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 magnetic fluxg f.b30 s,*dn ovz+l3 d-meinx except

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
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction states thatf;v*ay tn b1.s 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 cx , z3or6uk9e:3nsbo3o -zj k5 zcd-lyoil produces what kind of change on th 6lb5-: 9zo,33ouzr3 djk ckxne sy-zoe 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 x8qb knzeg,m..e0 3 lbthrough a loop of wire produces what kind of cq8.z,neb e 0x.k gb3lmhange on the induced $emf$, 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
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 producw6w7c.bvw(a. if7bk,o / ntzjo a20td es what kind of change on the induced i6w(o,ok wc2vw d/t77a.az0.fnbbt j $emf$, 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 magnetic fi.9ysvj dkrq1 f7otc(:eld 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:    
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
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 c1 )fd cvz+l cq6, 4eyog/u .ea6u+qzsvurrent in a conductor will be that6+z+.g6y1 vq fuacs,/q eo eu4) lvzcd which tends to produce which of 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 taz7 dx+z3a-t,m / hlkdm5u 4niko9bj; kble. A bar magnet is held above its center with its north pole poin5bdt;3ixl -o9n,mha/k ud4jkz+ 7kmz ting down. The stationary magnet 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 bar magnet is n 9:qaxs .2ybv)tfs3y held above its center with its north pole pointing down, and23y9x : .tqfas)b nsyv 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 thed 1:.qv; ilcau magnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in thisv:adi .;qcl1 u coil as the field fades?

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
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 magnetic field5uplo(fea)4e (zv9h zh8h 9dq vector points straight up. The magnetic field suddd9 zl ae8hfhz)((v9ohq4ue 5penly 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:    
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 /cn6teh6 b6kvc field points straight down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the inek b6n hc6/6vtduced 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 tableb/2a/rf;(a9 * w kz v (vu:mdbye0vriv and carries an ever-increasing current northward. Two coils of wire liek a;a:/vrb0 2 yz (ef9b*muv (i/wvvdr flat on the table, one on either side 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 throuc k3k 4e/8 avam8nqsdlec0 -d,gh a loop of wire with the north pole entering first. As the north pole enters lcd 8vanmk-se840dk /qe 3c, athe wire, the induced 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 rotat d7xxe8zof(+c ed at constant angular speed about an axis whose direction can be varied. In a region whercze+o( 7x 8fdxe 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 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 rotac+.zuit 8j f.pted at constant angular speed about an axis whose di .uzp 8ct+jfi.rection 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 induced $emf$ is to be a maximum?

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
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.zomxwe90nsd 64 ;a;ksld t6t kbh*s4 6
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 aim)/cx z0 3owwm4;vl) ew1ejy n $emf$ 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 magy:x6j +1)es(xjn w9qn mdrl-unetic 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 i yi/(ck )g:rcyp+ +q2vm1zeoeast-west direction) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential induced acro:poic)yk e ++zqv2iry1 g/cm(ss 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 a constant angulary*kwo trd g58*e2yq4v 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 fev- t82w)/os)mhai r;j: mxttransforms

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 gh;jx( i 1t2lmrevolutions each second. The frequency of thxml ;1 tihgj(2e $emf$ 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 devicec7 9 vaannzbhu ux-xqn04u-j,7, pjth*1 dpv. 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 deviceoagh59)mkz0 k that

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 more loops to*r1,m s dc3 *vxjcyl//lofw 3han the primary coil then it is y oo*3, /jm frlv1x3c/sdwl* ca

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 thelv *kn3l6ve6s jky)2 o primary coil contains more loops than the secondary coil 6yj63 es ovk2nkv*l)lthen 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, tht0bl3u qcp6 ;r h,s 0o8f6rylpe power 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 c j 2,8gp8yfgicircuit,

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 co m-izktg)/e l2e2*fwbnnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the k tem)*2 w2/gf-eiz blvoltage 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 /fk5.ila kl a5are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the volta/aa5iklf5 l. kge 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 resistub(17q fuvq( v7fw q9cance 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 R is connected 3hc )i 34a)w/oqt5 mtk4ulil pto 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 inductor r*s0gnc*sou 4 are connected in series to a battery. The time constant for the circuit represents the time required for the current tr c*4so0s*nguo 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 battp+64l p: (1ntzcya/lzhcxy1xery is suddenly removed from the circuit. The time constant for of the circuit represents the time required for the current to d4nlp6 t1zpcxz1 ycah:/l y(x +ecrease 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 the same units exc5 o ikhn(pa2t:ept:

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 this8bwncq;s.tz )rav 3q7 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,o/ z6+ -osc9cavq 9t/u8ay bqfo83 kzn the curren to/f39cqo + z n-yuz/6koca9a88qs vbt

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 x:az w(* 100okhjuwif ac circuit changes by what factor when the frequency is tripleawjizokw h(u :0*f0x1d?

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 inducb;wpa33v g qrre 4/)pvtor is doubled, the inductive reactancrpap43; qrgvw ev3/b)e of that inductor

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
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltaga(yxl98r 1qw ae across an inductor approaches zero, the inductive reactance of that co1lr ay9(x8qawil

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 powee vz 8z p/d;*yflkh;1cr supply. In this circuit, the currenk/e ;zd*vzhp1lyf8; c t

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 n ;-z 6aub,qkh)eem ntcm7e18 in an ac circuit changes by what factor when the frequenc-a7n1c he)u6 knzm qet, be8m;y 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 AC voltage across a capacit g2ey*i b5rd7zor approaches zero, the capacitive reactance of that capacig*rdeyz 7b2i5 tor

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 inductor h3j ps/zf7j4d and capacitor in a RLC series circuithjjfpd7/z4 3s ?

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 l6e52 yk17rm llb,z boRLC 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 impeda w (9dwwcfyw3wlz*mw2.0 dd0jnce of the circuit increases if R increases. When is this stat2 (3w9fd c ww 0.wjl0mdw*wydzement 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 circuiz hj4.8+bumcrt. The impedance 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 increasee43n9(j g* t ljkqcrj i06/elbs if $X_C$ increases. When is this statement 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
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the inductance and the capacitance both double in an vv8o5vy - kc1fa,jq3 b:xxyp0LRC series circuit, the resonant frequeny b, 0y:a xv5vcp 8vq-1fjk3xocy 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)l2 xs)-qp uqy. 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 oclevs/s q1i12 3wrc e3jcurs 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 0.10 m is rotating in a uniform magnetic fv7d- 9ybu:w t), zypjmzeg: t1ield of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic fiel7 t: ey:-d,jgbpw) uz9 yt1vmzd 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 magneic6yl(9nmnf*du 0cr* x u2 dh4tic field of 0.20 T.*4n *curi26mnh0xu9(df dcl y Find the magnetic flux through 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 i;t.tt wi,+6om dmm fwv8,hib5 n a uniform magnetic field of 0.20 T. Find the magnetic flux through the l;.tohtf5mm,,+wv6 id8bm wti oop 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 is reda z:zjlm yw*-zl -x-0auced 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 c9it+ nk 0 fuh:fhb( ,-d l5be nud(ogeu1:r(uhoil changes 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 t-l6kwuwqc;rua mw). r1 t)x9 iurns of wire on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the field changes uniformly from 0.50 T to 0 int ; u am6rl.c)wquwr1wki-)9x 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 an(twn0bibaizv6,6d /e y .ny 7zd 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 a(,-gg6p8 ixoyh4j ih bnd area $0.20 \; m^{2}$ 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 m v 1iy0l 4rkdd;mb0n97a751yhgegumjflies horizontally at a location where the downward componedi4ajuye1d70 yv01g9mln;km5g 7h rbnt 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:    
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
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 768u3a *k h cf5yrp7uib3oegcat a constant angular velocity of 2.0 rad/s about a vertical axis through one of h3 rk7 3p*8u aufb67c5eyciogits 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 zbfj d1i0 a(4kand 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 of area32bh21x oaorx/d6j) g)d rpfz $0.090 \; m^{2}$ 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 bp.j:l,.csd+ . kbtgmits armature. Each loop is 12 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 perpeml.bt:pcgbds,.+ jk. ndicular 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 os9b .znyqbae)q,u. 6r6 xjd7 bwr6n)yf 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:    
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 generafei0 vd-g0(v a 46g o2nt-lojator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T gevgt2( -vnaoid4-f6 j00 olais 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 generator with zgx;avstc 1d+e1, 2qwa 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 motor have a resistance of 6.00 W. The motor operates ocnvhx 5( ox2 8.qgcw1qn $120 \; V$ 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 resistance of 6.00 W. The motor o8 p9z8nbpp7ggv l jmrv 3k,l: 8gqzs x3,h-3riperates on 120 V AC, andzsh3ij83px gbqr9 3 r-lg88klpp v,v,7gz: mn 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 power+j h8x;,grwpj supply. The operating c jgr h8p,x+j;wurrent is 1.0 A. What is the start-up 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
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal ee8u i m4+/8 r ahd3mljy(aq5djf/n n:resistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full sja( irn/y8h e+ajel4 qmm5 u df3:8/ndpeed. 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 internal resistaogl rmg519 57c5rwlsb nce 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A55mo1bllg rr9sc w75g 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
76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A step-down transformer is needed to 4x-fpc e-ihn 7reduce a primary voltage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

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
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 m4dxgi32 +xn4q+1. xj1atpp v,iefixin the secondary. How many turns are ingfp,xn xii2ipdm e .q+axj 3411+tx4v 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 tur7 03om ryur+pmns are necessary in a 110-V primary if the 24-V secondary has 100 turnm y+rpr3o70 mus?

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 *clodg4zs z 0t7k q+5p*r (j;2)nmin u; dsibja 500-turn primary coil and a 2000-turn secondary coil. If the current in the se n+m4)dd(ok*j5u0b;cj ss2 lzr 7zq nitgp;i*condary 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 prq4dexs;m7i6o ( 7xrvyimary of a transformer. Assuming 100% efficiency, rm7 xe4(o y;diqxsv76 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 7500 V at 109 z4 34kwjmsov.0 mA. The primary coil operates on 120 V. Wh44wzj9v ks3mo at does the primary draw?

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
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 prim1,qjjs( uh k,wary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what volu(j1,kqh ,jws tage 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 and 300 turns on j/zwq9n.ma dkd vm( umt/1z+6its secondary coil. If 120 V at 2.0 A is applied to the primary, what current is pres1j qnm(m .zdw9/ tz+6au/dk mvent in the secondary?

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
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 wob+m9;o9-d8 pzfqje and its secondary has 200 turns. If the input current at thefw; jdq b99z oo8+pm-e 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 transfom .5kwuabu+s;tloamx9 4 by,*rmer has 100 turns and its secondary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltage of the secondary toau9w,bul moks +ab;m 5*t4xy . 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 turns and its secondary has 200 turns. 3u 9h jwjsmedt7d( ki0 7;4qumorp:q3If the power input to the primary is 100 W, we can expect the power output of the secondarhj;pko39 e7 rw3dt7:s (q0mum j4 udqiy 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 vol r;um3 8 zv5t lalruag/4*i,rrtage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resist r5girrl 4*z atlrm;a v3u8,u/ance 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 voltan f8mov k6iv70ge is usually stepped up to 4500 V by a transformer and transmitted through a poweom6 8v i0vkfn7r 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. T1noyvw+z 5l2.zem*c the voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. n.c1z*zmt5l o+ywe2 v 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 5q h 1ik3tc9j;ph n-/fji(- 9zb6an uff0 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 t;i-1 n9zk jj-af/cnq9fh(3b 6p huifthe transmission line, 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:    
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
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 resixo * j*:m)sf xoee)iv7stance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission le*7) jomv :fesxx)i*oine, 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 x vldu-g0s;dn(4gm;hline at 1000 V. How much less power would be lost if the power were transmitted at 300u(gsd04n m lg ;;vd-xh0 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 20 A. It is td z:k:hf;8jgu;pip69y m pz ,po be transmitted on a line with resistance of 0.60 W. To whumf;gpp6: h,9; zpkiy p:d zj8at 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 current of 5.0 A. How much t9wsm zt fp.as073l cu4(z8g; eu;htgenergy is stored in the coil's magnetic field?8eu gsh9 t;sgmp c.tzlt;03wf zu7a(4

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 pb:lffdo d 105resistor and an 18-H inductor. What is this circuit's time cond:f1b0l f 5podstant?

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 voltage in )yxi )capf2i 0n vs:,han 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 placxh1nh-ltn.r q7 al-: w.r6z uued into a 120-V AC outlet. 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 outlet.7 g4ecssp16hs l.vk :n What is the resistance of the las7vcng: 4. eslp6hsk 1mp?

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
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 supply. 7 es xh.-fq(triz+ jo6o tu)9x What is the peak current ttoszqe6 9 (.j-xr7o)ix u+ht fhrough 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
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 power3zfllok3k/h 90zp f-b:l; 2 s3emw emn supply. What is the power dissipated-0m 332wefb9 lp kz3smlofkz;h le:n/ 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 resi4 tml0e 1yn+qvstor 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 50-0;9q;5oqec c b9pb ff5yhpc-yW 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 resistor x-/ ue2e9x qvz-6leszn +45 cqqgpgc*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-mHsz 6e)d n+6ymhi-q)dieo:qfxq,st42 inductor 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 cow8qd7kn -lzw,+ n9z lbil 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 14.0a*((h) wxw umy7bqgd)-mH 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 necessary for 157 W of inductive reakp( 1ua cf+q)actance 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 atp3u-9 fl,dd vv a frequency of 20 kHz is appf3-d9,lpuv d vlied 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 250 i r1cgdlpf4 lv03/zsi*a0ukybu :p.50-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 offa06g -sd+ 5kb5cadgi a 4.7-mF capacitor at 10 kHz?

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
111#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor is ngca) tgkf, 5q:eeded 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 a reactanc unss6mt4;qv;uww g7*a; k;sve 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-mF capacitor be 100 W3oma1 1.ij 4xd bgfsa 2y;1kke?xeb.2id mky;fak134g a1 1jso

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 capacitor at 1000 Hz and 5.4.q- e syb2vpc0 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 re/wdxq:)g7 e7w j5csu zsistance, 15.0 W inductive reactance, and 10.0 W capacitive75)gwx c: duz7jsq/ we 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 if a 100-W resistor, 20-mHk :u;dhl7in jkq. lv.t0 7syg4d mja,2 coil, and 1.0-mF capacitdds.4igl 7.;tkm0jal 2nvhy k7j q ,u:or 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 resistm95gjef1bnm 8or, 20-mH coil, and 1.0-mF capacitorn59 fme1 8mbjg 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 connected in series with/g 3;amzf un,w a 20-mH inductor, what is the impedance at 1000 Hzg;/ fzwnau 3m,?

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 seriesf*:d1 h sep)rp*bc8soqs27rl with a 20-mH inductor, what is the phase angle at fdb rseh lsp78*:sc2q r1*p)o 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 needed in a series circqkc,u7yw5c,7iwek1 t4v/ g t3pt nvf 4uit with a 20-mH coil and 1.0-mF capacitorg c5 7n t4 t/yfewkpu7,3q4,ivt1wck v for a total impedance 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 o3:zudhz84u9 rida 1 )a8e wskneeded in series with a 100-W resistor and 15-mH coil to oezz4k hr : i1u8as3dd awu89)get a total impedance of 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 p /ev. 4i)npmv 9ahhyz6ut in series with a 450-mH inductor at 5000 Hz for a total impedance of 40000 Wp .vv6/ eyhmh)n49ai z?

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
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be pu+sv mv0:muq// v7r qlmt in series with a 100-kW resistor at 1.0-MHz for a total impedance of lq+/ vvr/mmq7uv0ms :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 tdfw:xox+n uf+o(r- )phe impedance at 10n:+ of wdpxf (-or)xu+00 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 series with a 10-mF capacitor at 1.0 kHz for+mr;u 5cqds 8hqhftf ;icl;;+ a total impedance ocmsc;f5;i++t ; q8lhqhur d;ff 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 q;h/pph 84jgf series with a 10-mF capacitor at 1.0 kHz for a phase angle f;4hgp /hqj8pof $40^{\circ}$?

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 resistor at 1.0 kHra-f*f1efej z2vti3 25 *ax hyz for a total impedance of 45f ay1a2-jetx3r 2vh**f5e zif 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-xle,m5t)lm) u mF capacitor at 120 Hz. What is the pham) u m)xeltl,5se angle?

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
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 i 7i.1 hcbl*ekhx + fe*kf4f*wuf a 100-W resistor, 20-mH coil, and 1.0-mF caf ief4 h1hb.*k+u w fx*k*le7cpacitor are connected 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, a 10.0-mF capacitor, any*y*ueb4ai dz:+y5 i nd a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hzae+* d*4y :ibuny yi5z power supply. What is the rms current 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 3i 6,hlgv*wmc W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What currentglih6c* vw3 m, 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 for a series RLC circuit contwjoa1d.csa v1-dz0s2 aining a 50-W resistor, a 10-mF capacitor, and 1w.ocj0ad 1-dv sa2zsa 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 series with a 500-W resistor foydhbgh6ks3mq o0 5 2:/q: ngni9yudg-r a phase angle of 9 d hsm /o036yk-guqgg: 5bqndni:2yh$40^{\circ}$ 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 6* okcfvta4-f, C = 10.0 mF. At what frequency should the circuit be driven in order to have maximt-6c4ofv*k f aum 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 ci3 *4dacjfnx.x rcuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactan*.4dcfx axn3jce, 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 ci/*wlbr8 aoz(o q e68cprcuit 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 nec +od ,q/rh*+7moi jimpedance of 60 W and a resistance of 30 W. What is theoc++*7oe mhq, /i jrnd 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 a 50-W resist /.wo-qvg6mkxor, a 10-mF capacitwgomk 6vq .-x/or, 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 of a 1.0-mF capacitor and -jfh -stu ii2,a 15-mH coil in series?ifti-hj,s - 2u

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 /o wu+6rgh -3ohvbqg1 series with a 4.7-mF capacitor for a resonant frequency ouw hr6ogb+3o v gqh/-1f 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 wiery0,8wws2)xxrjho ;w 7.lhhth a 3.7-mH inductor for a resonant frequency oo;wxhh wel8rj7xs).y r h,w 02f 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 xj*7 . m1v(ppm4lhczg a 30-W resistor and a 40-mH coil if the resonant frequency of the cirmjp* 741(pvh.g zcl xmcuit 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, 2025-11-24 00:00 , Processed in 0.710958 second(s), 310 queries , Redis On.