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* x)6llc2tkmq,*x),snz n stu of magnetic 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 statesz*m,xn k+n:axkk3z)r) 7q kvzh ihc77 that 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 in a coil produces ljf j 4+u):hvjwhat kind of change on t :j4)jl+hjfuv he induced $emf$, 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 of wire producespu /.lrr6ejb . what kind of changb ru.pr/6e.l je on the 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 a loop of wire produces whg*8 -dus6qrc +c hec2ad,9mn oat kind of change on the induced 8ga62*,-ed s hcnmc c+9 uorqd$emf$, assuming all other factors remain constant?

参考答案:    
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 from9j1cxly9 vzqkj5dx h.vo )m-1 a magnetic 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 i*u6fk xse+unuov,p+q a n(gjr k+ ufo0) o+f57nduced current in a conductor will be that which tends to produce which of thv nuf *o6uk+ufnog+s7( u0e,apko+j r+ 5q )fxe following effects?

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
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal h ab/+;1g zewls0gnnmefmxe 6t97 1o.98dypj table. A bar magnet is held above its center with its north pole pointing down. The stationary magnx +0h n7o9.pe s6a1gyn9ft; g1d bw8lejemm z/et induces (when viewed from above)

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
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/v( bt3vkns ,ruy4wcq p,y dh4 gyg:98 bar magnet is held above its center with its north po3typqnb 9gvh,kdrgc :( ,/yw y44suv8 le 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 topx8a 783fy*o z sjwta5j in a region where the magnetic field vector points straight fa8azy 8w tx5o7s*j3jup. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field 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 level table top in rvye/ ts6k qu*l ,e5,ya region where the magnetic field vector points str, ks,y u5lvty*eerq 6/aight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induced current in this coil as the field increases?

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
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 r8k,q,v*b/, vj g 0u a.iyugp lh1clk0ay;s5tqegion where the magnetic field points straight down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced curv 1,kl uy 8g.pqgkbycs,/5 la0jtaqv 0h*,i;urent in this coil as the field disappears?

参考答案:    
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wiremygncb(1y0s aqyip+ad kwt(d2q7h z8;8dt, 8 lies on a horizontal table and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the induced current8;s08qmq,tzyb(7k g (it1adp yh 2cdynwd8+a circles

参考答案:    
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 through a loop of wire with the north podx585ic bvzog 11c .fole entering first. As the north pole enters the wire, the induced current will be gx1bv.fd58o ic5cz1o(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 oucbjd6t qry01 1.o o.2 zq;xfangular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the q0uoxcob .zrf2q dy. oj1;t6 1orientation 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 wire is rotated)umj)esy / lg7 at constant angular speed about an axis whose direction can be v)e)7ysmu/glj aried. 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 induced $emf$ 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.tgd.8jh24kk tqc tyv 8h 5-1i jbxil,r *q98zc
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 that anq5xvqg.e d,: 1oze ;b w2xqb7t $emf$ can be induced in a loop of wire.
参考答案:    

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 magnetic field. Thzq0z1a+wh* i+w noj+l e $emf$ 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 directi*lbl u(jn)ts. on) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement conljust)l.b* n( cerning the potential induced across the rod.

参考答案:    
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 rotates at aa,q1(nx2/yq+ wc muyvqe2 lr1:wl 6 zj 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:    
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
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator transformjx i+ 4p3d*xgis

参考答案:    
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 ta6r d);sa.xj second. The frequency of the j a.astx ;6d)r$emf$ 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 de 7-7ebnc ik(* rhdx-x7 aup0mpvice used to

参考答案:    
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 device g * x1kbfox1u5that

参考答案:    
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 b. w9dyi dd*(le )lrbx7/ tdg6the secondary coil contains more loops than the primary coil then it/let.9 db7 bxidddl)r (y* gw6 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 loopqbu ybdxxka4h;*o8xq yb 52m 46d5 vq1s than the secondary coil then it is* b d65x5uxvd2hy4;qaqobb8xy q4 km1 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 power ii(i5r u gp2e3nnput

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 circu ,y*t 4s4 j6zdgci+ v;kcsb+zcit,

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 inductor are connected in series to an ideal battery2kf 9z wnu tump+8;0ed of constant terminalue f8pztwd2 9+mn ;ku0 voltage. At the moment contact 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 s9 mi+0 rezzlgjm7c -kl2 +9yeheries to an ideal battery of constant terminal voltage. At t kh+z jlm7ge2lm9ri0 + -yec9zhe moment contact is made with the battery, the voltage across 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 resistance R is connecteu 3 bqhsy:ab/*x29nz (xecb v-d 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 indu,z ,;o,4y *b,uygvbmp udi i-zctance L and resistance 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:    
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 inducto:mk. k(u, cq./x ;+scrwsbzlxfp0,ldr are connected in series to a battery. The time constant for the circuit represents the time requpz;l.x cmq+/,0(cw rfdk,ss.lkub: xired for the 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 series to a battery. The battex :9o .kllkr3qry is suddenly removed from the circuit. The time constant for of the circuit rlrkxkl.o39 q :epresents the time required for the current to decrease to

参考答案:    
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 t*y( bq 8vd,pzc(fq)uthe same units except:

参考答案:    
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 tbb) bi u1oxx*mw810 jxhis circuit, 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
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC power supply. In this circuit, the curbjb5. 5cpxfpe6p ;3q wrente .bxp; 5j3cp 5b6qwfp

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 reactansf zrtfh7z gy5xhdk0,ve0+ln* k8; k /ce in an ac circuit changes by what factor when the frequency is k ksh /*7 zh ger0vz+ly5,t08xf nfkd;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 induw8u f73w9f yhlctive reactance of that inu7 8 3f9lhfywwductor

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 voltzpo ro ,oez wg o(5x-s+oxx.54age across an inductor approaches zero, the inductive react5pxoeo5s4 xro(ozx ,.ow-z+ g ance of that coil

参考答案:    
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 this circm ym2a hr/:me*z8 jgy/e,dcf;4g,ow nuit, the currentmenyzewh;:*j /amrf 8 yd,g4/2gocm,

参考答案:    
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 circuit changes by what fact/3i(lq ,7pfsvp bqf 4eor when the frequency/7 f4pfle(p iq,v bs3q is 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 Apb/ qj3l+see y 1,1q t9mkg r-dwk3dn;C voltage across a capacitor approaches zero, the capacitive reactdnt ee-bqg 3 9/rw1 ,1 ljsym;+qkkd3pance 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 infd 2;q ypr6ve3ductor and capacitor in a RLC series circuit?df vpq63ey r;2

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 aw,paogx92 3 eny9w 1lisof d:,n RLC circuit is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

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
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedanhk18 eovu;2w w .93 7iocfo mbm86evgjce of the circuit increases if R increases. When is this staoc;e uwob i 9mf1j82om68kehv vw. 73gtement true?

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
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impyd:;)/ h* we o+7wpcte;e lmtwedance of the circuit 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 circuit. The impedance of the circuit increases if m-j ben+*c.7vajs kxoe6x6dg5r+am4 $X_C$ 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 capacitance both d9txdqaaahl(qql4ob-) 8lu2, ouble in an LRC series circuit, the resonant frequency ofqq8hlqoa u ( 2al-l)ad4xt b9, that circuit will

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
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 resonajjo:r6i,hw;h a1x9iqb2 *dc pnce,

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 seriev 6q:4sdg(imrs RLC circuit occurs when

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
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 0.10 m ih ;vp0wf7u/,ku mehu p-vv:4 is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when k u,;u/m ewfu - hhppv7i0:vv4the plane of the loop and the magnetic field vector are parallel.

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 radius 0.10 m is rotating in a uniform mag- d-w ;dyy:*tsxv86gl rwjd- tnetic field of 0.20 T. Find the magnetic flux tsd --r:t dxyl ;yg8*-tdjwv6w hrough the loop when the plane of the loop and 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 radius 0.10 m is rotating in a uniform magnetic field of 0.204-.l n mp/jnfx T. Find the magnetic flux through the loop when the plane of the loop and the m.x-nmp j fln/4agnetic 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 hg gzwr8zn2v0;ah ( (cb(po:farea of an adjustable 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 chang-sgvod* xf5p ;cg07sbes from $4.0 \times 10^{-5} \; Wb$ 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 wire on a square frame w3 dbuub law-.+ith sides 18 cm. A uniform ma3 +dlu wubb.-agnetic 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 of7mn) /4o sicbs $0.40 \; m^{2}$ 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 j n)sf f/v 4f-s.qgbyl(k6q8garea $0.20 \; m^{2}$ 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 winx obzm:(v nb9*g span of 60 m flies horizontally at a location where the downward component obbv z xn9om(:*f 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 is 2.0 m long rotates at a constant4 mwy .eq vw)r// .* hj5)owqraqc+gpx angular velocity of 2.0 rad/s about a vertical axis through one of its ends whiljm5)wq*4rghwa qqe//xro +) vw .p.yc e 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:    
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
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator ha9jpbpz:jat1v /ax 2s 0s 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 consists of 100 turns of wire nbxua0a b0zh d .ii sp4/d8/6qof 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:    
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
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 armature. Each loop is 12 kiw2;zi ch+a 8n3k6mg cm long and 8 cm wide. The armature rotates at 1200 rpm about an 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 t m+ 6wic2iang3kh;k8zhis 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 aymfnw:o-o yco0c/a04 0,gzo - fsafap5sf4 2mrea $0.090 \; m^{2}$ 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 oqr qg akqu1 ams0;ys//5t.5ndf 12 V maximum when rotated at 60 Hz. A mauqtkmy/0d;5q r5qsg. / 1na sagnetic field of 0.050 T is available. If the 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 generand 3p,d2 mle 3bux oue;5me.gf,-yw k)tor with a maximum $emf$ 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:    
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 motureacedfvm:vpv xb/pl5ih 85 5 71/ 3ior have a resistance of 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 moto(s0t a vlm3f+mr have a resistance of 6.00 W. The motor operates on 120 V AC,m f+ lm3v0ta(s and when running at full speed it generates a back $emf$ of 105 V. What current does the motor draw when operating 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
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 is connected to a 24-V p8t5ndi82mzci 0y:ig kower supply. The operating current is 1.0 A. What is the start-up curdy g8ici kzi :2n5m08trent?

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 resistance 6.0 W is connected to a 24-V power supply.f9oy6 otmgq 8n)*m r1s4 b.svv The operating current is 1.0 A at full speed. What is theots .vbmyr9v8o)qnms gf 1* 64 back $emf$ when the motor is running at full speed?

参考答案:    
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 6.0 W is connected to a z8f h-jglhlz *xv ;(6t24-V power supply. The operating current is j vzg8hl*tx6hl;- z (f1.0 A 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 transforme,abjsl s+zi1; q+sz0 p2mj dit82nf-mr is needed to reduce a 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 cau/9)k9 knp if :jbx+;t)ysuk qeses 14 A to flow in the secondary. How many turns are in the secon9bkqkjpt ;yxs u+)k :i)/e9 nfdary?

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 a 110 ge/-pa.q(jb0 9xt bgg-V primary if the 24-V secondary has 100 turns?.jg0etqg- 9x /gb (bpa

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 consists of a 500-turn primary coilaqv6zi; gd:q9 2p65; g jkbo2yo,nxrk and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is the current in the primgnkdv,ozkpgo:qa x9 2 6jr;;6bq5y2 i ary?

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 v + xraiu25 :wl4r.ahfprimary of a transformer. Assuming 100% efficiency, how many amu+r54alx .r 2wf:hva ips 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 7500 V at 10.0 mA. q(j. w1if/8akhuknr, The primary coil operates on 120 V. What kf/(riuk1j qa,w .hn8does 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 primaryny2wx6 kfuu3* coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, whxfn6kyu 3u *2wat 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 primary coil vchqn1xe: .i98jd 6kw and 300 turns on its secondary coi h:evcw 6q dx9nkj18.il. 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 transformez.crc g bh,-nwyh*f3i(b g9f.r has 100 turns and its secondary has 200 turns. If the input current at the primary is 100 A, we can expect the output current at the seconc.b(hzgh rcwfb 9f y-*ing, .3dary 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. If -xs gktdy.tw/u ;*p.hthe it.dt/ph k-u.w x;ygs*nput voltage to the primary is 100 V, we can expect the output voltage 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 has 100 turneo xg9,a t/fh5s and its secondary has 200 turns. If the power inh/,f9a oex5tg put to the primary is 100 W, we can expect the power output of the secondary 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 3 yafn4 9d bd;re:rcgo8g7)1x.kd: awfhwb3gof current at 120 V. The voltage is usually stepped up to 4 7ykfwgaf9cd god.e wba3h4)r 83:d1 :xnr;bg500 V by a 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:    
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60gr)+jrz v 6keax0l:4u A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lov4uzrxe+) gl k0a6rj: st 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 curre vvr* i:llj q1r69xn3bnt at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmii3 xlj b6nr:vr*lv1q9 tted 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 line 50 km long has a total resistance of 8i2b v urn-8hi0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line-rh2n ibv8i8u , the voltage is stepped up with a transformer with 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 long has a total resistance of 0.l0j lj)e e 8/n3)3c ydhqt:jsnygmg6260 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 witlm3gj :2)gcjy6 y0s/ q3d) nheejnl8 th a transformer with a turns ratio of 100:1. What percentage of the original energy is lost 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 0l:3nq3zpc7g adwvb 8 down a 6-W line at 1000 V. How much less power would be lost if the power were trp vq 8aw0czn:lgbd733ansmitted at 3000 V instead 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 20nd hd dxu1sied:-f(+7b 0ac p* A. It is to be transmitted on a line with resistance of 0.60 W. To what voltage must the generator out:hc1s-d+dx0dd i*pafb 7 nu (eput be stepped up with a transformer 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 current of 5.0 A. How much energy+1tphf 9s)k+: ny80capjggtq is stored in the coil 0+g9p: k)q8 ptaghfs +jtn1yc's 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 resis4+hr+hoij 20h (stiq xtor and an 18-H inductor. What is this circuit's time r4 s to0h(+qj2hhii+xconstant?

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 in an AC* /ht:akzyc5r circuit where the rms voltage is 120 V?

参考答案:    
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 outlet. What is the pexzq)e ) 8yw65byc*qzh .5rb xfak 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 outlet. What is the rh eaa64gki * y3wxw0nc7h8mv0 esistance of the lamp*cekxw3m6vahwi4h 708 a g0ny?

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 connectecf df)ec wi//6d to a 120-V ac power supply. What is the peak current through th//w)e6cidffc e resistor?

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 1/i 6reg3rt w0 ddxlg1(20-V ac power supply. What is the power dissipated in the rxde(rgl1r/i 30t gw6d esistor?

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
101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W m: :(/ ezs5p :ycgtn*poxj(zmresistor is $I = 0.80 \sin (240 t)$. What is the rms current?

参考答案:    
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 j+00 di qtdx-kh 6i4iehszn2a lvuj/;59zn :x50-W resistor 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 l93ho2jwpifqwsl*cq. ,q4) W resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
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 inductor at 60 Her j3v 2lza7rcn60r:lk..- rc3scsk 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 2.50-mH coil at 10wbqzvv87t v luue .sa)5;n33vy 4ii5i 00 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 xw*o8qlyj;n 8 coil 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 necesslsj86l e 6uz nrnk+0t)ndwzgt 2b5:y)ary for 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 when 120 V AC at a frequency of 2z u6aly-xrl ;4u 9mer*0 kHz is applix *azuy-l9e;4r6ulr med to it?

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
109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 2.50-mH coil due to a(/zq gpwppq0; 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 of a 4.7-mF ca9qxo35w-vdph pacitor 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 oodf9ma. uj s/k- 9pz8o /d9aaneeded to have 50 W of capacitive reactance 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 br:vrhz qz;:gwln1u)7s-j e9 a reactance 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 will the capacitive reactance of a 0.010-ed4jbtwz,h/ (y+ hc) mb/bhx;mF capacitor be 100 W h/(bbc zwxdmeh, ;)bty +4/jh?

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
114#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current thro9e4nrqvg 7bud0(o8 od:bqx8 jugh a 0.0010-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 wpi-4v5 xw3w/ zl rglm1ith 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive re5ixg-314 wl vmwzrpl /actance?

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 at 1500 Hz if hfattlk5r7 75w2 m /gha 100-W resistor, 20-mH coil, and 1.0-mF capacitor /k2a577h5rtw mhlgtfare connected in series?

参考答案:    
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 rwo(gh2t3 mu- 0yovk- at 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor ar0h outk32 g oym-r-w(ve connected in series?

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
118#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connected in series with a 20-mH inductor, what is the v4 z.h0n/vr soimpedance at 1000 r. n/h4voz0sv Hz?

参考答案:    
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 connected in series with a y//1yqudih-w20-mH inductor, what is the phase angle at 1000 Hz-/1yudi/y w hq?

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 needed in a series circuit with a 20-mH coil and 1.0-mF capa7eap5akf/6z +ucp9p n*zx h;s(a4 w wzcitor for a total impedance of 100 W at 1500(4+f /*;hwpauaz7xz9npze6a psw5 ck Hz?

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
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 series with a 10 ogl8x o+2wc 7yy4jh od;6kgma4 j2iz;0-W resistor and 15-mH goy;ywho;o67m4i8az2gc j +4xkdj 2l coil to get a total impedance of 110 W at 2000 Hz?

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
122#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance must be put i , xb83afuais*rs:u e; *pddt1wl8 4tkn series with a 450-mH inductor at 5000 Hz for a totalu a*;*tes: d4 fu,ailk d8pw83rb ts1x impedance 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 b* rak:p7c e1xbe put in series with a 100-kW resistor at 1.0-MHz for a total impedance of 150 kckre7:1pba x* W?

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 seriezn5.x) dyfua1s with a 20-mF capacitor. What is the impedu1)y 5dx.zna fance at 1000 Hz?

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
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 capaciy :-v w0/ xzq2dhmxy/.8 lmkoltor at 1.0 kHz for a total impedance of 4k:vymx/wyo /0l- ld2 .8zhqxm5 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 16qffgocxc+ 4 + /-bpgl0-mF capacitor at 1.0 kHz for a phase an+fpq- g4b+ o6fgx ccl/gle 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 a 30-W r wi3st:k- 1hhjs2 +b6apqim8 hesistor at 1.0 kHz for a total impedat p q38m+hjah s:i -hk2is61wbnce 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 100-mF cap q5ghe -* d2d(/ ,dimt0r ptt0o;dcy c/grn+esacitor at 120 Hz. What is the phase angl0* 2+ints (e/ 0tytced;dco5m/rg,p gd-dqrh e?

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, 20-mH coil, aqq mwhwq45h;:nd 1.0-mF capacitor are connecte mwqhhq: ;qw45d in series?

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, 8d,2duhwmphh-,rgd ;a 10.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rup8mhd d2,;- gh,hdwrms current in the circuit?

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
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitor 4:y hyp7v0fso of capacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 4v:yoy0hs7pf 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 angle xt -2m4 k.btie65y fwcfor a series RLC circuit containing a 50-W resistor, a 10-mF capaciw-4.x6ke5ybtt mc2f itor, and a 0.45-H inductor, 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 seriqity,iod g.w0 65h jj8es with a 500-W resistor for a phase angle of 0j8gqjdiit,6h 5ow y .$40^{\circ}$ 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 has R = 20.0 W, Lez :r/9b (bgpq = 200-mH, C = 10.0 mF. At what frequency should the circuit be driven in order to have maximum pog:/qb9 zpr( bewer 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 circuit 4o2737lyn c-nho,sk km.v,zk /vt bhc with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capaci nzy hcm ,v4. nothko3cbl,ksv2/-k77tive 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 circuit35vq2 zxr6 .zitaenqqwy1 6;vo cy-q) 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 has an impedance of 60 (htu pblb csr3;p-4p:W and a resistance of 30 W. What is the power;st r (p-ucphb4l:3b p 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 facpya :tda q7t 9f,vr/u;tor for a series RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60/,aypa t79v uqf:;dr t-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 of afba+ vbrzykh46p777 m 1.0-mF capacitor and a 15-mH coil in series?4m 7 +v7p 7ahr6yfzbkb

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 b0n/d x kr:8cga 4.7-mF capacitor for a resonant frequency of r:cxn80k/b g d10 kHz?

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 sel8av 75kxy* ,x: mdqe8 lkny4tries with a 3.7-mH inductor for a resonant frequency of 1000 He*8ynk,x7l ayd kxm v45:q8ltz?

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 withvg6vjrq u 2bn m;l0yzyldl(::i+ )e5h a 30-W resistor and a 40-mH coil if the resonant frequency of the circuit is t 6ie0jz+lv:nl5h:m)y ;yqbd2lvgur ( o 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, 2025-11-22 07:25 , Processed in 0.717151 second(s), 305 queries , Redis On.