51fly国际课程 (51fly.win)

 找回密码
 立即注册

手机扫一扫，访问本页面

 

      

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51fly国际课程 (https://51fly.win)，是在线习题练习的打印版，您也可以访问本平台网站(https://51fly.win/)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://51fly.win/test80.html
 作者: physics    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 exca4yp e9d7qa h2ept

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 - l 3*m2aqkll7q3mkdl states that 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 ofm4d7el9of wpg 4 tp(0d change on the dpwfgd4 t4me lo9(07p induced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Doubling the strength of the magnetic field fje0+z v n2yd8xd 4x+rthrough a loop of wire produces what ++2 njzxxdy4 r 08vfedkind of 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 o 1k9d+mq.5zaj v+r+tdoks1cff a loop of wire produces what kind of change on the indukm qza+1d5s1f9+ro t. jcvdk+ced $emf$, assuming all other factors remain constant?

参考答案:    
标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As a coil is removed from a mqm7z-ss htgj.21k 0c fagnetic field an $emf$ is induced in the coil causing a current to flow within the coil. This current interacts with the magnetic field producing a force which

参考答案:    
标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  According to Lenz's law, the direction of an induced cuoh p74 p,:qbudrrent in a conductor will be that whi b7hup p,4:dqoch 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 held above ity w y3, 1dp0s):hjjk/lapy r-rs center with its north pole pointing down. The stationary magnet induces (when viewed from above)a-dr jyjs, )l30whyrykp:p 1/

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 horizontaajjwa.j 97j0i l table. 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 from wj 0jj aai.j97above)

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 whe,w4k6ggce6z ure the magnetic field vector points straight up. The magnetic field vanishes suddenly. When viewed from a6g, k ewu6cz4gbove, 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 a level table top in a region where the magnetic fi7 0bzo0qe izg:eld vector points straight up. The magnetic field suddenly grows stronger. 0ozi :b0q7z egWhen viewed from above, what is the direction of the induced current in this coil as the field increases?

参考答案:    
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a horizontal table top i5r(twe4nhaz b2e4m 5q n a region where the magnetic field points straight down. Tw5nq abez 5(rm2het44he magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on a horizontal table l7mm r6. ky yz/w,e/kb)a kzvhbvy/.9and carries an ever-increasing current northward. Two coils of wire lie flat on the tablyvmym// ,k67. .abhrkkybl )9z/wze v e, 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 throughir:wdb3+ m4 wz1zz4s9w1 x w3bf5v,x9wdpyb u a loop of wire with the north pole entering first. As the north pole enters the w b9w :1d3y w+9br4b,xdvz3i5ux1w smzpw zfw4ire, 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 angu9b3u e.5 cithb2i-pe ular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, ei h52pu.u bc -teb9i3what 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 angular speed about an axis whqyqbn;d(;gts.,fo . e ose direction can be varied. In a region where a uniform magnetic field point.;n(qs ;foybd.q,gtes straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

参考答案:    
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.1)/nv gkc uwar+ -unmp)d)effmj vh9x +15w(t
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 m r;km/bwt3ua ;6yt5ut:wng3 $emf$ can be induced in a loop of wire.
参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wire moves across a magnetso; 8- +wnpv esdfp;:uic field. The $emf$ produced in the wire depends on

参考答案:    
标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal rod (oriented in the east-west direction) is moved094 -uwwlawc 1r vq. :y7lbuw)lwnnl * northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the potential induced across cu-w w nwwq4wa y1*0bul)l.7l9v:l nrthe 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 rotatinj o.ci :6ox0es 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 inlavhx40jh2 kb u,;.transforms

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator coil rotates through 60 revoluti)o ym r9(n:ay- nu1xtwmq +n-n 8r-ations each second. The frequency of th n+:m torxy )ntayrm na9i-- n1uq-(w8e $emf$ 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 usi4usj( cv:-nvm ;:yp 1r6:+qjz vgglmed to

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device then opd4o)(s+ yq k9v)sat

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 covm9ff 350z w4u:kfwzr,*o ph nntains more loops than the primary coil then k3f9wufp5hr0*z :,znmov wf4 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 coil contains more loops than the secoll+abrx3a6 d( g3vko g2:qce +ndary coil the2eo+kbr 6 g+la3lg qad3(:x vcn 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 powe8ranz j8/6j kgr 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 circuiw m017 dckl.nlt,

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 series to an ideal battery of const6i4g,ubqde 9a )r: hniant terminal voltage. At the moment n,h9d aq4 e:gb)uiir6 contact is made with the battery, the voltage 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 kngtxbo kx15c( jv+- q1m+d -sy*cgy.to an ideal battery of constant terminal voltage. At the momeo5vy(b1.nm+ 1- t-y k* dxxgsjg+qccknt 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 resd;6a+n hja c,mo7q5km lc1r 6 -8xmrvnistance 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 induc,wtbcs/(q u 6r 2(efs nzus++jtance L and resistance R is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the resistance is 2R. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 connected in series to a battery. The time constqqi.ndcdvm /za ae7(;-2+ozj,f .jsdant for the circuit represents the time required for the current to re,iafq z2jzn7.qvc-d oj ; (s+amde./ dach

参考答案:    
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor are connected in series to3gku ( ru x8+wmko d;.g5a/hbv a battery. The battery is suddenly removed from k.kdg8;/gx5v3b uah+mr( wuothe circuit. The time constant for of the circuit represents the time required for the current to decrease to

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 havev 0uy(z n3vol1 the same units except:

参考答案:    
标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor is connected t8 gi jqqr:v*le3;c6sio an AC power supply. On this circuit, the current

参考答案:    
标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A pure inductor is connected to an AC power supply. In this circuit, thr;pc9 o2kh ca8e currentk 9c;c2aroh8 p

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 factor when the frequen9 6cin)p1 np1b;b dukjcy ij1)bk ubi1p;9 cndp6n s 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, th hzl; nllm a2ef8+1a*be inductive react8b*az+f2ma1 ;l hlenl ance 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 approaches zero,i4boxy4n/2qh6v b0.-s3lzwj5e-w bugj: czh the inducti.hgsw0oiv c4ny5j-- jb4bb2zz/l3 :wq xh ue6ve reactance 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 AC power supfmrw6h:ww:jw1-ie- fym 1au .ply. In this circuit, the curref1y:hw-rmawe 1:fijw-.6w m u 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 reactanty 5,)plr u5psce in an ac circuit changes by what factor when the frequetsp,py5ru )5 lncy is tripled?

参考答案:    
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage across a cam(r 43+y,ihalhc .hoq pacitor approaches zero, the capaci .+y3hh(qrl4mcaio h, tive reactance of that capacitor

参考答案:    
标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle between the voltages of ;j7pr1hswxc+ gikao9oi 9+5i the inductor and capacitor in a RLC series circuitco 9++rs wi5jixa7 iph1k9og; ?

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 circuit is defined : xu ual;;it z3lrwq)-l6z7q pas $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impeda: a6ei nu-lu xuf2xjk, -p32ztnce of the circuit increases if R increases. When is this statement true: 6p3-2zjax u2f kiunu,tlx-e?

参考答案:    
标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the cirg6tuwlmp6a f:b //j+lcuit 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 serieszs.+zi -mhj;mwbzq4, circuit. 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 series circp(zu b1j0c. znjo5wd;uit, the resonant frej(duzop wb c1z0jn.5; quency 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 resonanceh 94vwol( 3fbt3czo xm;5lu)f,

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 cid77xsa) cd,gb7wo 3 gprcuit occurs when

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A flux of $4.0 \times 10^{-5} \; Wb$ is maintained through a coil for 0.50 s. What $emf$ is induced in this coil by this flux?

参考答案:    
标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rot;qyy 4xn,z8okyk1q m6 ating in a uniform magnetic field of 0.20 T. Find the magnetic flqy;mkxoyz y846 k,1 qnux through the loop when the plane of the loop and the magnetic field vector are parallel.

参考答案:    
标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uniform magnetic fs(8 v9u 0d 5)pgtilgym2iku6mield of 0.20 T9 u52p iu8it6vmdmg0(ly )gsk. Find the magnetic flux through the loop when the plane of the loop and the magnetic field vector are perpendicular.

参考答案:    
标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m *mp45uvtb 9 kdgh2i6nt u7+a tis 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 magnetic field vector are at an angle o6tigumnt9u7kb5 v *+24hptad f $30^{\circ}$.

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 reducegrx1qb f,0,cl24 +cf tiff x,cd 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:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil changes ( lg6x(-wg0axjceu*o 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 a square frame with sirqeufsbr: fllo.dz p :1 .jf.8vp*t rd1u 26q;des 18 cm. A uniform magnetic field is applied perpendicular to the plane of the coil. If the fioddz1lq rf;lr.*ejqp61::8ut2 ufp sfv.r b.eld 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 wi+ a..tfjzn,bkth 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 t,m,l. c cdk*vand area $0.20 \; m^{2}$ is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s. If the resistance of the coil is 16 W, at what rate is power generated in the coil?

参考答案:    
标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An airplane with a wing span of 60 m flies horizontally at a locu*u,o,2 x x n2g*c4wpnf2axv uation where the downward component of the Earth's ma22anu,*,xg w o u4up*nfx v2cxgnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A horizontal metal bar that is 2.0 m long rotates at a constant anda3 kqut;2 ,k3b rc(urgular velocity of 2.0 rad/s about a vertical axis throu3 d(au 2rb3q;kkrtc u,gh one of its ends while in a constant magnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The coil of a generator has 50 loops and a crosscxh3 rgt troh4f,/8 odk)2;c p-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 consistscd:gh2 e:eq bjx*m 1h4 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 rectagb.w i4dqq 7f.o2kzk8ngular loops on its armature. Each loop is 12 cm lon.wbo7z4.f28q kigk q dg 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 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 consistipi 07fl45 13 ckmg6 d0qnudgds 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 ACiam:, nrx )i(i generator with an output of 12 V maximum when rotate)imax:ir ni,( d 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 generator w 6jeez/ y:g3csith 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:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
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 mo )i 5:uc0f8 zt8evpp pawmu2x-tor 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 op8svjz8a *hw;ld2po y)6oz/wq erates on 120 V AC, sw2lq;)z6ohpa z/w j y8 *vdo8and 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:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6y7cua3f3n7sqt 6 , fzzh3wlfm3ao g70 .0 W is connected to a 24-V power supply. The operating current is 1.0 A. What is the start-up st0,za6 amhf3zf3y unw o7 cqg7fl337current?

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 resistanj /0eb*jc2o jt+ek/e zce 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at z0bj*ec j /e2jo+ kt/efull 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 connecteds8s)j zl m6.dfht*h.k to a 24-V power supply. The operating current is 1.0 A at full speet 6.zf)d*s.hk hsjl8 md. 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 neededv.bt5jy 7xxgq0 ez17i 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 transformer causes 14 A to flow in t*i ytm-sk i1((nvx*s lhe secondary. How many turns are in the seiy ksi*sl- (1v*mt nx(condary?

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 ma5)y)/ n 3+qi zirazkqtny turns are necessary in a 110-V primary if the 24-V secondary has 100 turnn+it)3/5kzi qqr)ya z s?

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-turn secondarfng, g+p3 ir;hy coil. If the current in the secondary is 3.0 A, what is the current in the prim ph;ng,rgf+i 3ary?

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 trans xi;keg.:q fj.c j)dkg r+w21li2b,pvformer. Assuming 100% efficiency, how many amps at 24 V c2j+j .efbd:k gli;2xpq)1 vr. gc,ikw an flow in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer provides 7500 V atcqs2g*u /ss0h,mg/d yd+ g6qb 10.0 mA. The primary coil operatescms 6s/y2q+s q/b0,dg hugg d* on 120 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 0t,,fzfi)x4e-ca*hy8 rifcc turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, wharz-0 cifh4cf* ),c fi, txa8eyt voltage is present in the secondary?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 60 turns on its primary coil and 300 turns on its sec 2.7efzojqy dui9)db(ondary coil. If 120 V at 2.0 A is applied to the primary, what current is present in tdf9qio j2 ) u.ybdz7(ehe secondary?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 transformer has 100 turns and itg6/g m)8kx+ut2 sbngdpcd2+gs secondary has 200 turns. If the input current at the primary is 100 A, we can expect the output current at the sdxc gtm)ggb82ukpg2n + d/6 +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 transforoyj+-vm fbk 7mxq4a4mrg)k;-mer has 100 turns and its secondary has 200 turns. If the input voltage to the primary is 100 V, we can expect the output voltage of x7 kma4jm-;- mq +fg)4 byokrvthe 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 tradj- 68jx iz(zgnsformer has 100 turns and its secondary has 200 turns. If the power input to the primj68iz gz-j (dxary 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 maur/)3n a ,smA 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 numm ur3 aas/m)n,ber 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 Vsxvw-6 (wk cgj ;ohb9*. The voltage is usually stepped up to 4500 V by a transformer and transmitted throughhs-vb* 6( w;xgockj w9 a power line of total resistance 1.0 W. Find the percentage power lost in the transmission line.

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current aob (z5;fvn 4wh*ne 5nst 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmittedo hbn5*4(ne;wvz nfs5 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 has a totalktw 6+jb va0/-ncdcj./* o dfr 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 /- .t0jnjd fb acoc/d+r kv*w6a 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 gene ptqn dtkpd c-9/qk6/7;/ naferator 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 is lost when the d /dfnkq;-9aqcetpk tp/6 n/7transformer 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. xd + uf 8c1h8i3r5mfgdHow much less power would be lost if the powe 8dixm h3gdc+f1f8ru5 r were transmitted 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 b8rwy .0, 8e(,bb;kmdykhs zll e transmitted on a line with resistance of 0.60 W. To what voltage e mw80yl b,(hkl,b8;y. zrkdsmust 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 wx5+czv2xy4o r(yqk5 a current of 5.0 A. How much energy is stored in the coil's magnetic f(kryozwc5xvy 5q 4 +2xield?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains;q5 os/wzkwq/ nyf9/m a 6.0-W resistor and an 18-H inductor. What is this circuit's time consz/o kws9qwq5//nf y;m tant?

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 voltag5 6klzt-c* vsje in an AC circuit where the rms voltage is 120 V?

参考答案:    
标记此题
97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed pec.p 2pngkf0/u +o f*i)t v.-l5 cglzinto a 120-V AC outlet. What is the peak current?

参考答案:    
标记此题
98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC out 7d:z. jm7z1yiy9wrok uck /9flet. What is the resistance of the lamp?yuro7f.z1wc d9 k 7m9yk:iz/j

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 powerw3kka3oj 6qozk37z0 a supply. What is the peak current throughq kz730oo3jzkwa63k a 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 connected to a 120-V ac power suppl 2:a-: uvqaimrqd)zq1y. What is the power dissipated in the resistoi: )z :1madaruq2q q-vr?

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 tq;,u57wgek a 50-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 resis32 cfq9b3cvi rtor 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 resisto kr8te 5cu+ au9s 8-1.ksrpdxjr 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-mH indut ein k61;hn8gctor at 60 Hz?

参考答案:    
标记此题
105#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the inductive reactance of a 2.50-mH coil at 1000 oieoj i/6aa9a-74 jgtHz?

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 ind) rde)naugq 81row8n84btv a ;uctive 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 necessaryl.l*:/rink ck for 157 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 V AC at a frequency of 20 kH0zc od qa e-nj/x*efz5r4 9y*b4fo8p tz is applied to i*etbody4a cffr ox45qe z-* j/zp980nt?

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 throughlpm ph-o )m7v/h w mmospg, 5kihg/o79qr *.h9 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 capacitivl:wt/ 7 pzbx*we reactance 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 ic;i7 3yo( gyluu4mm/at 10 kHz?

参考答案:    
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-mF capacitor have a reactance of 1*yf6i4oohf) t k;aei1200 W?

参考答案:    
标记此题
113#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will the capacitive reactance of a 0.010-mF capacitor be 100 j9 i96)u : mqbwrm9zp :+dahlqW: lahq6)j9 9zbu+qrmwp :i9dm ?

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 c3g gl8tb- jl(mapacitor 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 resista5qim ,k* jdhe ycv1;;snce, 15.0 W inductive reactance, ce1imd*y;,h jqs v5 ;kand 10.0 W capacitive reactance?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
116#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total impedance at 1500 H fm pu+eo-6m (1v 9tf :dvx;qvt4lh,tmz if a 100-W resistor, 20-mH coil, and 1.0-mF ca pvm- qvfo1vx9hmm :e t;+4f,dt6ltu( pacitor 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 coil, 1oqythr 6:l 6y0qws hsern--uii* t :0and 1.0-mF capacitor awni-h-try u606e rt*lhys sq:qo 1 0:ire connected in series?

参考答案:    
标记此题
118#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connected in series with a 8a : ,n-.geh,dhmvkj e20-mH inductor, what is the impedanc m gh8.ed,avehn:k-j,e at 1000 Hz?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 serijgod r4(n-j o*es with a 20-mH inductor, what is the phaoo rnjg*d4(j-se 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 1.0-mF capac gffejf1x 9 -awr8+o/bitor for a total if bxa8+1jg9w fefo/- rmpedance 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 capaczkq; t2* ;:y*e x0b:0,xffefz lqs fykitances is needed in series with a 100-W resistor and 15-mH coil to get a total impedance of 110 W at 2000 Hzzb:xfeqyx ;k q,el2ff0 tk0yf*: ;*zs?

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 iw5y b4-zxvyw1 nductor at 5000 Hz for a total iv 4wzyxyb5 -w1mpedance of 40000 W?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 series with a 100-kW resis+cka5guy d18x ykfvt3 yj)k :6tor at 1.0-MHz for a total impedanceyjyf+kd x3v c5ka:ktu g1 6y)8 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 w)gpi ry8y 8i1zith a 20-mF capacitor. What is the impedanczriiypg1y 8)8 e at 1000 Hz?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
125#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series wit, x0o6/o,ax55s-gk;m3ve r4 ypzp -ckmtoi m th a 10-mF capacitor at 1.0 kHz for a total x v-scap,ikym er/t5 g53mkpzmo4o ox6;t0-,impedance of 45 W?

参考答案:    
标记此题
126#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed i-uoh, 6f igytz z:n42tn series with a 10-mF capacitor at 1.0 kHz for a phase at:4 -,ng zy62 zothufingle 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 wi yk2 w rxm /9zd/vs7f)k;mwyj:th a 30-W resistor at 1.0 kHz for a total m yj:rmdvxyk/2w/7 zw fs)k9; impedance of 45 W?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
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 qi6a/i,qeqbqbv-u +z (ca ux2x7n *0n-mF capacitor at 120 Hz. What is the phase anqv u6 +x e/n0a72in-qi*xqz a b(ucq,bgle?

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-W resistor, 2a / b3fw fcf7;k/yl+de0-mH coil, and 1.0-mF capacitor are connected 7+eba/ lw3dy fck f;f/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 capacitoro -acd6ig1ag8, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supdc-o8 gaa6i g1ply. What is the rms current in the circuit?

参考答案:    
标记此题
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitor of capacitive reactance 30 W, and an inductoc,l7hfkf)7wii*g 2 sor of inductive reactance 30 W are connected in seriesi7)7,w h kff2ig* clos 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51fly国际课程 (https://51fly.win)，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 for a series RLC circuit containingq8t qw/s.6qqa a 50-W resistor, a 10-mF capacitor, and a 0.45-H in6/qqaq .t wqs8ductor, when connected to a 60-Hz power supply?

参考答案:    
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor for a phase ane*uz, ,d5mgx2z wq;hlgle of g5w*d zm,,hxe2ul; qz$40^{\circ}$ at 10 kHz?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 c5d--bxa jfd vf8) (mfhas R = 20.0 W, L = 200-mH, C = 10.0 mF. At what frequency should the circuit be d5jax-fcff -8d bd) v(mriven in order 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 series circuit with 12.0 W resistantkt8a 9j; v9dk28o- jeuz exz3ce, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V power s3z89vketzjk; e8- 2 toaud9xj upply?

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 aqn)x+r lvq5 sj5+c90ujdidc .n AC circuit 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 resis2na;d0,4pgr; fvnxj a tance of 30 W. What is the power fa;v0 jdx 2,n4paa gnfr;ctor?

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 ci sucq79 lqhq4+fo* h3prcuit containing a 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz po q3*fs4hlqo9ph+ u7cqwer 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 1k:(:wra2huj) f x *sky5-mH coil in series? ah*wukyf)x( 2 jk::sr

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 a9. )5q2m/e8kf l9gphpww mohn 4.7-mF capacitor for a resonant frequency of 1mkf h2.9qwg8hp/ lnmo)we 5 p90 kHz?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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 series with a 3.7-mH inductolhjp5 +5le qq g(ta r.a-.pxb0r for a resonant frequxhl0 gq.- ( lbrqe5p+.5pjtaaency of 1000 Hz?

参考答案:    
本习题练习全部题目来源于51fly国际课程 (https://51fly.win)，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
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 wit2c4q 8:gsvdo a9zgyd2 h a 30-W resistor and a 40-mH coil if the resonant fr yca8gd4qzo2g sd92v:equency of the circuit is to be 1000 Hz?

参考答案:    
  • :
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题

    试卷内容到此结束!   © 2024 51fly国际课程 (https://51fly.win)版权所有

    浏览记录|使用帮助|手机版|51fly国际课程 (https://51fly.win)

    GMT+8, 2025-5-8 07:47 , Processed in 0.766378 second(s), 314 queries , Redis On.