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 4m:v );;p xe)pouv4crg3hoziflux except

参考答案:    
标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction states that 73m4hvkfbmm0 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 what kind of ;(wdlsvv9 5tychange on the ind s5t9wvl y(;vduced $emf$, 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 fieldms7z uevk * wdf. /:j01c +wyouql1k;q through a loop of wire produces what kind of change on the induzm /se0w1 :ldvk;fyck1u oj uq.+w*q7ced $emf$, 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 chgo 3.4puu;x7 qdvi0lr(z x(og 9aeu5jange on the induced g7u rq(.o (ix3ugj9pve;dz o4au x05l$emf$, 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 fiel7dtudb0t r;4/(xnl iz h;or t ufp*.-zd 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 in4gf:a.s+ +p copud0w oduced current in a conductor will be that which t:s+g 4wp+oc0ud pafo .ends 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 w35zjgu bo51 xon a horizontal table. A bar magnet is held above its center with its north pole pointing down. The stationary magneo5xbzg5w31j ut induces (when viewed from above)

参考答案:    
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table.6dno /)ncnk,f11 b(wtdl 3 upf A bar magnet is held above its center with its north pole pointing down, and released. As it approache 3b 16d,/cnktfu)onl1dn w(fps the coil, the falling magnet induces (when viewed from above)

参考答案:    
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a table top in a region where the magnetic field vecto 9uk5m(yhv-i xr points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as m5hv 9(xkiyu-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 tablez56 a 5qhdfnn6 top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of q5 6anh5ndf z6the 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 horizontaflg+ha oh(h 09l table top in a region where the magnetic field points straight down. The magnetic field disappears suddenly. When viewed f0 g oh+hal(9hfrom 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 ever-incjw7 vo/toq,t3 reasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the induced 3qtj tov,o7/w 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 through a loop of wire with the north pole eruh3m hw:7:nql.gstm vzrs+ueg1219a- ,miz ntering first. As the north pol3g1 7us+ s:qaum: i-r9n mwrzht mh,vgz2e.1le enters the 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 rotated at constant angvp3 mxmglm0/ei )5b -lular speed about an axis whose direction can be varied. In a region where a uniform magm-im mvle5b/)3x gpl0netic 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 constant angu- a7k.ix .pyrrlar speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must p7aiy. krr-x. 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.8+h+p87b cgtibmdum 8
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 ut +g *v9haexbw9i:c: a7kb m: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 fv79 zzqj zaw1p;3ckba5sitl20 3yl ;qield. 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 ptlz q(by5:nh*h ke-9in the east-west direction) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential induced acb:z9l 5tpn( q k-*hheyross 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 angular velocit3u. ntl 4ac,opy $\omega$ about a vertical axis through one of its ends while in a constant magnetic field B that is directed down. The $emf$ induced between the two ends of the bar is

参考答案:    
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator transforb* w. .5j7-roppo nxvgms

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 rotay(sv ip *7h8k(xcnv (wtes through 60 revolutions each second. The frequency of the cskh ( vywn(pix7(*8v$emf$ 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 toni, -bccm:cv,

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a d4j ,+ag *gx bc+3oujcgevice 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 con;7cq8 u7heu3slvj n;kbr ni n)wx(y/+tains more loops than the primary coil thcn(x7 hy3) r 7 +nkl/bsiv; ;8uquenjwen it is a

参考答案:    
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coibcdimnx/kfnb )z7 j ees-e(:56pu*q5l contains more loops than the secondary coil then itnejbx (f)7 u*6eip kz-5eqcd5 sb:n/m 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, thfs7:u i/ yz4ds 8/dkahe 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 circuc u+iytw*-s;ait,

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 serie6y ynbfcs*-3i s to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the vol6y c*b-iy fns3tage across the resistor is

参考答案:    
标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to an ideal battery ofx,;-wh,1ic)p so4o+oj r5 hjftqdv+ q constant terminal voltage. At the moment contact is41s,wod +j 5o); +oih,fc-p qrvh tjqx 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 resist,w3g6vmqeau92 vci6 j ca*)lxance 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 i3x8iwcp6-j g cs 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 inductor are connected kfi/,;82 gzzocpf p o29yk9hk in series to a battery. The time constant for thc/ zpkfzpg2f8k;ik9yho 2 , o9e circuit represents the time required for the current to reach

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
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected iq c .yva496vkt)t qbf6n series to a battery. The battery is suddenly removed from the circuit. The time constant for.)4kfc6yvbvt 6t9q qa of the circuit represents the time required for the current to decrease to

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have the same units a / ;swrti+ee /et)ot3except:

参考答案:    
本习题练习题目来源于题库网 (https://tiku.one)，学生可刷题练习，扫右侧二维码或加微信skysky1258，获取更多资料
教师可以抽题组卷或一键复制本试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected to an AC power supply. On this circuit, thc7c/iud)x fi0/g 10mlg+v tcye 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 connected86 +m7gxck bl/vaz54n/e vonu to an AC power supply. In this circuit, the currencn7ke/u84 n5xvgv +6 o/mzal bt

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 6d8 gytxxz7(l in an ac circuit changes by what factor when the frequency is tri8(xzlg7 xd 6ytpled?

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 doub/;zla4rmj wl 4j1 wy /uomngo(.5gc5o led, the inductive reactance of that ;5 5lrg1. wojgmo wm4(j lo4z/cn/ yauinductor

参考答案:    
标记此题
42#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage yejvwmdh) ,o4u2fjaup /0 5z 2across an inductor approaches zero, the inductive reactance od2ufyvp 2oa5ez m h/0u),wj j4f 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 circuit, the curmza8xa3ss(/xwo6fg h o+z x .1re af+gxh1/z w so6m 8axx3.osz(nt

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 fa6no6 gv)ue6jjd t gns92ps: 3cctor when the frequency vc)9e jponsg6tjus 6d:2gn63is 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 j1e /q3dd,sj8wf1g el across a capacitor approaches zero, the capacitive reactance of thf d 1q,1gjweeld8s3/j at 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 inductor and cxe5t2;fo/ aknx;hg;5tn t li49 ,ocsdapacitor in a RLC series c2ghik5stx ;dn/ 9at ef;, l5nxtc4oo;ircuit?

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 ank61 p,1sk + piph5uqoba lo23k RLC circuit is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of th1y 6oq7yz ub a(ved8a/e circuit increases if R increases. When is this statemende/8yub 7o( a v1azq6yt 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 wxee/g5 :9 p1hkt,xw cof 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 incna u 5 xr9f*y4ufgkf/1reases if $X_C$ increases. When is this statement true?

参考答案:    
标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the inductance and the capaci:z*mk 1pu b8hitance both double in an LRC series circuit, the resob:pzm1ku 8i*h nant frequency of that circuit will

参考答案:    
标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is driven by an AC applied volttf: on ,)03 cdeef./shn .uyk(vov5t dage. 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 Rrm7no-yzz+k 8+32x)z3v3yuewpg kd o LC circuit occurs when

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

参考答案:    
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
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;.lcg2ll: dqij hi4o6qm8b5s in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are paraq 2:mslj8 lib;lhcd4oig 6.q5llel.

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 roti v f:kl, d)f)z2ya0euating in a uniform magnetic field of 0.20 T. Find the magnetic flux tikey2 vf a,du f)zl0:)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 magnov3plyp5* wd4)hv:nrnpj .ru+z,s m/etic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are at an anglr rvl 5 4:*p,n )dsyvp.+mho/3zpwujn e 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 reduced from(t 8ged92 7 mgicxs3wu $1.0 \; m^{2}$ 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:    
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
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil changes f,v3ci1t wcq5gf:v1k)z-m p+dapzgl 0 rom $4.0 \times 10^{-5} \; Wb$ 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 xioqu68 ao+i-of wire on a square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If t-i6 qaoo+ xu8ihe 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 wir.:z g ,rkt2tt aj8p 45ol:jfjth 15 turns 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 arpk ,u *7zy;nypea $0.20 \; m^{2}$ 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 s, *ak5ix-tc 3frtcm7a pan of 60 m flies horizontally at a location where the downwar75 c-tfcrx*kmt 3iaa ,d component 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 tqadj 2.,f av)7-qsey*i b n;zhhat is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertical axis through one of its ends while in a constantnf.qyj2 e7q*)h-bv d; a,az si 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 and a cross-sect7nytj+ :yb4: +vyr zodional 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 consi f3obpl*dhgn. w s;91y0eec*csts of 100 turns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rectangular loop +8h2hv hcjgg03gz )tps on its armature. Each loop is 12 cm long and 8 cm wide. The armature r t)v 3+hzpc8ghgj20gh otates 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 consi2 s1nae v02yflsts 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:    
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 3ag5qk e:h 7s d+slnf;1uqnn)with an output of 12 V mls nsqdf1an :e ; )75uqhngk3+aximum when rotated at 60 Hz. A magnetic 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 gener;s2 53 a1wtziwvn 7mujator 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 monc:8q.o eew; ktor 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:    
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 operates on4mngkc:( ul i+ 120 V AC, and when runnig+cumln: (i 4kng 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 2glj3 8 s yxz4ihy;1r;z4-V power supply. The operating current is 1.0 A. What is the start-usygi;z;1hl r 8xj yz43p 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 resistaxy2ool+ c9g6oue(6x w:h *rui nce 6.0 W is connected to a 24-V power supply. Th 26:6*(cu loxr i9ye+ooh uwxge operating current is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
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 24-V power supply.ri.5 wr:ng(hhdk ):mpzu z c7+ The opew nui:rm 5+p:czzd7k)h. rg h(rating current is 1.0 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 transformer is needed to reduce a prfe9u*h xd:h+ uimary 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 prpysw ,nw5yfk 6h03e:ximary of a transformer causes 14 A to flow in the secondary. How many turns are in the secsw5x:yk 6,3h0 pnw yfeondary?

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)xszrrg 9 a hnd6ya5-, in a 110-V primary if the 24-V se)nyh6dsazar5r9 g,- x condary 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 a 500-turn primarimy *-l4xjq wiwbf8; 2cd:3 yxy coil and a 2000-turn secondary coil. w4l* q;fix- yy:bmdijw xc832If the current 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 pqot ffz)..o4 of a transformer. Assuming 100% efficiency, how many amps at 24 V can flow in the secf..o) ftq opz4ondary?

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 h3uh/2i,ba1* ril+xbdccfv( z8vt(v provides 7500 V at 10.0 mA. The primary coil operates on 120 V. What does the+ bh1zb,a *xi c3ticu28v (dlfvhr( v/ primary draw?

参考答案:    
标记此题
82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil and +srg4+dzsq6x)gc(nc + l gj,l68rkdu300 turns on its secondary coil.r)g6zc+, suxkdn8crglq g+l6+d j(4s If 120 V at 2.0 A is applied to the primary, what voltage is present 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
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 t2va5g0r )hib8jt)npn r7:eadurns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what curr r8petdi27b:a)ng )hr0 v 5njaent is present in the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 206dqgv, n*iw1z0 turns. If the input current at the p*z,wdng 6 qvi1rimary is 100 A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turns.:kse9-wq 6bwv/ pi0p bdv7li-c4b lx(+j3jr d If the input voltage to the primary is 100 V, we ca 4ij/e+ xk b(- lwqd-pwip rb9c7bs:v6 dvj3l0n expect the output voltage of the secondary to be

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
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 :c d5e8sdo u7+uxnn0band 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 frictionals b o+nxc7:0 u5deudn8 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 volxskz.9g2a3:ow7w w)qii4 34r ohnux i tage is usually stepped up to 4500 V by a transformer and transmrqosog h 3aw)w4w u94k72 .ini:i3xzxitted 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 6-. t d(hoa3pcp0 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transot( p 3a-hcp.dmitted 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 usue a rvgehb:-f 8:gx,fq13e zw)ally stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage : z wegg8,3qxe)-ffeb:vr1h apower 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 /l7olnkn3 7x n8jxgi+((ofowta ;gl1 long has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped 8loofx kwg o3ltn;j/n n +(g(71 x7aliup 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 totah87 )syj 2frcq ucy7a/l resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy/)78cyq f2 csy7rauh j loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is 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.au /d2v+ nu3sgta/yybg)1-n q How much less power would be lost if the power were tr y+qyt1 aug/ sab2gn)-d/n3vu ansmitted 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 20 A. It is to be transmidn 35wlvdqtr5 9vi534rgzf;atted on a line with resistance of 0.60 W. To what voltage must the generator output be stepped up with a transformer if the power loss in transmission is n i5 w55rvrzfndva4l3gq; d t39ot 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-c p4nkz*9hiqx1..yiymgw tgh0:u5 x current of 5.0 A. How much energy is stored in the coil's5uq49 cx-.zy .:gxi0gkthyphw in*m 1 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 resistor and aba wmb aq i4xc-85b xso-/vn8;n 18-H inductor. What is this circuit's tsq-5xc4wm/xv8-i bb;nboa8 a ime 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
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 circuit where thew eej(7 -s9a;eu./ao.*hcneu +qjuvleq9k- t 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 outle(y;hb.3hj+4tv iyuho efz3,3:ofssf a/-m xet. 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. What is the res6kt h s;x u;:1vz,bkrmistance of the lamp 1;;krubm z6 ksxvt:h,?

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*rst p hle k*5hc6bb(s;2sl +/vn5pyz. What is the peak current k6hp/t(c*s+ pnyls2sv5z;b rl5* ehbthrough the 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 connec5*t) il8 f6a,doia rxyted to a 120-V ac power supply. What is the power dissipated in the resist xoa*ti , )faldr68i5yor?

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)tvl0pf+ 6 nirm( c6nw-W resistor 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-W r.g tq,-,foswqfef2sow r);l ;esistor 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 tktl:v 6 daydr2l 0.x1w 7rob+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 of4 y jti* ueim.1+,qkugjxl/x 1 a 1.0-mH 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 reactancg8 snz xv8do -/cg.uh4e of a 2.50-mH coil at 1000 Hz?

参考答案:    
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will ) s -d70qnwf7*wqq nztnk/k /p:x,amia 14.0-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 s3*owq rf9 b58)79ljmci te ku ,,kdms157 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 xl0a mx-ge 2u*V AC at a frequency of 20 kHz is applied to itu0m*g ea 2xxl-?

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 thrmnz5)3h pfo a(ough a 2.50-mH coil due to a 110-V, 60.0 Hz source?

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
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 capacitor at 10 kau6rwb7 iuy57mtcf 3 2Hz?

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 needed to have 50 W ofks)l ,/kl5oy). s vds)pqu/ud 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 havc faf0zb/d q8 jz y2bwo;/yh52e 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-mF capacitor be 10pd 8kp n650ezjjs9*z k0 Wk0np kpjd 6ze8s9 5z*j?

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 throw,do+2 i ydzyet5 +c3uugh 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 with 12.0 W resistance, 15.0 W indv: i)bsmddqf23 s+ nt/uctive reactance, and 10.0 W capacitive reactancmns )+d vi:ts2f3dq/be?

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 a6dp zze j 3,9ume(6dne 100-W resistor, 20-mH coil, and 1.0-mF capac( p6z6jeddmz,nu e93 eitor 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:tg2isz+n in 5t)7pqg if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are connected+) zitgntqi2g 5s: pn7 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 connec.:g8pehu/f:02st2p ejirg k ated in series with a 20-mH inductor, what is the impedance at 1/egu:pshje.2:ipk f t2gr08a 000 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 20-mH inductor, what is tdt:ex0-m 02hwcgy34 fal1uu qhe phase angle at 10004-ytf 2 :0lqcm3 x0g 1edwuhua 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 circuit with a 20-mH coil2)xwf eku)gzm3ainm *+ qf 2.m and 1.0-mF capacitor for a total impedance of 100 W2qm3ixegf*a2 f.+n)zumm)k w at 1500 Hz?

参考答案:    
标记此题
121#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following capacitances is needed in series with a 100-W resyhhnp7 xmd:35x zl8m,istor and 15-mH coil to get a total impedancx 73mzph8:nl ,5hdym xe 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 in series with a 450-mH inductor atgo1tvsy:6mp ( 5000 Hz for a total impedany1v o (6pgmts:ce of 40000 W?

参考答案:    
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in series with a 100-kW resistor at 1.0-MHz fom6c)1d1jnh wg)i e:awr a total impedanc:an61mw) 1jwcdei h)g e 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 l.r rk2y 9yak+f5/2uv hj:wux 20-mF capacitor. What is the impedance at 10y9j.vrw2 ly f +ruh/:2k5uaxk00 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 s7 r ;zbhtq*2sleries with a 10-mF capacitor at 1.0 kHz for a total impedance ofs;q2 hzl*t7 rb 45 W?

参考答案:    
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series v(i /b+tro( kpwith a 10-mF capacitor at 1.0 kHz for a phase angle ofv tropi(/(+b k $40^{\circ}$?

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 serisb83kdzr- j)c* kz 9mges with a 30-W resistor at 1.0 kHz for a total impedance) dz m* 9bk-8kgj3rzsc 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 ser47ji lj*b/j0j3rp 2so/xauczies with a 100-mF capacitor at 120 Hz. What is the phase anglj/ jj *i x4u70coz2prsbaj/3le?

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 if a 100-W resistor, 2d ht;1sbsga2h4ca;w gimq8+a c8o;q90-mH coil, and 1.0-mF capacitor are connected ictwoa;sq94mgsag82 ;c qa ;i8b1h d+hn 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 consiwtu(p5v:x6-pg xy ;+/y fqx vcsts of a 100-W resistor, a 10.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. W yv5-x/fwcux:g6 +;tpx qy (pvhat 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 anx;ne*l c q41d7w.8p3v(t2 -eywo lz:zew vx reactance 30 W, and an inductor of inductive reactance 30 W are connected iy8 -e n4 7cxdzn;vw2 vp:oewqtze*1l w3la(.xn series to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a87x 2+tzo rqaj series RLC circuit containing a 50-W resistor, a 10-mF cap7o+ 8xz 2tjqaracitor, and a 0.45-H inductor, when connected to a 60-Hz power supply?

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
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor for a phase angle .5aa o:2qhtdzis .m1cos 2aa1di:c o5zq.m.htf $40^{\circ}$ 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
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 = 7vlc.ddl2 ps2 200-mH, C = 10.0 mF. At what frequency should the circuit be driven in order to have maximum power transferred from th2l 7vpcd2.dls e 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 with 12.0 W r agiq(75 -vb+8j luykresistance, 15.0 W inductive reactance, and 10.0 Wi-7lak8rq(bu 5jv y +g capacitive reactance, when the circuit is connected to a 120-V power supply?

参考答案:    
标记此题
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an AC circ wcr)d cg a5 7::,a2yeqejh8xwbv,zg9uit is $63^{\circ}$. What is the power factor?

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
137#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ac series circuit has an impedani; . g68nzqp5a r- thl7cx8nahce of 60 W and a resistance of 30 W. What is the power factor?p;z87l ncq5atxna r8hh6 .i g-

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 RL1 zmc r,i36rheC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz6 ,rch1emir 3z 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 capaam i5c(g y*24s7xjd tja eq(n.j /1ebpcitor and a 15-mH coil in series?cpsyji jq j7a1 em/xga5bd2*t( 4 .(en

参考答案:    
标记此题
140#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is needed in series with a 4.7-mF capacitor for a resonant frequrs y b r,x*,j. qomrw,/8h4xltency of 10 k. qmy ,jt h,wl,o4*8rrxb/xsrHz?

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 seriez1 9hn /es*ouqyk,n xnbml .yq .7z.7gs with a 3.7-mH inductor for a resonant frequenc/ub yke xz9q.y7 qzngl1ms*.n7hn ,. oy 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 witj c6g4p jx i9p.l6ta/sh a 30-W resistor and a 40-mH coil if thepg6 tj9c4 6i/jxsal.p resonant frequency of the circuit is to be 1000 Hz?

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

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

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

    GMT+8, 2025-11-15 13:43 , Processed in 0.793163 second(s), 305 queries , Redis On.