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 exce5pbah(4b0 ybrpt

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 tf6c; 5 9g9pgx wjgadizl(x*8laod)s6 hat 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 +zxf7fsp8.-ll *.c lretcm(l u+nu8uloops of wire in a coil produces what kind of change on theucm* nuxl+f.cl rte8 +u zf 8p.(s7ll- 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 magnetict(1c(tidtha +thpp)h j*.0 b f field through a loop of wire produces what kind of tfj(htd)01t (hpicht a pb.+*change 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 p +r o zjsi6);ljc0ff :wuy/:rcroduces what kind of change on the inducedwcjczij;lr os f 0:/r6+):fyu $emf$, 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
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 field phgnzj e s4+.u rt0o92n ur2b: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 direxm4a1w6 jut68owpy1wrvzy 2 ,ction of an induced current in a conductor will br2ya1z t 68yvmpjuwo 1wx,w 64e that 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 table. A bar magnet is heqr57pj *cyj 2dld above its center with its north pole pointing down. The statio5 jcdjry2qp7 *nary 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
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 taba(er ko(yb;(c6 k (xolle. A bar magnet is held above its center with its north pole pointing down, and released. As it approaches the coil, the falling magnet induces (when viewed f k(ykx(ceo(ra6(b l; orom 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 w /cbdi: ap +.ygvu v,xt7dm (xt35svh+here the magnetic field vector points straight up. The ma+igb.vdcvv( husx,ym a7tp3+:xd/ 5 t gnetic field vanishes suddenly. When viewed from above, what is the sense of the induced current in this coil as the field fades?

参考答案:    
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on uo t+a2kc8o 9ta level table top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induced current in this coil as the fc +8ko2tao9tu ield increases?

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
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 wh qs59 iq;wtdd9aq +k8z xc*ft-ere the magnetic field points straight down. The magnetic field disappears suddenly. When viewed from abo9 asf tztqcx-+5*;8q9d dwikqve, 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-increasid.+.3ixn rgp cng current northward. Two coils of 3.x ngricp.+dwire lie flat on the table, one on either side of the wire. When viewed from above, the induced current 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 pole edroqp2.y:s c7g ;u: sentering first. Ar:g cy . u7eqp;so2:dss the north pole 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 angular speed about an ax)yh m(a0zw o-fis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the ori yaw)o z0-hfm(entation 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 atq 0y j2rnq5v mao;rpvz- 2f6*p8fd(fa constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orienpfo2v(zaq0ydr; p 6-58 jma*2rnfvfqtation 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. 05 j 8no2vqauyv*-p+ubge ;nx
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 an (d wy4jcp- /an7dr+u w$emf$ 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 fiywv p(xu( ir6q3o1 x-keld. The $emf$ produced in the wire depends on

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the east-westbwq3++smztz wt) + r*m direction) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerningzq *wb+w+ m) st+tzr3m the potential induced across the rod.

参考答案:    
标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bare,) tew2:by(m,lqlp/sdub * 6 pp1 yfh 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:    
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generator transe 8n,/jdp /ci re.o oej4h)l5eforms

参考答案:    
标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator coil rotates through 60 revolutions eachb ki (1pkrgcjie /4z3uz y(azs82(n6e second. The frequency of thenb (y/g3jz4s 1c i8ki(uzz pk6e(a2re $emf$ 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 v5cj vr37cyv0to

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 n;wulr(+ 8o83vb6k-+h os /m vdhwezethat

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
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the secondary cy(1i 26uig0 -ipny; cvhx 8 ow/jbgk,voil contains more loops than the primary coil then it 1gb0hk j/- vy6iivxw2cy;gp ,ou(ni8is a

参考答案:    
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coil contains more loops than thekxo3pz43 :,u-h r1udnuz.s fa secondary coil thenoas1.u3h ux,3nz4 zfud-prk : 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 x0(dmmcyfo, :k2jo6lpower 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 cirs na7 eg1/7)xsgk0e j/m:eac*lnihi6 cuit,

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 seriefze6qn(gspd g:p s3;f*9z hl ,s to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor isfs dnhqf gl;9*:g,( ez zpp6s3

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 u h1vocl35c7sconnected in series to an ideal battery of constant terminal c5vc sol u3h71voltage. At the moment contact is made with the battery, the voltage across the inductor is

参考答案:    
标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resiih)n moti 5d18stance 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:    
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
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L any ne0 w49e5ebsd 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:    
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
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are x4x( :vc h+k, u jt*p)ks*bkhtconnected in series to a battery. The time constant for the circuit rep ( bhtx:j,s4pt x*h* kkkuc)+vresents the time required for the current to reach

参考答案:    
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor i((hn1 abbnj-azn t37are connected in series to a battery. The battery is suddenly removed from the circuit. The time const1n3( anat7 ji-(b hbznant 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 have theam 0hgw/9pwh uh0n/)q 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 t 6zjrx+ve sg.4e.vbd ;his circuit, the 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
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is conrx9 tv4fcf + d/, wm2oekom3i8nected to an AC power supply. In this circuit, the currenotf+ i mr,k8d 9xf34e wov2cm/t

参考答案:    
标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The inductive reactance 8q fngxgr-a;tq *ihcr b8;cuf,.kt*3 in an ac circuit changes by what factor when the frequency gic-urc*gtqk8x ,;8;f3fq n ht.a* bris tripled?

参考答案:    
标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the frequency of the AC voltage across an inductor is doubled, the*lx4 l 4o9 i c wy.ecgztf:i(r8rpl4q8 inductive rea:48r.tf 4 xz pq9wi cllrlic*8(4e ygoctance 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 the AC voltage across an inductor approac 3p,o /t:b:uftwus3nuhes zero, the inductive reactance of that 3up /f:tnu:,uto3bs wcoil

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 cok2e2 v5+ jtoi5bj zbel3ry)4tqn+ f*knnected to an AC power supply. In this circuit, the curren)b kl 2*fjkzitv5e 5o 2jt4rebyn+3 q+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 in an ac cilj1 +p/mokq n 39s8nkarcuit changes by what factor when the frequency ij3s /nmlaqnokpk 1+89s 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 vouvhh1/a l2zp 1x*o6 v*,uprrjltage across a capacitor approaches zero, the capacitive reactance of that capaco1 *r* 6,/rpa 2h1upx vhjvluzitor

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 betweend v yr5np:/tv7 the voltages of the inductor and capacitor in a RLC seri:5vnprdt/7y ves circuit?

参考答案:    
标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The power factor of t*ba7r0fl 2re5g -zq ean 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 i6g9 4gls3 nmfy1o+atrrzu z8,mpedance of the circuit increases if R increases. u9+at,g z s64y8grlofrm3z1n When is this statement true?

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
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 hs u.+e3 f*uvwtk:by9$X_L$ increases. When is this statement true?

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
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC series circuit.v4,6 p vktu. dxg/b3xmia+ ax9 The impedance of the circuit increases if $X_C$ increases. When is this statement true?

参考答案:    
标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If the inductance and the capacitance both doubly)7yay)cufc 1oo w 00 1t:egnwe in an LRC series circuit, the resonant frequenc) )1fy 70yeoacy t:n wowcu0g1y of that circuit will

参考答案:    
标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit that is driven by an AC applied voltage. At resonanjh/./uyb 5r+sgtv2ioce,

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 whe+lm/wkwx,) win

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 0.1h4,qf7c)mc5ridlngp :2 oo0t 0 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnet027od5 t:nhpmo cfqlrc 4ig),ic 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 icr(qw rk p (j/t8k84lin a uniform magnetic field of 0.20 T. Find the magnetic flux throupq(8wklri8 4(c jkr/tgh 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 9;)vxzwqe5xyx:z ev/is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux tvzqz9e yvex/)5x w ;x:hrough 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 are bsp h;r;*jab+a of an adjustable single loop is reduced from $1.0 \; m^{2}$ to $0.50 \; m^{2}$ in 0.10
s. What is the average $emf$ that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?

参考答案:    
标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil evt-pf) (p6q,npd k-achanges from $4.0 \times 10^{-5} \; Wb$ to $5.0 \times 10^{-5} \; Wb$ in 0.10 s. What $emf$ is induced in this coil?

参考答案:    
标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil is wrapped with 200 turns of wire on z+roc:d -zeud5hc/s411gt1 n:j.j;z avsw zaa square frame with sides 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the field changes uniformjz41 v5;zaw rss+t-hge1d:z /.dj azncuc :1oly 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 w60eof5vy) u(.a(2f oxczz dy hith 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 andsq4ak 9(za k)4l yh .dou-y+ci 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 6jaf+a r1rl0:awjv 6v ; d3+vmf0 m flies horizontally at a location where the downward component of thjvlj;f+wmd a a1a0:rfv3 6v+r e Earth's magnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar tfm.:6s njvw -rhat is 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a ve6.j:s-v rnwfmrtical axis through 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:    
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
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 crodrr -v ck zr+rnz/ pi85pj7*f gu7j2n1ss-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 turnbgxu ocnk204q5.5xna( wr* q zs 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. Each loop is 12 cms/bx.j 82ivr h 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,xr2/ jhbvs .8i 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 consis:v hj/,i 5nbrcts 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 with an output off*cr .7t*mrf c+xkz y8g5g:s j- ynjbu4jbr ): 12 V maximum when rotated mfkcr5b)ryybg4tg*j : u- n.srfjjz*7: c+8 xat 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 generator w6s)zxm0o 9w oaith 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 motor have a resistance of 6.00 W. The motor opep(pz2ea: t u+bmk7k3n -tpksdi,*rs1rates 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 68znf(34 ,fy otxifq khave a resistance of 6.00 W. The motor operates on 120 V A4n, x 8fyz6 qk(ffot3iC, and when running at full speed it generates a back $emf$ of 105 V. What current does the motor draw when operating at full speed?

参考答案:    
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-Vj:4xnry.akw km p +)8e power supply. The operating current is 1.0 A. What is the startkk4m8 xw.en)+yp jar: -up current?

参考答案:    
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is connected to a 24-V powe: vb k-shon7o3r supply. The operating current is 1.0 A 37n-vskoo :bh 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 con6av zz,yf7z)eww8y)ut ,q3cv nected to a 24-V power supply. The operating current is 1.0 A at full speed. What is th)y)a,t68 uqe v y zfv7cw3zw,ze 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 uf dfri:c1,ec:-zio: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 wqpb4f hu*4 psg(s0k e.bg/.wtransformer causes 14 A to flow in the secondary. How many turns are in 4u(q fwg/b0.s kghpsw e.*pb 4the secondary?

参考答案:    
标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, how many turns are necessary in a 110-V primary if the 24--cqar* bli6 p-V secondary has 100 tuprl-*6bcq-ai rns?

参考答案:    
标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists of a 500-turn primary coil and a 2000-tu*s2*uhv x;zg,estmf) rn secondary coil. If the current in the secondary is 3.0 A, wha) shu,*fzmves t*x ;2gt 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 aanh 9)wf3 :utr transformer. Assuming 100% efficiency, how many amps at 24 V can93)utw:fh an r flow 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
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon z9n+r thb2a aknz1( .*:jwqyssign transformer provides 7500 V at 10.0 mA. The primary coil operates on 120 azzb r2:a9(*nnq1k+.shty w j 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 turns on its primary coil and 300 turns on its sjtwp95py: b(demr,+ a econdary coil mjy a t5+(p:dpbe,9rw. If 120 V at 2.0 A is applied to the primary, what voltage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil and 300 turns on ion. yua px71a7l f7a8bts secondary coil. If 120 V.y lob7n7x1p f 8aaau7 at 2.0 A is applied to the primary, what current 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
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transfol;cg4a5rwnln 4 q),ppqa (*bg;i( jlprmer has 100 turns and its secondary has 200 turns. If the input current at the p ;banqpg,ci;45p((glw l n*qpl 4) arjrimary 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 hd*vn ah-i1 my;as 100 turns and its secondary has 200 turns. If the input voltage to the padh;*1- v mynirimary is 100 V, we can expect the output voltage of the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 tu p94d83rxii tnrns. If the power input t4p3 r xni8i9dto the primary is 100 W, we can expect the power output of the secondary to be (neglecting frictional losses)

参考答案:    
标记此题
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A oki m3i(n, bg;pc xj).rf current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted througbxn)pm,3icrk (i ; j.gh 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 6py m5eek/0lu /0 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the trany l0p/ee k5m/usmission 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 V4kwisq;,3wwf x +,ww g. The voltage is usually stepped up to 4500 V by a transformer and transmitte, +ikfgww34wq xsw; ,wd through a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line if the voltage is not stepped up.

参考答案:    
标记此题
90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long h l k4lqrzwybtot+ y;s3v)-c,/as a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy would be lost if the tw,tt3sr o bl)yvz ;lc y/+4q-kransformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long has a total resistance of 0.60 Ww 8azga8amm);*; gd0yz* +zx +vdhwqg ajem19 . A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, t gd awzx*mqm8zvhwd g8+m0* gaayze19;;j)a+he 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. How much lesxu ./9+pl.a;vre x8o8sh(sgk7t1iw obge )sls power would be lost if the power were tra81korl.+posl e ui) xtvh 8/ .gag9 sw(x;7besnsmitted 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 totp3y sg(af emzrxx*)-s 1td( 1 be transmitted 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 ny)z(tm1(t1xd- efx g*sa ps3rot to exceed 0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a current of 5.0 A. How much energy is stored gs ,ww fujle19,vgh*r1ux. (z in the coil's magnetic fielvwh1g, z9jeuuls1(g*rw ,x . fd?

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 containsru8w/ 2 r)9tdagali yrc() :we a 6.0-W resistor and an 18-H inductor. What is this circuit's ar tw(gra:dyrc/)2 8iuwl) 9e time constant?

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 an AC circu6ew6 e4 hj3gixuxm5bu( nb1v5 it 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 intokhs86y,r 5j9+llwlbk sx .ho) a 120-V AC outlet. What is the peak 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
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 of theg fpf+y17 ;ynk layy7n1g kf +p;fmp?

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(y-ijbxu -,sp u 0r/qq power supply. What is the peak current through the resistor?yu(0p q rbj/iqx,su--

参考答案:    
标记此题
100#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected to a 120-V ac power supply. Wf( bgk 9aphza+ww v0*4hat is the power dissipated in th9p(hbww*fa az gvk4+ 0e 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 is 1 frwm6ubjg m6k4f0/ r$I = 0.80 \sin (240 t)$. 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 50-5eykjcu zpr 1 4(a3;lzW 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 resis4(p73o aamsfkra erwx,j /;)g tor 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 1.0-5dwqu mkr(:x si4.w, hmH 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 coil at var03e9do hu11000 Hz?

参考答案:    
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will a 14.0-mH coi,5() cfz)nc 9exxg6 k6jma,wbd ci sp8l 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 necessa nihr0(p.wgozlhpfd.(10: tj ry for 157 W of inductive reactance at 1000 Hz?

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
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 8 ;8uoomi4mi c5o/h z,i; ffkz120 V AC at a frequency of 20 kHz is applied to zzm8 5 ,c;;k4iou/him i 8ffooit?

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 to a 110-V, 60.0 Hz sou:ylz0vy ybdz5 4vmxg/:v ll:3ve a-u 9rce?

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 o*a/s( nwu/-xj (ldyi + wh tnxifo7+/yf a 4.7-mF capacitor at 10 kHz?

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
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 capacitie4vv oby*n+ 6 mmxl*z7ve 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 cgu/5orl,w5rjve1d:ug09 be,jx*( bhyi j u-napacitor have 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 be2c4 wiq;hm 4 d3,buwie 100 W?h2i3cw ;qmwe idu4b 4,

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 atn8e xxd0- 9je0m oz9ox 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 resistargn;3eb- jj8zc wp.t r5cf,0 zfe+2ee nce, 15.0 W inductive reactance, and 10.0 W capacitiv c,gt0j rfwere8fcp.; nee 5+-b32zjze 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-agq9wmhlj v;z w ,proz8s8 +87mH coil, and 1.0-mF capacitor are connected in7rwz8z8v,8agjlm phw soq;+ 9 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 if3n 0 ouc4xrf (-g(5peyw qvdglno9(9q a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are conne(w-qx495 l(0ro yq vnfengc(ugp3o9 dcted 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 o:o2 v; t2tgkmseries with a 20-mH inductor, what is the i tg2o2m;tov :kmpedance at 1000 Hz?

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
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 n; vu-5 tpnmi.series with a 20-mH inductor, what is the pha tpmu;5.-vnnise angle at 1000 Hz?

参考答案:    
标记此题
120#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in a series circuit with a 20-mH coil and 1.bv- )5: 0 mwvu3laavpqgu8ug,0-mF capacitor for a total impedance ofq)v:u 0uaug, vawm p3b5glv8- 100 W at 1500 Hz?

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
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) 3,4syi 10scby xstqc series with a 100-W resistor and 15-mH coil to get a total impedance of 110 W at 2cts0y 4s1y 3)s,icqbx000 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 5000 Hz for a qw1,)q u1ktbi total impeditw1 )k b,qq1uance 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 um*z4*c/ogh r tg--ow for a total impedance-h-cgu*ro g /t4 *wmoz 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 capacitof hni/t,4rh5ib/1r jt4;fr yd r. What is the impedanr5h ,4yit/f rrnif/h4; djb1 tce at 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 need: ,*tr/ g2g-rdtdf rided in series with a 10-mF capacitor at 1.0 kHz for a total impedance of 45gd:d -r t/tdrr*fi,g2 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 witoy )- 8ap du+1p(cxmveh a 10-mF capacitor at 1.0 kHz for a phase angle of-1)+yed opx 8 (pmcuva $40^{\circ}$?

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 needf(kd /mqo; )n(qkm t(mboc*k1ed in series with a 30-W resistor at 1.0 kHz for a total impm1 )oq/ fm(b d(tkm (co*qkk;nedance of 45 W?

参考答案:    
标记此题
128#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is in series with a 100-mF lhlc 4jj*84gu vz dc c,1:wd*hcapacitor at 120 Hz. What is the phase uglhdw4j:,hc8 c 1 zjd*cvl4 *angle?

参考答案:    
标记此题
129#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What current flows at 5.0 V and 1500 Hz if a 100-6r jtsl9bw 6(iW resistor, 20-mH coil, and 1.0-mF capacitor are connected in seri(bwr6 jli 96tses?

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 kry i15b( j2phl9 judhk.z(a010.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 1r .k5 ijbu dp1z(ahkh9l0j(2y20-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 of capacitive reactance 30 W, ;h0e t tra)4gmand an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What current flows in this circuittm;40re at)gh?

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 se bw);oo .g0rek)sxnbdv sw/, *ries RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when *. ,dv/xregbs 0ko )ob;n)swwconnected to a 60-Hz power supply?

参考答案:    
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor for a ph37 .didn ecq.g .b-pvzase angle ofg-.c .iz7qend bvd3p. $40^{\circ}$ at 10 kHz?

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
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 =ta59a m r-afjq.9ux; p7ys4fnp* 8pyr 10.0 mF. At what frequency should the circuit be driven in order to have maximum powy.np-fa ;4sfy9j x9 5tmar7u prpq*8 aer transferred from the driving source?

参考答案:    
标记此题
135#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the power output in an ac series circuit with 1+/6ghn8mqa2 6 ofydfw 2.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is conneg8/oq d6fnh2 +ymwfa 6cted to a 120-V power supply?

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
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of an AC circui:q42dkmmyyc3dra z : -t is $63^{\circ}$. What is the power factor?

参考答案:    
标记此题
137#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ac series circuit has an impedance of 60 W and a resistance of*:3zl9p:c* .gbn cdg6j3+hkvtc qpar 30 W. What is the p3gj 9*zcb:+t3 qvk arl.d pcg*:hcn 6power 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 contag iy32hq;. 59bymz3kwoku1 cy.g dbg- ining a 50-W resistor, a 10-mF capacitor, 32;c3goyw q15 i.zb-.dhygyku kmb g9 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 z1xaz, u f+vu*and a 15-mH coil in series?,f a *xuzvu1+z

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 capaglxz fyt33(6zb. qg0naxv3 -pcitor for a resonant frequency of 100xxyz z.tgl-a3p gn v(fb q363 kHz?

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
141#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in urfd4 8xg0ku 8series with a 3.7-mH inductor for a resonant frequency of 1004rdguu 0fx8k8 0 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 0.bi3 -gdwvskr-pnn4 placed in series with a 30-W resistor and a 40-mH coil if the resonant frequency of the circu-4kg-wndv3pn0rib. s it 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 11:15 , Processed in 0.708967 second(s), 306 queries , Redis On.