题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp，上传完成后会在上方生成预览，用鼠标连续双击缩略图，或拖动缩略图，该图片就被绑定至本题，显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片，绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习：Physics Unit21: Electromagnetic Induction & Faraday's Law
本习题练习试卷来源于题库网 (https://tiku.one)， 为试卷打印版，您也可以在网站平台(https://tiku.one/)直接 访问本试卷的在线电子版并查看正确答案与解析，搜藏保存任意题目到收藏集。 访问方法: 平台首页左上角"通过试卷号快速访问"输入试卷号 80，并点击直达试卷；或浏览器地址栏内直接输入本试卷链接 https://tiku.one/test80.html  教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。
 作者: admin    总分: 142分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月20日 21:29  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following are units of maqs uu12i(q8cc6w j*fy ft6j5m yfd6- ognetic flux except

参考答案:    
标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction states tha5 .8hvyp 0xgirt the $emf$ induced in a loop of wire is proportional to

参考答案:    
标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the number of loops of wire kycp48 . wpmwt(tp/y,in a coil produces what kind of change on the ip,pk wmwp (yc/tt.8y4nduced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strength of the magnetic field through a loop a(5nyy cc:asgj*e ldy2 16cj rmh2s46of wire produces what kind of change on th agyj2d:12e6j*cs cm n6 h5ycar ly(s4e induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the diameter of y 0vpz5lqj *(+cbu*wt a loop of wire produces what kind of change on the induc( t p5y*czbwq*0 luj+ved $emf$, assuming all other factors remain constant?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As a coil is removed from a ezt i636kl( x kmc5:wdmagnetic field an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  According to Lenz's law, the direction of an induced current* nwq7yt)fl5,sm;e q m in a conductor will be that which tends to produce which of the following effects?qlty emwm*;)sfq 7,5n

参考答案:    
标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizorb*kj e*u+ guwm1q 8)intal table. A bar magnet is held above its center with its north pole pointing down. The stationar)ie k 1g+*mr8q*wbuujy magnet induces (when viewed from above)

参考答案:    
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table. A bar magnet is held a b+iqv0oc6 ovfd (8qetg6l/h7bsq 13jbove its center wog30c (q 7he8qb6 i fvbt1lsoqvj+/6d ith its north pole pointing down, and released. As it approaches the coil, the falling magnet induces (when viewed from above)

参考答案:    
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a table top in a region where the magnetic iqa+u7 21 rvkofield vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the fier1u2+ i7oqva kld fades?

参考答案:    
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a lev -.yypv7z9wb21)f wr0z thayiel table top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is tzzt)0p1iwv -fb y7h9a wy 2r.yhe direction of the induced current in this coil as the field increases?

参考答案:    
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a horizontal table top in a region where the magneti ,s pnnn; fyc0r*0zs1ic field points straight down. The magnetic field disappears suddenly. Whe f0szn,y r c1;0n*npsin viewed from above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on a horizontalf3u/k-ufv..otg16 vbn b: vge table and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on either sid. ktbg v6eg/u: uvo13 fn-bf.ve of the wire. When viewed from above, the induced current circles

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls throuy i7.dmk 3d( kn(gdv;jgh a loop of wire with the north pole entering first. As the north pole enters the wire, the induc(my;gjk(ddkd n73. v ied current will be (as viewed from above)

参考答案:    
标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated at constant ang1q fo(va. jv)cular speed about an axis whose direction can be varied. In a region where a ovc .a f(1)qvjuniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be zero?

参考答案:    
标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wirdli +aes a90yo:l,5w8 kn1ukge is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the w8dse9uo1i0+:,lk5 anyk a g linduced $emf$ is to be a maximum?

参考答案:    
标记此题
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.ndlg da2+5m1ko5 1mp9 *dthhe
参考答案:    

标记此题
18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Lenz's law.
参考答案:    

标记此题
19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
List the three ways thatt ;.gro6fb(yue v)o,s an $emf$ can be induced in a loop of wire.
参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wire moves across a magnort mhb::g 804 rbxo:oetic field. The $emf$ produced in the wire depends on

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the east-west direction)5:r2b+fh 19axq aqmjl is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential inducedb9m+l2raafx 15h:qjq across the rod.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar 7/da-m;b-m0m siiy px; ywm1 irotates at a constant angular velocity $\omega$ about a vertical axis through one of its ends while in a constant magnetic field B that is directed down. The $emf$ induced between the two ends of the bar is

参考答案:    
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator transfq+b(us4 lo0m6dhejy 8 orms

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator coil rotates through 60 revolutions each second. The frequency i9xu /lt8ur;k9nzaf 5i. hv/mof the ;r8zi9u 5lm/htf9vi x .uakn/ $emf$ is

参考答案:    
标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device used t1s sh0+vzdxtyw7oy -*o

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a dexua8s8n rzqrgp2 qzn1nk72xg :x,e6: r)cf:wvice that

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the secondary coil contains more loops th.b6h ,/ob pzkpan the primary coilb/p.p ,obz6 hk then it is a

参考答案:    
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coil contains more loops than ovh 8h9uf15cxthe secondary coil then vhcu19oh85 fxit is a

参考答案:    
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the powe-4*cv c4syxwwe /q3dm r input

参考答案:    
标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a given LC resonant circ; by/5pin 5(xbjhd n9quit,

参考答案:    
标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an indue57sr do pjclb22xl3. ctor are connected in series to an ideal battery of constant terminal voltage. At the moment c cpl2b.ls o7x5r2e3j dontact is made with the battery, the voltage across the resistor is

参考答案:    
标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an ideal battery of conxr0fdwte l730s,oz u 6vg9y+u stant terminal voltage. At the moment contact is made with the battery, the voltage acrostw7 6fz9s0y3+v,oglud uxr 0 es the inductor is

参考答案:    
标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resi(wwla0 zq4fpe a :l5r/stance R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the inductance is 2L. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resistance v.xk i.z yb1a-3ft mhbhq -eiu.g v8n/c7s.h(R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the resistance is 2R. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to a battery. The t* k gh07socigv2nf35zime constant for the circuit represents the time required for t vcg*7n5iz k3 sof0g2hhe current to reach

参考答案:    
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in sh w5007ew 1p5vcr ;rfkshzrf0 eries to a battery. The battery is suddenly removed from the circuit. The time constant for of the circuit represents the time required for the current to decreaz;vrs fp f10k5rh 0w5w0hecr7 se to

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have the same units e51b d+j4dquv w 7vhzq,6(rx tgxcept:

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected to an AC power supply. On this circuit, the cx1k i.sr fkp mimb4t pb)-486murrent

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC31dmao rh- h bi9hr8c; power supply. In this circuit, the currenh83ar r ;c9hbm1o dhi-t

参考答案:    
标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The inductive reactance in an ac circuit changes btiu qj9s7i 1l97j-pfa kvkr((y what factor when the frequency spi urt9719ja 7j-k(v(li kq fis tripled?

参考答案:    
标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the frequency of the AC voltage across an inductor is doubled, the inducb+8efzp d( /,d t.fl+ao 5jhuotive reactance of tuta(++zhe .d8ojfpo df/, b5l hat inductor

参考答案:    
标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage across an ind1 3bt*8 o,dbpzp dc1tpq-ks ;kuctor approaches zero, the inductive reactand1-z qppd83t csk;t 1k,*bbopce of that coil

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure capacitor is connected to an AC power supply. In this8ntibji:bxh:,kbm9f k * 0u-n circuit, the curren,k*8x u0iki-n: nf:j btm9 hbbt

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The capacitive reactance in an ac cir( ; e5p )6wyyv3vo-l+e asygyu:pk hy1:gzc /bcuit changes by what factor when the frequency iswe3uo( :egy k a+-p1bhgzvvlcy:y 6y5/sy ; p) tripled?

参考答案:    
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage across a capacitor approach ,yh gw4/3gtqgb*myw 8es zero, the capacitive rewggh8 tb, 4w g*y3yq/mactance of that capacitor

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle between the voltages of the inductor and capacitobwsxy; 6vk:.2xa7q d yr in a Rx26:bvsawxyk7. ;qdy LC series circuit?

参考答案:    
标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The power factor of an Rix,dzm 8c+ ge,LC circuit is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the circuit increases if R incphxbwe3*yg /oug u. 4.reases. When is this statement trw.4*.gyxbp/e u 3 uohgue?

参考答案:    
标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the circ h zipt4.r+hvw 3rt)0auit increases if $X_L$ increases. When is this statement true?

参考答案:    
标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC series nbvg7*goppv: u: t0t*circuit. The impedance of the circuit increases if $X_C$ increases. When is this statement true?

参考答案:    
标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the inductance and the capacitancewh0u ;gbdi-3k both double in an LRC series circuit, the resonaiwb;-hg0kud3 nt frequency of that circuit will

参考答案:    
标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is driven by an AC applied voltage. At resz2u ns7y jiar)fh2-,,dzyt1 l onance,

参考答案:    
标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a series RLC circu/1z0mzkg zhwe 5t0jc ;it occurs when

参考答案:    
标记此题
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A flux of $4.0 \times 10^{-5} \; Wb$ is maintained through a coil for 0.50 s. What $emf$ is induced in this coil by this flux?

参考答案:    
标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10y f;hedt sh c361q0knzbrzj4 .f- 6l3f m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are paralleh szbf ffq43ye d 601n.3 -kz;cthl6jrl.

参考答案:    
标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radiusfn1 lmn-9:dyz 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop a :1lzyfm- dn9nnd the magnetic field vector are perpendicular.

参考答案:    
标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radtv a7bs+;qlfyt08i,x ius 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plan, qsvy7+ai8x0b;ftt le of the loop and the magnetic field vector are at an angle of $30^{\circ}$.

参考答案:    
标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The cross-sectional area of an adjustabl 46p1k yy/femamo6 ezza)6u,dt 6rb,le single loop is reduced from $1.0 \; m^{2}$ to $0.50 \; m^{2}$ in 0.10
s. What is the average $emf$ that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?

参考答案:    
标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil changes rm) d4fv210qz +aqfeafrom $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wiq3o*ojel6 hcm;q h.;k(lhh bjw-z,.vre on a square frame with sides 18 cm. A uniek (l-om;;hlw6q hh.q c3o jj. ,*vzhbform magnetic field is applied perpendicular to the plane of the coil. If the field changes uniformly from 0.50 T to 0 in 8.0 s, find the average value of the induced $emf$.

参考答案:    
标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square coil of wire with 15 turns and an area 1njld*+o x (kkof $0.40 \; m^{2}$ is placed parallel to a magnetic field of 0.75 T. The coil is flipped so its plane is perpendicular to the magnetic field in 0.050 s. What is the magnitude of the average induced $emf$?

参考答案:    
标记此题
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil of 160 turns and area l4e wtlbiy(n,m()ep8w,o 1 gr$0.20 \; m^{2}$ is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s. If the resistance of the coil is 16 W, at what rate is power generated in the coil?

参考答案:    
标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An airplane with a win4ewxyh56 m.h6,b 0bmkzwah,rg span of 60 m flies horizontally at a location where the downward co0hw.r ey 6bbkz h,xmwa h46m5,mponent of the Earth's magnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that dsu/13 m pte27czdu+r is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends t1esd/rz2 ucm7u 3pd +while in a constant magnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator hasn +gkrb ulytw8z5+ge/2nw g9r c+hu+9 50 loops and a cross-sectional area of $0.25 \; m^{2}$. What is the maximum $emf$ generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?

参考答案:    
标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consis;ws9/+ko 5nttt7tgwwg/r 4qhv:jh h3ts of 100 turns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rectangular loops on its armb0non-jj 5u22,vu gf q8 ntql9ature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about annq9 gb,u0 8j52u-jnq2lvtof n axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.30 T, which is perpendicular to the axis of rotation, what will be the maximum output voltage of this generator?

参考答案:    
标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 turns of wire of arean(0j bkolcl.yy t69eh c,:d/a $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to construct a simple AC generator with an output ozuu j0ht42 n 921hjzrcf 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If thjc 042hzuhujrn 1tz92 e area of the rotating coil is $100 \; cm^{2}$, how many turns are needed?

参考答案:    
标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a generator with a maximum xe1 ,/vehj2(hetd rqz)x s;y2 $emf$ of 8.0 V. If the generator coil has 200 turns and a cross-sectional area of $0.030 \; m^{2}$, what would be the frequency of the generator in a magnetic field of 0.030 T?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance of*1n-pm -smn6 (pwngvo 6.00 W. The motor operates on $120 \; V$ AC, and when running at full speed it generates a back $emf$ of 105 V. What is the starting current of the motor?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance of 6.00 W. The motor opeb-- y5 /zkkouhp/;w jhrates on 120 V AC, and when running at full speed it ge/p/z5- k ;kb- yhwuohjnerates a back $emf$ of 105 V. What current does the motor draw when operating at full speed?

参考答案:    
标记此题
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W 8)m8yb15opo t n,sdkuis connected to a 24-V power supply. The operating current is81bu kp8do m5nysto), 1.0 A. What is the start-up current?

参考答案:    
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistanc+ d;4x;)l-xlq qvnyz pbmo+g5 e 6.0 W is connected to a 24-V power supply. Thx) onv4z+- q g +;lmp5dlbx;qye operating current is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance sg1cyg)z*sn 34u,d hv 5 oa..evly*jf6.0 W is connected to a 24-V power supply. The operating current is 1.0 1*s. . vjh5z ny4*s c )uy,leaovfg3dgA at full speed. What is the back $emf$ when the motor is running at half speed?

参考答案:    
标记此题
76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A step-down transformer is needed to reduce a)c ;;roydv.w g primary voltage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

参考答案:    
标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2.0 A in the 100-turn primary of a transformer causes 14 A to flow in ttyk0ar-1es qrk x 0 uo30)f+smhe seconda0tf0s a3 kqoy0k+e 1usxm )-rrry. How many turns are in the secondary?

参考答案:    
标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, how many turns are necessary in z ohp8zl d;s1w/8x h+6yr2lca djr v63a 110-V primary if the 24-V secondary has 1hz2lj1ya;xzrw8 6d6p8 vh/ dcr o3s+ l00 turns?

参考答案:    
标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consizqvftk8unj e2el5: 6 ls6f+b1sts of a 500-turn primary coil and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is the current in the primaryf+u2561 fnk6v8e:seq tzjl bl?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.0 A at 110 V flows in the primary o,w2xf a;( eqvhf a transformer. Assuming 100% efficiency,xvf 2 qahew,(; how many amps at 24 V can flow in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer provides b,8c l.4lri pq(oqn)r 7500 V at 10.0 mA. The primary coil operates on 120 V. Whatc prq4 q l)in(8,orl.b does the primary draw?

参考答案:    
标记此题
82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil and 300 a-a0boqetu lya4 4l 92-x izj4u, 3pasturns on its secondary coil. If 120 V at 2.0 A is applied to9ui,3 j-- a2zo4q a4psxte4aby alul0 the primary, what voltage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary3eozm(yrihbs93kvy(3: a q 1ba+m kg/ coil and 300 turns on its secondary h13i3mob9 sg+ y3(v b/krmya aqe: kz(coil. If 120 V at 2.0 A is applied to the primary, what current is present in the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer knc0xjz0e g37 ey o; )6;p vdvj*pf+wktan4f 8has 100 turns and its secondary has 200 turns. If the input current atkn3fv+8 ojt eckvy*w 4enp67 ;g0)ap z0jf;dx the primary is 100 A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turns. w+s234yvn-kubej,s s If the input voltage to the primary is 100 V, we can expect the output v,4- +svu3wnjsy2 kbes oltage of the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has8*uxy1kd ix4-2 a enfr 100 turns and its secondary has 200 turns. If the power input to the primary is 100 W, we can expect the power output of the seconda4x2fu1nkx-ae*rd8 i yry to be (neglecting frictional losses)

参考答案:    
标记此题
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage1:juqobln 7e2 h+l fmrl.vc2( is usually stepped up to 4500 V by jvoel1qu22(: chblf 7n.l+m ra transformer and transmitted through a power line of total resistance 1.0 W. Find the number of turns in the secondary if the primary has 200 turns.

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 6 ,qk/6e gnbi a fk:ip-8smp4 +q2s3cky0 A of current at 120 V. The voltage is usually stepped up to 4500 V by a tr6+fp4kk8b3e c/ : - m,s skyni2qapgiqansformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The vojiq ljev-2/ wmhd9 3tct.( zk)ltage is usually stepped up to 4500 V by a transformer andt/ 9je .-(2vzwlqtkh)jdmc 3i transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line if the voltage is not stepped up.

参考答案:    
标记此题
90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission l0 )5of wpq4bbdine 50 km long has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer qb5b4o)f0 d wpwith a turns ratio of 100:1. What percentage of the original energy would be lost if the transformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km loz+:2gv lg4 c3o1 yihmox)4oz8*y j idmng has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is lm y i2lgv z8 +)yjxdmo4o* oi34hcz:1gost when the transformer is used?

参考答案:    
标记此题
92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  100 kW is transmitted down a 6-W line at 1000 V. How much less power wou a:r5rq w8d8vsp+sso*ld be lost if the power were transmitted at 3000 V instead wr+voas5 sdq* 8s:r8p of at 1000 V?

参考答案:    
标记此题
93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The output of a generator is 440 V at 20 A. It is to bdragb mqn4m4 *0 eitna f83q(y:-tm,fe transmitted on a line with resistance of 0.60 W. To what voltage must the generator output be stepped up with a transf:tq4,dr my4a0(iqfg*n3ea n- b8tfm mormer if the power loss in transmission is not to exceed 0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a currekf9(gwtpw gf 79k)irix7q:j +nt of 5.0 A. How much energy is stored in the coil's 7pjtrwg+(gx 9 q9 :)w7fiifkk magnetic field?

参考答案:    
标记此题
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains a 6.0-W ;8n 01y(.qj y3fioldfs qfq- rresistor and an 18-H inductor. What is this circuit's time constant?f-1. q0 yyo3q (fslrji8qdnf;

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
96#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the peak voltage v ;ewo7k) xvo6in an AC circuit where the rms voltage is 120 V?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC ozqy69n x -lfhea+ d*-hrwjj -2w*wcr,utlet. What is the peak current?

参考答案:    
标记此题
98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC j(sij/wqh-y0 t xe0 2ooutlet. What is the resistance of the lamp?e( ox0i -jh2t/sq0yw j

参考答案:    
标记此题
99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected tooqr,3ju6r97. yaf7in jvi0.i2di8f fm 5t tuy a 120-V ac power supply. What is the peak current through the resistoji.0r,t2 ufat ynf6d.9 vjyu qm 3f8iii5o7r7r?

参考答案:    
标记此题
100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected to a 120-V ac power supply. What is the power diy e hj5fu-ikt3p-*4msssipated in tju3m *5 - p-hetki4sfyhe resistor?

参考答案:    
标记此题
101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50- 7b,;zru ocp0fe e* ,;qtoy+zk+zzk:uW resistor is $I = 0.80 \sin (240 t)$. What is the rms current?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resistm73/z b6t)7ak opghapor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

参考答案:    
标记此题
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resistorg +r,9esnv* tt is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
104#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the reactance of a 1.0-mH inductop8lafjvrof; ,mru * x hw+750wr at 60 Hz?

参考答案:    
标记此题
105#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the inductive reactance of a f ktk5xhr25r3 2.50-mH coil at 1000 Hz?

参考答案:    
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will a 14.0-mH st 57-h/vp+t hgr wtv4coil have 14.0 W of inductive reactance?

参考答案:    
标记此题
107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary xekg 0cbn h,ko2,ki 2.:ztn(nfor 157 W of inductive reactance at 1000 Hz?

参考答案:    
标记此题
108#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows in a 60-mH inductor ws o7 r(vrmlij; e5ud, 4p86qvmhen 120 V AC at a frequency of 20 kHz is applied to it?ml ps o(8er7;6 ,vjmu5driv q4

参考答案:    
标记此题
109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 2.580l3( mfg8ally v1kbi 0-mH coil due to a 110-V, 60.0 Hz source?

参考答案:    
标记此题
110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the capacitive reactance p k*dq)0jiv-s,duv* jof a 4.7-mF capacitor at 10 kHz?

参考答案:    
标记此题
111#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor is needed to have 50 W of capacitive reactance :1r )oggw5mojfs* im )at 10 kHz?

参考答案:    
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-mF capacitor have a reactjs8zr pyw zj+n +w;g,anjl,uz ).;hw)ance of 1200 W?

参考答案:    
标记此题
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency wil,o k 6bj8k0 k8aet4/qepgc9dxl the capacitive reactance of a 0.010-mF capacitor be 100 Wek80e9 dkt b/ ,ocq84jp 6kxag?

参考答案:    
标记此题
114#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 0.0010bf;bd;ftn qocdd4(9) -mF capacitor at 1000 Hz and 5.0 V?

参考答案:    
标记此题
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of an ac series circuit with 12.0 W resistance,dx5tf s )j7 p heaa3t)cj9poq2wvp6+17l wfm- 15.0 W inductive reactance, and1fppqh9pj3w xaeaf-w 6cstm72o)+ld 7v t 5) j 10.0 W capacitive reactance?

参考答案:    
标记此题
116#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total impedance a7q7nojlv ne *e-pnl; wa9g 7+kt 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connected in sn n +pvon*- aj7le;ewq9l7k7geries?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
117#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle at 1ztl , h10jwvl:500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connect l0w:vlh1,tj zed in series?

参考答案:    
标记此题
118#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor iqibcl bk:;ob tt x2 *57 eyvt40/n/wois connected in series with a 20-mH inductor, what is the impedance at 1000 4:*ilt2itx 50w/eovtb/k qboc; 7ybnHz?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
119#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connect+-;nl:kz)f :dgbujufsq /p a2ed in series with a 20-mH inductor, what is the phase suj)l:f fp2bn+; z-gu /q adk:angle at 1000 Hz?

参考答案:    
标记此题
120#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is need ,xsd 8n w0xxiu1fk-p391uxwred in a series circuit with a 20-mH coil and 1.0-mF capacitor for a total impedancd83ux01-nxfkwpx x1 wr s,9 uie of 100 W at 1500 Hz?

参考答案:    
标记此题
121#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following capacitances is needed in seriesu4 3g us)rwnb* with a 100-W resistor and 15-mH coil to get a total impedance of3u4)r*un b sgw 110 W at 2000 Hz?

参考答案:    
标记此题
122#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance must be put in seriess8sc l mq,op +31+jryb)x szc2 with a 450-mH inductor at 5000 Hz for a total l+ xo +cmr,ss )q2s1zc83yj bpimpedance of 40000 W?

参考答案:    
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in series with a 100-kW resistor at 1.0-MHz forhxydo:6 7fxu1c9rn : q4o5pik a total impenduxkq 65xpr9o 4oicf 1: yh7:dance of 150 kW?

参考答案:    
标记此题
124#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected in series with a 20-mF capacitor. What is thi+chtnw6;1ujzwjh s */d 5 x0ue impedance at 1000 Hz?u *jt/;6n+wc dsj1h5uhzwx0i

参考答案:    
标记此题
125#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series with a 10-mF capacitor at 1.0 kHz for a4 xpnqy8ns a) 37asop; total impedancexa 8pqp nsa7sy 4;3)no of 45 W?

参考答案:    
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series with a 10-mF ta0ciw 4+)pdicapacitor at 1.0 kHz for a phase anicp+0d4 aw) itgle of $40^{\circ}$?

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
127#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with q-4jp raw4 q4ea 30-W resistor at 1.0 kHz for a total impqa4 qr44-jpwe edance of 45 W?

参考答案:    
标记此题
128#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is in series with a.9udc +jzqv(c m1np;l)gl5 el 100-mF capacitor at 120 Hz. What is the phasegpl. j(;) nq9 5c1 cmvu+ellzd angle?

参考答案:    
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V and 1500 Hz if a 100-W resistor, 2g; mlcn15t(: ilg vi:o0-mH coil, and 1.0-mF capacitor are connected in series?m:iv nig;gl1 ot5 lc(:

参考答案:    
标记此题
130#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit consists of a 100-W resistor, a 10.0-mF capacitor, amlsb(:f 49 gvid9z si+nd a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rms current mssf9dgviz i(4 9:lb+in the circuit?

参考答案:    
标记此题
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitor of capacitive reactance 30 W, cq5rxhv,m, z: and an inductor of inductive reactance 30 W are conn5:,mhc ,vxqr zected in series to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angleb s7 x0bzzk2x7 for a series RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H induc07bb 7 2szxzxktor, when connected to a 60-Hz power supply?

参考答案:    
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor for a phase jjj/b3 t(nkfou2 :b-nangle of j- 3bkbfu:n j/tj(no2 $40^{\circ}$ at 10 kHz?

参考答案:    
标记此题
134#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit hass) )yl kc xxiekmv, o/)8w)4jc R = 20.0 W, L = 200-mH, C = 10.0 mF. At what frequency should the circui)kx)cm),8y4icv/ s)lo xwjekt be driven in order to have maximum power transferred from the driving source?

参考答案:    
标记此题
135#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power output in an ac series circu sk1v7roau4 ;g x1g0zybzp- p+it with 12.0 W resistance, 15.0 W inductiv u zoksay1+ 10gv;rpx-g74zbpe reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V power supply?

参考答案:    
标记此题
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an AC circuit*8lpumtwy 3- *-rjzo x is $63^{\circ}$. What is the power factor?

参考答案:    
标记此题
137#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ac series circuit hasxn5:pfi2*wnfwnxe: v g0c9 3v an impedance of 60 W and a resistance of 30 W. What is the poc g 9nv*fn:xvxiwp3f 50 :2enwwer factor?

参考答案:    
标记此题
138#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power factor for a series RLC circuit containing a 50-W rb s8l az:nq*6tesistor, a 10-mF capacitor, and a 0.45-H inductor, when connected tb6q8:s za ln*to a 60-Hz power supply?

参考答案:    
标记此题
139#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the resonant frequency);vk(;gquooswo yp dl*4 iaok51zv- ; of a 1.0-mF capacitor and a 15-mH coil in series?;1 gl4v o;5* w i(;osokoqy)-pdz akvu

参考答案:    
标记此题
140#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is needed in series with a 4.7-mF capacitor for a resos3ftu. /k .jgj7 t;jizjdf1rr*cmja) yh;9m7nant frequency of 10 kHu ;dj/rgjhfrjs yt1 jkf mci) ;..3zja77m *t9z?

参考答案:    
标记此题
141#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in sgqy p4*onj1q(+5prf m2muj u1eries with a 3.7-mH inductor for a resonant frequency of 1000 Hz?o mu25gj+rf1mjnp4yp q1u* q(

参考答案:    
标记此题
142#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor must be placed in series with a 30-W resistgh735jk3ugy ror and a 40-mH coil if the resonant frequ 5 gj7rkuh33ygency of the circuit is to be 1000 Hz?

参考答案:    
  • 姓名:游客(未登录)
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题
    本平台(https://tiku.one/)支持练习，作业与考试(自动评分)三种模式，群组成绩统计排序导出，题目动态变量实现同卷千人千题。
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2025 题库网 (https://tiku.one)版权所有

    浏览记录|手机版首页|使用帮助|题库网 (https://tiku.one)

    GMT+8, 2025-11-28 20:15 , Processed in 0.719936 second(s), 305 queries , Redis On.