. 76∠56. 96°kV
D.11.6∠30. 45°kV
姝g⒑绛旀:C
3銆佷簩閫�(j矛n)鍒舵暩(sh霉)鐨勮(b菙)纰肩偤锛堬級?锛佺窢鑺渪椤屻€�
A.11101
B.01101
C.00010
D.10011
姝g⒑绛旀:D
4銆佺櫦(f膩)闆绘(j墨)鑸�10kV姣嶇窔鐩告帴锛岃畩澹撳櫒涓€娆″伌(c猫)鎺ョ櫦(f膩)闆绘(j墨)锛屼簩娆″伌(c猫)鎺�110kV绶氳矾锛岀櫦(f膩)闆绘(j墨)鑸囪畩澹撳櫒椤嶅畾闆诲鍒嗗垾鐐猴紙锛�?锛佺窢鑺渪椤屻€�
A. 10.5kV锛�10/110kV
B.10kV锛�10/121kV
C.10.5KV锛�10.5/121kV
D.10kV锛�10. 5/110kV
姝g⒑绛旀:C
绛旀瑙f瀽:鐧�(f膩)闆绘(j墨)閫氬父閬�(y霉n)琛屽湪姣旂恫(w菐ng)绲�(lu貌)妯�(bi膩o)绋遍浕澹撻珮5%鐨勭媭鎱�(t脿i)涓�锛屾墍浠ョ櫦(f膩)闆绘(j墨)杓冨畾闆诲瑕�(gu墨)瀹氭瘮缍�(w菐ng)绲�(lu貌)妯�(bi膩o)绋遍浕澹撻珮5%锛涜畩澹撳櫒涓€娆$篂绲勭浉鐣�(d膩ng)浜庣敤闆昏ō(sh猫)鍌�锛屽叾椤嶅畾闆诲绛変簬缍�(w菐ng)绲�(lu貌)鐨勯瀹氶浕澹�锛岀暥(d膩ng)鐩存帴鑸囩櫦(f膩)闆绘(j墨)閫f帴鏅�(sh铆)锛屽氨绛変簬鐧�(f膩)闆绘(j墨)鐨勯瀹氶浕澹�锛涗氦澹撳櫒浜屾绻炵祫鐩哥暥(d膩ng)浜庝緵闆昏ō(sh猫)鍌欙紝鑰冩叜鍒拌畩澹撳櫒鍏�(n猫i)閮ㄧ殑闆诲鎼嶈€�锛屼簩娆$篂绲勯瀹氶浕澹撲竴鑸瘮缍�(w菐ng)绲�(lu貌)楂�5%锛屾煇浜涙儏娉�锛岀暥(d膩ng)璁婂鍣ㄧ煭璺浕澹撳ぇ浜庣瓑浜�7%鏅�(sh铆)锛屼簩娆″伌(c猫)绻炵祫椤嶅畾闆诲姣旂恫(w菐ng)绲�(lu貌)楂�10%銆�
5銆�—鍚簮涓€绔彛闆婚樆缍�(w菐ng)绲�(lu貌)锛屾脯寰楀叾鐭矾闆绘祦鐐�2A銆傛脯寰楄矤(f霉)杓夐浕闃诲強R=10Ω鏅�(sh铆)锛岄€氶亷璨�(f霉)杓夐浕闃籖鐨勯浕娴佺偤1.5A锛岃┎鍚簮涓€绔彛闆婚樆缍�(w菐ng)绲�(lu貌)鐨勯枊璺浕澹揢oc鐐猴紙锛�銆� 銆愬柈閬搁銆�
A.50V
B.60V
C.70V
D.80V
姝g⒑绛旀:B
6銆侀€氶亷娓噺娴佸叆鏈変簰鎰熺殑鍏╀覆鑱�(li谩n)绶氬湀鐨勯浕娴�銆佸姛鐜囧拰澶栨柦闆诲锛岃兘澶犵⒑瀹氬叐鍊嬬窔鍦堜箣闁撶殑浜掓劅锛岀従(xi脿n)鍦ㄧ敤U=220V锛宖=50Hz闆绘簮閫�(j矛n)琛屾脯閲�锛岀暥(d膩ng)闋嗗悜涓叉帴鏅�(sh铆)锛屾脯寰桰=2.5A锛孭=62. 5W锛涚暥(d膩ng)鍙嶄覆閫f帴鏅�(sh铆)锛屾脯寰桺 = 250W锛屽洜姝�锛屽叐绶氬湀鐨勪簰鎰烳鐐猴紙锛�?锛佺窢鑺渪椤屻€�
A.42.85mH
B.45. 29mH
C.88. 21mH
D.35.49mH
姝g⒑绛旀:D
7銆佸叐鑷鸿畩澹撳櫒A鍜孊骞惰伅(li谩n)閬�(y霉n)琛�锛屽凡鐭�锛岄樆鎶楅浕澹�锛屼笖宸茬煡璁婂鍣ˋ鍦ㄩ瀹氶浕娴佷笅鐨勯妳鑰楀拰椤嶅畾闆诲涓嬬殑閻佃€楀垎鍒ョ偤銆傞偅涔堝叐鑷鸿畩澹撳櫒骞惰伅(li谩n)閬�(y霉n)琛�锛岀暥(d膩ng)璁婂鍣ˋ閬�(y霉n)琛屽湪鍏锋湁鏈€澶ф晥鐜囩殑鎯呮硜涓嬶紝鍏╄嚭璁婂鍣ㄦ墍鑳戒緵绲︾殑绺借矤(f霉)杓夌偤锛堬級銆� 銆愬柈閬搁銆�
A.1695kVA
B.2825kVA
C.3000kVA
D.3129kVA
姝g⒑绛旀:A
绛旀瑙f瀽:璁婂鍣ㄩ枔璨�(f霉)鑽峰垎閰嶈垏鍏堕瀹氬閲忔垚姝f瘮锛岃€岃垏闃绘姉闆诲鎴愬弽姣�銆傜暥(d膩ng)璁婂鍣ㄥ苟鍒楅亱(y霉n)琛屾檪(sh铆)锛屽鏋滈樆鎶楅浕澹撲笉鍚�锛屽叾璨�(f霉)鑽峰苟涓嶆寜椤嶅畾瀹归噺鎴愭瘮渚嬪垎閰嶏紝骞跺垪閬�(y霉n)琛岀殑璁婂鍣ㄥ壇閭婇浕娴佽垏闃绘姉闆诲鎴愬弽姣�锛岃矤(f霉)鑽风巼涔熻垏闃绘姉闆诲鎴愬弽姣�銆� 瑷�(sh猫)A璁婂鍣ㄧ殑璨�(f霉)鑽风巼鐐�βa锛岀暥(d膩ng)閵呰€楄垏閻佃€楃浉绛夋檪(sh铆)锛岃畩澹撳櫒鍏锋湁鏈€澶х殑閬�(y霉n)琛屾晥鐜囷紝鍓囷細B璁婂鍣ㄧ殑璨�(f霉)鑽风巼鐐哄叐鑷鸿畩澹撳櫒渚涚郸鐨勭附璨�(f霉)鑽凤細1695.6KVA
8銆佷互涓嬮棞(gu膩n)浜庝竴鑷哄崐鏂疯矾鍣ㄦ帴绶氱殑鎻忚堪涓�锛屾纰虹殑鏄紙锛�?锛佺窢鑺渪椤屻€�
A.浠讳綍鎯呮硜涓嬮兘蹇呴爤閲囩敤浜ゅ弶鎺ョ窔浠ユ彁楂橀亱(y霉n)琛岀殑鍙潬鎬�
B.鐣�(d膩ng)鍍呮湁鍏╀覆鏅�(sh铆)锛屽悓鍚嶅洖璺疁鍒嗗垾鎺ュ叆鍚屽伌(c猫)姣嶇窔.锛屼笖闇€瑁濊ō(sh猫)闅旈洟闁嬮棞(gu膩n)
C.鐣�(d膩ng)鍍呮湁鍏╀覆鏅�(sh铆)锛屽悓鍚嶅洖璺疁鍒嗗垾鎺ュ叆涓嶅悓鍋�(c猫)鐨勬瘝绶�锛屼笖闇€瑁濊ō(sh猫)闅旈洟闁嬮棞(gu膩n)
D.鐣�(d膩ng)鍍呮湁鍏╀覆鏅�(sh铆)锛屽悓鍚嶅洖璺疁鍒嗗垾鎺ュ叆鍚屽伌(c猫)姣嶇窔锛屼笖鐒¢爤瑁濊ō(sh猫)闅旈洟闁嬮棞(gu膩n)
姝g⒑绛旀:C
9銆佸彲鍐嶇敓鑳芥簮鐧�(f膩)闆讳笉鍖呮嫭锛堬級?锛佺窢鑺渪椤屻€�
A.姘撮浕
B.鐢熺墿璩�(zh矛)鐧�(f膩)闆�
C.鏍搁浕
D.鍦�?z茅)宀歭(f膩)闆�
姝g⒑绛旀:B
10銆佸惈鏈夊叐鍊嬬窔鎬т簩绔嫊鎱�(t脿i)鍏冧欢鐨勯浕璺紙锛�銆傘€愬柈閬搁銆�
A.—瀹氭槸浜岄殠闆昏矾
B.鏈夊彲鑳芥槸涓€闅庨浕璺�
C.—瀹氭槸涓€闅庨浕璺�
D.鏈夊彲鑳芥槸涓夐殠闆昏矾
姝g⒑绛旀:B
11銆佺敤鎴跺伌(c猫)鍙噰鍙栧涓嬫帾鏂借(di脿o)鏁撮浕澹擄紙锛�?锛佺窢鑺渪椤屻€�
A.涓茶伅(li谩n)闆诲鍣�
B.鏀硅畩鏈夊姛鍔熺巼
C.鐧�(f膩)闆绘(j墨)鍑嬪
D.鍔犺SVG
姝g⒑绛旀:D
绛旀瑙f瀽:SVG鐐洪潨姝㈢劇鍔熺櫦(f膩)鐢熷櫒鎴栭潨姝㈢劇鍔熻(b菙)鍎熷櫒銆傛寚鐢辫嚜鎻涚浉鐨勯浕鍔涘崐灏�(d菐o)楂旀⿱寮忚畩娴佸櫒渚嗛€�(j矛n)琛屽嫊鎱�(t脿i)鐒″姛瑁�(b菙)鍎�?sh霉)闅綽缃�銆傚皪姣斿偝绲�(t菕ng)鐨勮(di脿o)鐩告(j墨)銆侀浕瀹归浕鎶楀櫒銆佹櫠闁樼鎺у埗闆绘姉鍣ㄧ瓑鍌崇当(t菕ng)瑁�(b菙)鍎熸柟寮�锛孲VG鏈夎憲鏇寸偤鍎�(y艒u)鐣扮殑鎬ц兘銆�
12銆佹灦绌鸿几闆荤窔璺€�(j矛n)琛屽皫(d菐o)绶氭彌浣嶇殑鐩殑鏄紙锛�?锛佺窢鑺渪椤屻€�
A.娓涘皬闆绘殘鎼嶈€�
B.娓涘皯涓夌浉鍙冩暩(sh霉)涓嶅钩琛�
C.娓涘皬绶氳矾闆绘姉
D.娓涘皬娉勯湶闆绘祦
姝g⒑绛旀:B
绛旀瑙f瀽:绶氳矾鎻涗綅鐨勪綔鐢ㄦ槸鐐轰簡娓涘皯闆诲姏绯荤当(t菕ng)姝e父閬�(y霉n)琛屾檪(sh铆)涓嶅钩琛¢浕娴佸拰涓嶅钩琛¢浕澹擄紝骞堕檺鍒堕€侀浕绶氳矾灏嶉€氫俊绶氳矾鐨勫奖闊�锛屼笉鎻涗綅绶氳矾鐨勬瘡鐩搁樆鎶楀拰灏�(d菐o)绱嶆槸涓嶇浉绛夌殑锛岄€欏紩璧蜂簡璨�(f霉)搴忓拰闆跺簭闆绘祦銆傞亷澶х殑璨�(f霉)搴忛浕娴佸皣鏈冨紩璧风郴绲�(t菕ng)鍏�(n猫i)闆绘(j墨)鐨勯亷鐔�锛岃€岄浂搴忛浕娴佽秴閬庝竴瀹氭暩(sh霉)鍊兼檪(sh铆)锛屽湪涓€ч粸(di菐n)涓嶆帴鍦扮郴绲�(t菕ng)涓�锛屾湁鍙兘寮曡捣闈堟晱搴﹁純楂樼殑鎺ュ湴绻奸浕鍣ㄧ殑瑾ゅ嫊浣�銆�
13銆�—鍚岃桓闆荤簻闀稬=2m锛屽叾鍏�(n猫i)灏�(d菐o)楂斿崐寰慠1=1cm锛屽灏�(d菐o)楂斿収(n猫i)鍗婂緫鐐篟2 = 6cm锛屽皫(d菐o)楂旈枔绲曠罚鏉愭枡鐨勯浕闃荤巼锛岀暥(d膩ng)鍏�(n猫i)澶栧皫(d菐o)楂旈枔闆诲鐐�500V鏅�(sh铆)锛岀禃绶e堡涓紡闆绘祦鐐猴紙锛�?锛佺窢鑺渪椤屻€�
A. 3.51μA
B.7.02μA
C.1.76μA
D.8.86μA
姝g⒑绛旀:A
14銆�—鑷烘槦褰㈣伅(li谩n)鎺ョ殑涓夌浉闅辨サ鍚屾鐧�(f膩)闆绘(j墨)椤嶅畾瀹归噺Sn = 1000kVA锛岄瀹氶浕Un=6.6kV锛屽悓姝ラ浕鎶梄s==20Ω锛屼笉瑷�(j矛)闆绘闆婚樆鍜岀椋藉拰锛岃┎鐧�(f膩)闆绘(j墨)椤嶅畾閬�(y霉n)琛屼笖鍔熺巼鍥犳暩(sh霉)cosψ=1鏅�(sh铆)锛屽嫷纾侀浕鍕曞嫝鐐猴紙锛�銆侫. B.銆愬柈閬搁銆�
A.4271V
B.4193V
C.4400V
D.6600V
姝g⒑绛旀:B
绛旀瑙f瀽:闅辨サ鍚屾鐧�(f膩)闆绘(j墨)闆诲嫊鍕㈠钩琛℃柟绋嬪紡锛氾紝鐢变簬cosψ=1鍙煡U銆両鍚岀浉浣�锛岀浉閲忓湒濡傝В鍦栨墍绀恒€� 椤嶅畾鐩搁浕澹擄細椤嶅畾鐩搁浕娴侊紙鑸囩窔闆绘祦鐩稿悓锛夛細鍕电闆诲嫊鍕細4192.5V
15銆侀浕鍔涚郴绲�(t菕ng)涓湁鍔熷姛鐜囦笉瓒虫檪(sh铆)锛屾渻閫犳垚锛堬級?锛佺窢鑺渪椤屻€�
A.闋荤巼涓婂崌
B.闆诲涓嬮檷
C.闋荤巼涓嬮檷
D.闆诲涓婂崌
姝g⒑绛旀:C
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