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
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 80 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；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。本试卷的直接作答链接 https://tiku.one/test80.html
 作者: admin    总分: 142分  得分: _____________

答题人: 匿名未登录  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 magnetic flux exceq15ze ; te**vr4jiymdpt

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 that thi/jfwglk3 i2x(0ny -le $emf$ 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 what kind of change oc1b +yv2 baqi gmai8,-n the inducedyca2g vb ab1i8m+ -iq, $emf$, assuming all other factors remain constant?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strengtvi 4gr-yz7/qbh of the magnetic field through a loop of wire produces what kind of chang/ -qi4ybzv7 gre 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 what kind of change on)lh 5vinuk.g: the indul .gvui5nh k):ced $emf$, 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 from a magnetic6p7z) g r)5ejc0ow mwt 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 i rf )24p qiy;g3z2kvqpn a conductor will be that which tends to produce which ofz vq2k4p3;y r q2figp) the following effects?

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 horizontal table. A bar magnet ip5x 5v7/l8 c bkq8kj** cxykwfs held above its center with its north pole pointing down. The stationary magnet induces (when viewe5xvl7cyk8 f**j c 8pb q5/kwxkd from above)

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 isi, i (i1g0bmsg held above its center with its north pole pointing down, 0b 1gi(gis,imand released. As it approaches the coil, the falling magnet induces (when viewed from above)

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 field vect167q72 unwhouk2dg yr or points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the senuo7 w u2r1n6 gy2hqd7kse 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 a region where the magnw ez+74 oai,era gh9p1etic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the 4 aep 7igwzoh+9ar1, edirection 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 whervzk r(ebvd j pz+);73re the magnetic field points straigz+)b 3rd j(v7epz kr;vht down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current 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 wire lies on a horizontal table and carries an (ml0xdjd ,gs /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 current0 (gjd/ls, dmx 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 pvgh5dhdth 7 j06 baf.90lxb*qole entering first. As the north pole enters the wire, the induced * q5hvhddlx hft06jba0b 9.g7 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 angular speed w(rt *6dz6:wu a4p -slg c2etwabout an axis whose direction can be varied. In a region where a uniform magneticas4wclwut (w-66 z2ep:d tg* r 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 wire is rotated at constanth9jdc0 *x :uizs/lw9z 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 0jw9 /:* xducl9szhiz if the induced $emf$ is to be a maximum?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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.t)6r92; pnz tir;t bysy u93nl1vvwd)
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 8. ex95lcnckb an $emf$ 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. dz o3c7ibf 4z- The $emf$ produced in the wire depends on

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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-w+hias rf9 ske8 rtk;.cb,hi:oh +, t5oest direction) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential induced ac : 5tr+ 8 ;,.o+hr,ktfsisbechhki9aoross 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 ba5fbl9fv eu7h0djk/ k4r rotates 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator trgoyz6jv0 (0bmansforms

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 thra1ydn /9gsn+use1;j x9p3ik mough 60 revolutions each second. The frequency of the ; eps9g/13nku xym idn9aj+1 s$emf$ 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 33:u hk:cz )prbvapg5to

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 thak+b8;-ognf 4bwh o+vvt

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 the secondary coil contains mob:/5y ase) sxzre loops than the primary coil then is/):e 5zbyxa st 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 loopstkt( dj6,p;i ff3 / co8gbtr3q than the secondary coil the,63 g(3f b kcoi8 ftdq/tjrp;tn it 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 power inpw g 0v+n+t pxwj1o)5/5djo zcwut

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 resonan9ws g *ixf8ct(*l as1vt circuit,

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 sec8j tis-:ti;-f l(ar wtm2: reries to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor is sirec(:t-ft t -:8ljmr2 a;wi

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 id x ol1-mly*w;;/8hcsyfew 5 ayeal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the f;ahwc 1yom esl-y x;wl/8y *5inductor is

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 consqn/ y/.,dmw, m.nmvpnected 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 inductany4ilchz 4 csqv/ *u,l4ce 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 induc* zkn56xa3d4vdbqu4s q b. sje 3pt64ptor are connected in series to a battery. The time constant for the circuit represents the time required for the current tav4k e6qzuqs4 * jp56 b3n4. tdpxsdb3o 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. Thm aeh)z/t--vw e battery is)meahw - v-z/t suddenly removed from the circuit. The time constant for of the circuit represents 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 hats7 j wq+s06veve the 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 thiszjp(kw i01c x a7,y8iau1ykg3 circuit, the current

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 AC power supply. In this circuit, the currey/2a ykcadieqm;m48v s1r6;u- kkcu3 n1- 6k8kcdvsymca43umqi/ ke ur;y;a 2t

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 by what factor when t82up a1hb,at eoax*r /bur:b ,he frequency is trpar8tuo*bu2ax be b ,r:h1/ ,aipled?

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 u t;m20g4ykexan inductor is doubled, the inductive reacttm4g2ku;y e x0ance of that 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 th1edvpvp+*8zeziks / (zat::l e AC voltage across an inductor approaches zero, the inductive reactance of that coi+ p kzeaz* l (svtid1:ze:8p/vl

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 circuit, the ctbdap3p 923 veurrenv bep9at3d23 pt

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 (f .d4j9h5gvg ogxsf+ by what factor when the frequency is tripsv5ogfgd xfhg9 j+ 4.(led?

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 volt )u4h:pf.ask-c ,l 5gashu.hiage across a capacitor approaches zero, the capacitive reactan:)5fa.h,phu a c. u-i kgh4slsce of that capacitor

参考答案:    
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 inducnhmk7*se*b m xmgn 2; y(-pbn;tor and capacitor in a RLC series circuit?ny(7*mxn bs- n;g pemb;2*khm

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 RLC circ0)q p5 jigmh6n*qnt *nuit 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 circu*2vw hi+,:u aktzz jae n1q+0cit increases if R increases. When is this statemen+nz0 *,jvc1 2aqtzh+ika: e wut true?

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 circuit increases if l5yk8sdj x88u$X_L$ 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 incr)ymwly :. m:fheases 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 h2ezjt.9twc ;(htw p/the capacitance both double in an LRC series circuit, the resonant frequency of that circuiec.(w; wttz/pjhh9 2tt 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 voltap1;*etpsx0 :-qza rfrv0 unq(ge. At resonance,

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 circuit occurs whc,n; nj9ck. 2dq /u.a0 ncab7kbq0ygeen

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 0.10 m is rotating in a uniform magneticfnkf28w:tzc5 xt,6n y field of 0.20 T. Find the magnetic flux through the loop when n z5862yfntwxk:t,f cthe 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 magnetic field of ufm d 8vk1;irzo n l(0,xys(w20.20 T. Find the magnetic flux through the loop when the po; (km 1yz(2xrliv s8fd0 ,wnulane 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 0.2ry6e+kr*2ff*h(j voe 0 T. j oyferr h+(f6 v2e*k* Find the magnetic flux through the loop when the plane 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 adjustable single loop is2d jaf,zl9sb3 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 ctk (j,a,:ot qqd4*lxi hanges 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 2005)moq*e q -nhpu4 xqc7/, ohwf turns of wire on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane oeh/ q pu,7hmo*xfn4qw5-)q o cf 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 ty)rac4vrzxn) f,/+k and an area of $0.40 \; m^{2}$ 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 aran 2apn3; fk7bwul.d0a/(r t yea $0.20 \; m^{2}$ 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 wing span of 60 js3 8r-c0j3x8bgziagm flies horizontally at a location where the downward component of the Earth's magnetb 38r-0 az8gcgs3j xjiic 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 rotatesmb 6fd.y3acg d0j(3ly at a constant angular velocity of 2.0 rad/s about a vertical axis throug0 j(m 3yl b6fy3a.dcdgh one of its ends 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 has 50 loops andqcp2m2mg:3)5 o7s77ows zih1yfpb io 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(r 3 8r4c.0ehcvq;mo l6omtnb 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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. v np) wszg/at(16ea+tzs6 2 g,qpijw/ Each loop is 12 cm long and 8 cm wide. The armature g, g/w(1 qnw2 t) pj v/ia+e6zstpz6sarotates 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 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 consw6l-bmxq9z/p ists 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 current.

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 outpum(ka9r pqa.b11itn.x t of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is available. If the area of the rotati 19(a1ax r mbintpq..kng 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 mahc hih9/s lc-*ximum $emf$ 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 motor have a, i13-woxl-hqaz 1yqa 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:    
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 ressm5sjc 3uz6*mrwwkir 5u;la8u16 q:distance of 6.00 W. The motor operates on 120 V AC, andl*3jrds 1: 55aurzwi8w;k cmum u6q s6 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:    
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 po 2e +)aiz1ko npqdj.m;wer supply. The operating current is 1.0 A. What is the start-up curr+. e21zk np oa;qijdm)ent?

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;6w 2e t mza;ngb-hfvpo55olj, jf l*7-V power supply. The operating current is 1. jhtz*waljpeg6- ml2 ;5n,f;bvoo5f 70 A at full speed. What is the 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 intern 9 s9b l7xbq:jkk76ldym8gklu/kv-a +al resistance 6.0 W is connected to a 24-V power supply. The operating current gb v68kal 7mlq9ydk ku+/sj:-lkb97x is 1.0 A at full speed. What is the back $emf$ when the motor is running at half speed?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 iy9;zjl2o er5o s 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 transformerc. jo,zpmm.-j vq.i 1 boy1.uq causes 14 A to flow in the secondymz iqoo-j 1. j.qcm,v1.pb u.ary. 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 necyjzv og1d4f qpl0s1e ;s/z6 v+essary in a 110-V primary if the 24-V secy6v1f/zvoq jpl4d ss10 ;gz+ eondary has 100 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 consists of aquj6hc;g-i*m3c m87xqii 1**dizfio 500-turn primary coil and a 2000-turn secondary coil. If the c*c*h7*iimjmxidi 3fouc1qiq- ; g6 z 8urrent in the secondary is 3.0 A, what is the current in the primary?

参考答案:    
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 of a transformer. Assuming 100% 4ai;zao zl )/jfs nqm4v2*82e;9jm nxzj 8wry efficiency, how many amps at)ew9 m2onjrzaz/laz f8;42vni* j mqjys4x;8 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 providecqdgdu. t nsz3ai/) u(:g1;gbs 7500 V at 10.0 mA. The primary coil operates on 120;b(.sg tingd1qcu/zug:3d)a V. What 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 tur7xkyr+ +6pp nlc a xedz981 b5x-nywm6ns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what5x6 ez n+ypa8dx n+1 pxclb69r-7wkym voltage is present in the secondary?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer hasd,wslgy p*fto 7rx19;-b bm) s 60 turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what current isp;bbs -7 to)l1rxw*,f sd9gmy 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 has 100 turns and 08*zo0wios crp(zs0 q/z2nsjits secondary has 200 turns. If the input current at the primary is 100 A, we can expect the outpu/wq 0 (0csj0rzipnoso8 s2*zzt 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 10k 5 70is3eo+s1:0rpb ayzwxit0 turns and its secondary has 200 turns. If the inp z7s: r31 yi0b aetix+0kpos5wut 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 l s,m qn2gg724bd4airbhc;l2 has 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 secondary to be (neglecting frictioqrn7lb 42 gb4hclid22; ,ags mnal losses)

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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. Thel. hm8lv6udw.6i icght ( fs9( voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resisft.6 w.lis6lh8h(i(c md 9 vgutance 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 60 A of current at 120 V. The voltage is usuallyqah.z3vr z( .h stepped up to 4500 V(harz 3.q.v zh by a transformer 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 voltage is usually steppvmydu r)5(7 ceed up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line if thdmeu 5y()rc7ve voltage is not stepped up.

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 0.60 W. A cv8n pwe -s4ppo*i 8;fgenerator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line,c8 wn4*v pp-fp8i;eso 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:zn0fcge,zmk +oq 2)q total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heazzq0,)q2foc +e: ng mkting 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 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 down a 6-W line at 1000 V. Hoyrz6;3 z jq+sgee+-c qw much less power would be lost if the power were transmitted at 3000 V instead ofzrj;+cq s qe-6z3+ gey 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+4w4 zc;51thdu oijagwnot/0ux48*uc, ph jq A. It is to be transmitted on a line with resistance of 0.60 W4opw0u1t,tdx 4i j4q ho/j+58nuw z;*c huagc. To what voltage must the generator output 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 current85v5 td+eua zk of 5.0 A. How much energy is stored in the coil's magnz55tv8ke aud+ etic field?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 resistor and an 18-H inductorrar48 a1 s)tr v4* ke1g*oh8gv +vbwky. What is this circuit's time consh18+g)vksgvoe 1a rav b *krw8r44y*ttant?

参考答案:    
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 voltagk1q:k z5 ;owhle in an AC 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 pe ,(j y bhzt4 x5vpub;4zmg09ncpjg;;mak 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 resistance oq spnq(45gaq y9thf1:s unvkei he 29fe4-4a3f the laqn419:e2(afahqqyv ft3 4en4ss-h gi p 9e5ukmp?

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 to a 120-V ac power suppv-6h6c8tjn8 5 pp,0kl a.r6xdvmddvxly. What is the peak current thr dhd.5 t8la0-xvjm, vnx6p8c vr dk66pough the resistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 * /y,f8ei o+qp nat)pcjnpr3- dissit)icnypo f,-pq8 j * 3anrpe+/pated in the 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-W resistor yx -6hm9cbfv;;f ;nk yis $I = 0.80 \sin (240 t)$. 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 50-W resistor is v5fs 2jb- 9rm/uyb7wy$I = 0.80 \sin (240 t)$. 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 resistor is uaf8 kj pk8cg1 5s8s8xv my:4l$I = 0.80 \sin (240 t)$. 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 i /v/* ugca/htdoms48z nductor 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 2.50-mH coil at 1000 Hzzi0sq m*c4n3ve:/q3 ns; rqz0w e*mab ?

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 coil have 14.h2dtb xf +tce,h/3f4rt 8 9zjq0 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 for 157 W of inductive reactance umzke;y-v 5nayw9t9+zv 5 c8eat 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 frequencyoocp*jfs (3 j9 of 20 kHz is applfp js o3*jc9o(ied to it?

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 2.50-mH coil due t n.dn/z*qe ;h+oeev/so 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 of a 4.7-mF capacito+cpx t.zyet:; r 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 at :kk / 5mxhc8 *q2brozup7u)jw10 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 reactancir3nw:qs 6 j/afn(k7 ne of 1200 W?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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-m2 .zv* e*2jghjgzncj,F capacitor be 100 Wvjh2g .ej2zngz cj **,?

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 0.0010-mF capacit7n2tax7g1ii n8 ) jrgfor 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 vz4p /3jxptc *with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive*ztj /cp4x vp3 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 at 1500 Hz ifncvz: n.7w0-7 nusxmj a 100-W resistor, 20-mH coil, and 1.0-mF ca7xzwsmucjn0 v :n.n-7pacitor are 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 at 1500 Hz if a 100-W ij( *ek awf20 e0urwu(resistor, 20-mH coil, and 1.0-mF c02ia*(weuj k wre (0fuapacitor are connected 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 is + gheae:pvh+gy t eok1 + 78i2hv;w/uhconnected in series with a 20-mH inductor, what is the impedance ae1a7og:+i2+ uhp+hveye k w hv8/gt h;t 1000 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 serq9;ra*z8hsht5vt v *ries with a 20-mH inductor, what is the phase angle at 1000 Hz?sa59 t*qzr;v*htr8hv

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 withb;c9.a8o o y3 kfp(zikup 9go)r,mx( c a 20-mH coil and 1.0-mF capacitor for a total impedance of 100 W at 15oyu9 x)9o8a(c,o;kpk (z p fcgrib.m3 00 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 iu7 g.+hcc(sf+6diwl -b8 ;f7 n2mtbq6pjq o czn series with a 100-W resistor and 15-mH coil to get a total impedance of 110 W at 2000 .wdt7-zf2c lgb( 7pu+ o6nqbmhsc 6iq8j f;+c 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 series with a 450-mH inductor at 50hbwn: yyc2v 99l.gqei2ojp6) u2t c c700 Hz for a total impedanc2ijq7 9el.ohcu9pcbv)tg2 wn 2yc6y:e 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 gu:tbq 9q-: urk7o7c jbe put in series with a 100-kW resistor at 1.0-MHz for a tot buor 7tu9- j:qq7ck:gal impedance 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 thuwod7y5v4n4 +0zhkx2dj,d toe impedance athntju7y420dxvw, 5do+z k 4do 1000 Hz?

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 ses, jum*by1m/e ries with a 10-mF capacitor at 1.0 kHz for a total,y1*umsbej m / impedance 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 slz ed8nqhu5w,p(px - pxblw *q *5w2e9eries with a 10-mF capacitor at 1.0 kHz for a phase anglel hp8w 2(*p5p-w5bu*eld9e q,zxnqxw of $40^{\circ}$?

参考答案:    
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 resisto6 of 6yduu22e rxqu/pvq248iwr at 1.0 kHz for a totale228fdvq4qo2 p6w/6 y uruuix impedance 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 seriesalxz,x y(yo /b*wp13x*o; obi with a 100-mF capacitor at 120 Hz. What is the phasexi(x ;woaplo,o3 x/byy* 1zb* angle?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 rc -4jpw4ad8nw esistor, 20-mH coil, and 1.0-mF capacitor are connect-jac4 dwn8 4wped in series?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 1063udpcc:8 txxfj : q0u0-W resistor, a 10.0-mF capacitor, and a 0.350-H inductor. The circuit istux: 308fdqujcpc x6: connected to a 120-V, 60-Hz power supply. What is the rms current in the circuit?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师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
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 ort - ku3bf)cd,o bxa1* bir62af capacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What current flows in this circuitr- tu3bi bx2*1ab,fk o) dr6ac?

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 for a series RLC circuit containing a 50-W resxh1zsu c,+a cg(w,qdf. s kj/ :id(h:zistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a a+siqh:z ,h w,u.1gcjdc sdf kx/:(z( 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-Wv cy.e8/:kog7g jz w4e resistor for a phase angle of w87c.oe gyjkz: gv e4/$40^{\circ}$ 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, L = 200-mH, C = 10.0 mF. At what fre yuri h46proao4+aa29t(yvbg*) y 8rbquency should the circuit be driven in order to have maximum power transferred from the dru(i64o ybpgvb2 +ry4 ar8)a y*h 9taoriving 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 with 1r4y j ,m.jnf,u2.0 W resistance, 15.0 W inductive reactance, and 10.0 W capac ymjnr4.f,,ju itive 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 circu tvwr1e 85:ndhit 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 ha4pks kg59p zbi(lreg-c, *mn2s an impedance of 60 W and a resistance of 30 W. What is the24b9g,sn5l(keppzc i-kgr*m power 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 a5ajty*d kny7(gsj + ;phldy *(qbh38 z 50-W resistor, a 10-mF capacitor y;ybhatjy3qlzhd ks( gd75j8(*n* +p, and a 0.45-H inductor, when connected 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 o.t(mh2y (lphol ;pme)c 5ci z7f a 1.0-mF capacitor and a 15-mH coil in series?z2t;c pp lo75 im)h(my( el.hc

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 sersc 9n)vr1k o50hm re0cies with a 4.7-mF capacitor for a resonant frequekoh9 0cec5s )m01rvrnncy of 10 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 series b t sev:9:k0kuwith a 3.7-mH inductor for a resonant frequ:tu09vb skk:eency of 1000 Hz?

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 resistor and a 40- 3w:mk9dyk5jvx a/l9m mH coil if the resonant d mkv9k95wj /x ma3ly:frequency of the circuit is to be 1000 Hz?

参考答案:    
  • :
    •
    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
    本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
    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!   © 2024 题库网 (https://tiku.one)版权所有

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

    GMT+8, 2025-4-4 06:47 , Processed in 0.737184 second(s), 306 queries , Redis On.