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 fl vi.gu 6 x)d7evf-cewl1c1,j dux 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 thatac3j r51ku5 2hy u;vkx 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 ox,z)( na gcqwju/dy6/f wire in a coil produces what kind of change on th/ug dyz6cxn,j)( /q awe 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 mag4/ n*zq)1mf9yogj5mqp 8 fm hmnetic field through a loop of wire produces what kind of fp8/q hnm1* 9 q)g zmmy5jmof4change on the induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the diameter of a loop of wire produces whsok1q/ 1g4 ,,xk7zsf bvgh)br at kind of change on the induced z kfo) r gx1,bsv/h1,b4sq7k g$emf$, 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 cr5 - espr:9dnl5 gx:dfrom a magnetic field an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
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
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 induce(uukod l(e1zw y+lf25lk -ad3d current in a conductor will be that 2ekwf(+oldl d(ya53-luu 1zkwhich 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 flwf,5mp xo8at; at on a horizontal table. A bar magnet is held above its center with its north pole pointing down. The stationary mag o x5mwpf;,8atnet 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 table. A bar 0 ++hlaisd : jy8+fseha dp oso,v(:c,magnet is held above its center with its north pole pointing down, and released. ad(jl soha ive, 8+h o:y:s0sc+d+f, pAs 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 the magnetic field ve2 )arugp 45ndn. lfn1ector points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of the induced dp4 nrelnuna2f15g.) current in this coil as the field fades?

参考答案:    
标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a level tab7 lwoq i3j, lqm:.w +1bgkk+mble top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what ilwb1 k ++j 7q ,gimlm.q:wokb3s the direction of the induced current in this coil as the field 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 where the jv8w( jzo *0o3 +elxaamagnetic field points straight down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the fiel*(jxaov a 38w+0loz ejd disappears?

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
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on agx4;)8jx zx s jj2u(go horizontal table and carries an ever-increasing current northward. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the inducej(xo)jggx8xujsz 4 2; d 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 enterin0aem4ov d- mh2g first. As the north pole enters the wire, the induced current wi-v e02amo4 mdhll 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 wx vj 6twlmil+xnb3/6 0ire is rotated at constant angular speed about an axis whose direction can be varied. In a regit+3v6 x60b j/wlinmlx on 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 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 con ero2, yf1rtfnl02kew-vz9s 0 stant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis 0 flr9 e2yk2ft-r0oe n,szw1v 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.)z :bbu/dm(ey
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; 0r .jq*cdfluf -mbe- 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 )ciz(r.i+qhca magnetic 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 ths .*viv)a kc2fe east-west direction) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential induced across the rov avc)f.si2k* d.

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 velocity* ks o1rttfc)nl8,/v y $\omega$ about a vertical axis through one of its ends while in a constant magnetic field B that is directed down. The $emf$ induced between the two ends of the bar is

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electric generatork0w zq dyb1/o1 transforms

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 u sy; ;z89zf ewt1wph(revolutions each second. The frequency of the 9 ; y1pw szh;ft(8wzeu$emf$ 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 tjbqu*, +3i 9 -u6og,j)8guwrwuaii dused to

参考答案:    
标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device zye5g60c7lsx i6uu9fz,+5jn sr cag9 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 than th.l9voz0vr dt tye4h00m j sy2)e primary coil then ej2vzo)ystl 0md4 v00y. rt9hit is a

参考答案:    
标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coil contains more loops than the sec m z.57 :,jhb1ekhtkmcr+ g.voondary coil 1o m hjgz5vrck:h +b7tm ,k.e.then it is a

参考答案:    
标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power 3g. yhy6q.y ip b.ewi9input

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a given LC resonant circum2225q.be aj9 mgpj c g,mzlr+it,

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 seriehs90oi d-+s nzs to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across 9-sdo+ i0hsn zthe 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 se31a:wuh-w kcm ries to an ideal battery of constant terminal voltage. At the moment contact is made with the batterwu mh1- kwc:a3y, 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 in.9up2dy xabbg pj: p66ductance L and resistance R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the 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 resistancxr- 4,y w+(j f3i+/ulwhuowgue R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the resistance is 2R. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected iq8f:q og;jtbp4g,2/ fcb gs -t-hgoi 6n series to a battery. The time constant for the circuit repres62gcgfg8:sq o b4t,hpqit;-bj/ogf- ents the time required for the current to reach

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
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor arec4xwyq )c +mz3o a89wx connected in series to a battery. The battery is suddenly removed from the circuit. The time constant for of the circuit represents the time required for the current tm)8o4zxccy q9x ww 3a+o decrease to

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
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have tr0nx1 ;qqci* she 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 this circuit, the current2*oo2r 1o pbxe

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC power supply. In this circuit, the cur sv/iz.st6 7tqy/6 uiprentzvqy 7i/6t.us/tp6 si

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 ac circuit changes by what fa blc gv.o,bgrb 8gx-tu7ap08+*x 2xgnctor when the frequency is,. v-ng+tboxaxr70 l xg8cbg* b2ugp8 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 lbj3c( s (byb8across an inductor is doubled, the inductive reactance of that indu(bsbcl(j8yb 3ctor

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 5 i.e)xw406l ef)xnckq x ca(a+v q)ybapproaches zero, the inductive reibcc56qqv4w)) af0akxnxeyxl +.)( eactance of that coil

参考答案:    
标记此题
43#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure capacitor is connected to an ;ppdu4sv.2e vw*:f q z 1uc4ajAC power supply. In this circuit, the curre:pae4vvjcs2 quw.z *d4u;f1 pnt

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 b 6h4i fy zd/lvvtg*5j+y what factor when the frequezvld 6f*i+v/j4t5gy h ncy is tripled?

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
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the A6b tm w.3.y9nja4 cqkuC voltage across a capacitor approaches zero, the capacitive reactance of 34ty9a u 6cw .qkjb.mnthat 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 t )* zygcux8-wuhe inductor and capacitor in a RLC series cg*)u- wc uxyz8ircuit?

参考答案:    
标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The power factor of an RLC )6xb6zx keo5 : wyt+jtcircuit is defined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
本习题练习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
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedfm0 e(kv:x5cm ance of the circuit increases if R increases. When xk(5f m0v:mce 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 impedancebw9df+)a d xgfng5 :6e:w upe. 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 circ9; q5d:fkba;lj1s hauuit. 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 double in an LRC sef kyo -d47;+-c(d.swpfprlvo ries circuit, the r4dp7l( ck fv-ro -pw d;s.f+oyesonant 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 by5 10 r q9jnete/lee+p2sik pn9 an AC applied voltage. 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 Rtsb f1.7huv8kxw;g(eb3 tz4aLC 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:    
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 radiusk v1hw1vneo n+( pr-7n 0.10 m is rotating in a uniform magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the l+novpe nr71wn(-kh 1 voop and the magnetic field vector are parallel.

参考答案:    
标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of r;l :l3f ah1cf5azhb g.adius 0.10 m is rotating in a uniform magnetic field of 0.20 T. Ficl:ag1.hzf a5lh3f b;nd the magnetic flux through the loop when the plane of the loop and the magnetic field vector are perpendicular.

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
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uniform magnetic field of 0./cv 7ej-+gvq5x wem-y20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vej-+ 7x5eveymgq w -vc/ctor 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 singlgmkryq3f n j725/zp p2e 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 chyxc jl,p3ij4b. r5s h11c)ofe anges 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:    
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
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 u6l)pxvm;fc1/-(atzh c ( ls/g*mwg son 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 in 8.0 s, find the average value o /u(xa6p/fztgw l;ms cslm-v1(gch* ) f the 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
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A square coil of wire with wrz( z+ydq1gwp bx*6w/;u (yu15 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 area(a4kad5h ,p ee $0.20 \; m^{2}$ 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 wi/+tgtqc zzr4;gp / j+ong span of 60 m flies horizontally at a location where the downward component of the Earth's magnetic fiel ;gz+z+/j /cqrotg4tpd is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m long rotates at a constant angular velocity f ,hnavwwjk24 4g8k;z of 2.0 rad/s about a vertical axis through one28k,jhazwnwgf44 ;vk of its ends while in a constant magnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator has 50 loops and a cross-sectional area0ls 81jgv40; a 4cwcifs t)nvn 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 ofw ) 8x:n6.zo is*6b,xuotkahe. p tbw) 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 rect(l ma5 am;f,2buid pf9angular loops on its 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 perpendicular to the axis of rotation, what will be the maximum ouduam amf,;f p i2l9b(5tput voltage of this generator?

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
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 turt w,3ro(nnt(p p qm7zxp 2,+rens of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to c:--4vuu ixs3vc5fhve1cl dp + onstruct a simple AC generator with an output of 12 V maximum whenf x chi4u1-dvpv5-cvu:l+s 3 e 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:    
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
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  You are designing a generator with a maximud nwa zw;-x93 kqbwy,1m $emf$ 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 re7r1mv5 t607j ,k oscea mwzcc,i (rrs6sistance 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 resistanceieg *3mi5iuv ys0e0/k of 6.00 W. The motor operates on 120 V AC, and when runningii0g0 k3 /*isvme ye5u 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 hl/g*zkbcm. -dvz2 e,resistance 6.0 W is connected to a 24-V power supply. The operating current is 1z/ e zh*lk g2.d-v,mbc.0 A. What is the start-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 reh 0lipk+,oc 1esistance 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full sil+o0e,hck p1peed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 c,+4 iiao(-c hch zvvf)g:44z +hbgeh+v r5hop onnected to a 24-V power supply. The operating current is 1.0 A +) h 4,r:vv+piv+ oh hcbi445zhg ahcoef-gz(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 primar 6 r88q 1o6rsqzpu y.t3zu aiit,tp-vi:c,-kuy voltage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

参考答案:    
标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2.0 A in the 100-turn primary of a transformer causes 14 A to flow in the b/sqoda,wap,rpe2 5,y92a hji j,h/w secondary. How many tua2r5s9a, yw q/iha epjpb,, /2,djwo hrns are in the secondary?

参考答案:    
标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, how many turns are necessary in a 110-V primary if the hs mytfb:)e/+;j)c mekjbt*-24-V secondary has 100 turm) ckj -m+ ;j/t*e:bsbye)hft ns?

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 coilctt- .i3d zh3v and a 2000-turn secondary coil. If the current in ttz.ih -3tcv d3he secondary is 3.0 A, what is the current in the primary?

参考答案:    
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.0 A at 110 V flows in the primary of a transformer. Assuming 100% emnbeq m 0c8*(ke.gz 6efficiency, how many amps at 24 V can flow in the second(*bqz nm e0ekcm8ge.6ary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer provides 7500 V at 10.0 m mugily89n5 *o7x. 0cp6a mhwsA. The primary coil operates on 120 V. un hcgap x6*5ml9oyim0.8s 7w 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 wpgz*yrr-oim jvc /p:;a -),gturns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what voltage is present in the second jgp;r:roi/ca - ,yz*vmw gp-)ary?

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 its s*cpu, w )ai;ahp ;di;wecondary coil. If 120 V at 2.0 A is applied to the primarychp)w;diw;i; a,apu *, what current is present in the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turnsfx,pdc9pq 1g xcm1,n8bw/p*i and its secondary has 200 turns. If the input current at the primary is 100 A, we can expect the output current ap9n8 1/, 1cxigxfm,b dpcw*q pt 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 s *h r1ax rl7w1a0w-w 28vcg fg*esnkp+econdary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltage of the se **wgav1c7s8k w01l rhpx-wrean 2g+fcondary to be

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
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 it9 a7akj;xkjdk 9c-t*g s secondary has 200 turns. If the power input to the primary is 100 W, we can e k*ktgx7;-aajc9jd 9k xpect 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 s:v -z* 0d9chm5ji:yldew*/ e+yzd2a ia kz0i 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 s/ z :j d+ w ec-02*0v*y:imk9lhaidyz e5izda1.0 W. Find the number of turns in the secondary if the primary has 200 turns.

参考答案:    
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usualljx,qqa3m(vl ijz s4zf55c9 7 cy stepped up to 4500 V by a transformer and transmitted thr5m ljc5s79(,f3ic qzazxj4q vough a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually stepped lw nrs/u+bu,3 up to 4500 V by a transf3lr u+subn w/,ormer and transmitted 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:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
90#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long has a tjq l ics45w7g0otal resistance of 0.60 W. A generator q0lg 745cisjw 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 transformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long has a total resistance of 0.60 W. A gyx9 u.5ijkhvif c. :s.enerator 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 trshjif yi.c.59 x:k. uvansformer 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 10024 (p+q6je 5po ra97jer nmgnl0 V. How much less power would be lost if the power were transmitted at 3ne6jo n74r p 5(l2me +9qagpjr000 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 d kjkop:6/hy1li: 7qnbe transmitted on a line with re: q1/pd7khi 6:n yolkjsistance of 0.60 W. To what voltage must the generator output be stepped up with a transformer if the power loss in transmission is not to exceed 0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a current of 5.0 A. How dn, l a3fl2o8l4lcct ctv+s+sq3 n +u2much energy is stored in the coil's, lq s4s+cdvctf+u82l ot anc3+ln3l2 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 resistgfv;w d/ cp5 ok tbpdwtt)e1n- 3w.u9p+x h2)vor and an 18-H inductor. What is this circuit's time consvd);+pt3.9nt f b/5wuxw21d)ekp-ogt hcw pvtant?

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 circuit where the rms voltag8)9qmzosw5z 7t xan7 se 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 12qpui f uz4 tx:(pk0+i5c8/w mc0-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. What is tulfmh7a5q65t)s p hjf ml :5z;he resistance of the lalqf5hpt5 afh;7jmlum 6s5:)zmp?

参考答案:    
标记此题
99#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected to a 120-V ac power supply. What is the 0mvb8hevig, r8wx4 l8*zf 4supeak current through the resbv8 *fszxv4 8r0gi4m,uwl he8istor?

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 a-kqsv7e;btpv42kfn /1wrm z 1c power supply. What is the power dissipated in m ez/;kv47tvqf -b2 k1ws pnr1the resistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 a,-k2evf p19k-t:qci-ue chq $I = 0.80 \sin (240 t)$. 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 ar6pf 5rxysays: li-9x vj35foi;3n 4p 50-W resistor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

参考答案:    
标记此题
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W ,yo e-:( bedgsresistor 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 ajbeym33jgs- pw in3n;7,k imi+:pi g: 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 reu p *dm(eg7s;factance 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 a 14.0-mH coil have 14.0 W of induwf)m-*zrxru6n-d6g-a5 n0fs:n ra hy ctive 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 reacaaq+f5ea : mkr5z ;c(mtance 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 indu( z go;k8ywg7ictor when 120 V AC at a frequency of 20 kHz is applied to gwok78y;zi g(it?

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
109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through ;k kuglz+ 8ia l+neq l;3p-tt5nnv7w:ip-a7s a 2.50-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 re8 5 oszquzhz kss20*/u6dm ,deactance of a 4.7-mF capacitor at 10 kHz?

参考答案:    
标记此题
111#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor is needed to have 50 W of capacitive reactance at wf;y0htnb;-ehr6c .wpi d8) omg18 gt10 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 )6 jo2kbdg8l.1ni ,x5pnrx xd10-mF capacitor have a reactance of 1200 W?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will the capacitive rhi s*1g3gp, p5s)dwikeactance of a 0.010-mF capacitor be 100 W5p gkdss)3*i 1 hg,iwp?

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 c ny g-687me- dnh-5bn6jjo1soy 8 tvxsapacitor 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 0g )njii2o.9tldqp1tm z,: to12.0 W resistance, 15.0 W inductive re 1ipitn2:o.qd,zogm0ttj )l 9actance, and 10.0 W capacitive 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 * y,emdr,3dv j e9pw/xHz if a 100-W resistor, 20-mH coil, and 1.0-mFmd rx9yw ,e */j3ep,dv capacitor 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 resistor, 20-mH c+h)-u4,i/al -oal3dgyl1 vzc s n-bz uoil, and 1.0-mF capacitor are conn-n uh dcly,z-4av+iul 31b-og)als z /ected 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 serim(jtr*, m2qf les with a 20-mH inductor, what is the impedance al, r(tfq2jm* mt 1000 Hz?

参考答案:    
标记此题
119#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connected o)6rx gkd1o 1ain series with a 20-mH inductor, what is the phase ang1g1kd) rx ao6ole 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
120#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in a series cirzsf9m2br6 p7b a-l mv;cuit with a 20-mH coil and 1.0-mF capacitor for a totaz; b armflv9 sm26bp-7l 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 needed in series with a 100-W resistor ahf t)aze8 b6l,n6oo +t 8vyvg9zvp m-+nd 15-mH coil to get v z9y6avnl+pv6 f+hg -z8emt,o to)b 8a 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 put in series wi eeub2qdg +x h;oye.:x f7j,h:th a 450-mH inductor at 5000 Hz for a total impeedob; jy xgef2x:q .h:+e,hu7 dance of 40000 W?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in serimk3-lsw ;/vnfes with a 100-kW resistor at 1.0-MHz for a totalsk fnm/;lv3 w- impedance of 150 kW?

参考答案:    
标记此题
124#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected ip 94p u4pz/llsn series with a 20-mF capacitor. What is the impedance at 1ll 4zu49p/pps 000 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 a to)h.s;pkiut +gj.om9-f m*bag tal imp m o.* -skhpigbt9 ufa;gmj+).edance of 45 W?

参考答案:    
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in sl3geqg7*7 pbo eries with a 10-mF capacitor at 1.0 kHz for a phase angqbe 7og3g*7l ple of $40^{\circ}$?

参考答案:    
标记此题
127#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with a 30-W resistor at 1.0 kHz for a total/7-se1 vy k)vwp1aenx impedane7v sk x1/nevaw-p y)1ce 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 cw)ds6fxb (56 wm.rrbseries with a 100-mF capacitor at 120 Hz. What is the phase angleb) rmb65wc(s.frw d 6x?

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 18:o ym uz,4frp500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are conu4 :ryz8 ,opfmnected 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 capaci,kadg- v d-asg1o4qqlkj)5z ) tor, and a 0.350-H inductor. The circuit is connected to a 120-Vjq 5k4agg,sz1 l-o)ka )-v qdd, 60-Hz 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 fx mc3q(e0oc:h(hft2 reactance 30 W, and an inductor of inductive reactance 30 W are connected in series: o qt e02cchx(h(f3mf to a 110-V, 60-Hz power source. What current flows in this 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
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle f6ku 7 j3ugx4hbj/bc w1-w8yli or a series RLC circuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hzg b 3h4l jyjxicu-w kuw/b7168 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 resiakx ; t.0:ny6j migvz8stor for a phase angle oftjiy680 n.kx a:;g zvm $40^{\circ}$ at 10 kHz?

参考答案:    
标记此题
134#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit has R = 20.0 W, L = 200-mH, C = 10.0 mF. At whd*8-qsqrm 8ame f 6c3nat frequency should the circuit be driven in c dm-6qf3srq*8 neam8order to have maximum 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 ujxb)h ;,z fl8series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V powejuhxb f,)z; l8r 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 sicf4( v3j7r ccircuit 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 odo-:lrx n366 ,smb sybf 60 W and a resistance of 30 W. What is :rm x s3d,yl6n6sbob-the 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 contabr2 /4 0 rsyt5jfm0sbzining a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz powfr s bmjz040bt/syr25er 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 a 15-mH coil in serie zs a9092cbdprank+f7t(/qo zs?a kzd/cqfn o9p9at+7b2z0 (rs

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
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 bv9tfu i 2elb;c :.4lafor a resonant frequencl2.vb : aiet cu;l94bfy of 10 kHz?

参考答案:    
标记此题
141#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What capacitance is needed in series with a 3.7-mH inductor fot; ou rx2mmovbj1 pn 6k(4;a0cr a resonant frequency of 1000 Hz0cm m2 4ntpov u;obr;k 61jxa(?

参考答案:    
标记此题
142#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor must be placed in series with a 30-W resistob:pz f.pv5ka mpj; n+)r and a 40-mH coil if the resonant frequency of the circuit is to be 1000 H)aznpp +bmp:.j; fvk5 z?

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, 2024-12-26 15:48 , Processed in 0.727383 second(s), 305 queries , Redis On.