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 j: ncc2j+isu 9njdk)8 okr(.nunits of magnetic flux 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 inductim;x)v y11l3rmjj pkfdqg3y, ;on 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 of ch 9/zlj tin rk3yqjp-;/ange on the inducedn yqi; j9rj3k/zt-/pl $emf$, 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 through auozr;7i 3ooj x5 ql1fg,q .a1p loop of wire produces what kingl1,ujz 7q fx;ri 3qp5o.1o aod 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 of a loop of wire produces what kind of change on the iil-xapq.b k-ps( aq+.4tgrj 4 nducedjax(.q. -4 akqpsrb til4p+- 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 from a magnetic ;5xf 4:p;h yl5 mdjivsfield 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 current in a conductor .:q ,kvifi)mm+lf jz 9will be that which tends to produce which of the follom),9vffi+z lk iq.: jmwing effects?

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
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 qqk58zp j-bb; swq:;wbhp5bkx)p r) r:x ag(+is held above its center with its north pole pointing down. x5-a;pkbp:z b bkbrqsjp)rw)hq8(;5wxqg+ :The stationary magnet induces (when viewed from above)

参考答案:    
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizontal table. A b-ozlyh +skkbo h9(6y3ar magnet is held above its center with its north pole pointing down, and releasedlhoyos6h9kb(-y3 z+k . As it approaches the coil, the falling magnet induces (when viewed from above)

参考答案:    
标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a table top in a region where the magnetic fieldhwp0 p(m 0v(m 4w0h:l- usy34sxntjq t vector points hw0ns( 0stl0tv(w43pmpj m-u:hx 4 qystraight up. The magnetic 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 a lez;mr6i.0 ( u uw j:clsgtru ),/ztgt9gvel table top in a region where the magnetic field vector points straight up. The magnetic field suddenly grows stronger. When viewed u;l 9 / ugrzt,0gt6g rt)uzswi(cj.: mfrom 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 horizonnf(s b1 s3j,autal table top in a region where the magnetic field points straight down. The ,s(au 1fsjn 3bmagnetic 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:    
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 a horizontal table and carries a*p2a * uglnoe4n 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 inducen2ue4 p oa*lg*d current circles

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
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 enterlb wlyrmt4 n3aw*:yn 55 ev/c*ing first. As the north pole enters the wire, the induced curren/b mn5y atlv*5w43r:nc w*ye lt 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 speed35pidaq m3jkwf7 qlv0g b8x1c ;32mh(q qb;sc about an axis whose direction can be varied. In a region where a uniform magnetic field points straiq(bhwb3 3g5lmq kqd 20p x1qmv;i cfaj 8sc;73ght 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 w8iurmq7i nl3;x 6dvg8r-hwg9 +y; o xsire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magrdrxm8vo7i3gg;6l su+q; wy8n h xi 9-netic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

参考答案:    
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. , hb7k1ue-+vur:btbs
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 ab0v)4k4bx 0ff;f hpqpw / bl:an $emf$ can be induced in a loop of wire.
参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A wire moves across a m c x9 ,fkri) 0bo2;g0nofz8pnyagnetic 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 eas5 5fe*b h2nk8 mk0bllut-west direction) is moved northward at constant velocity through a magnetichm kleb 82l*0bu55k fn field that points straight down. Make a statement concerning 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 bar ry 5nc3u,(jhy7 zpsv+cotates 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 transforms x 0q5lzlnc.)tj9gf/m

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 each second. The fre33gbbp7u6tfom; b w5kic 8hx*quency of thp7tbhu6*f;cb3ok 5 b3ig w8 xme $emf$ 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 :2f(i+w4p ge)w m* (qltvdhq uused 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 devcbw,coihd +v 8v5+rk2 u hs;j.ice 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 1sn/ z(ffocw3yu*w7s the secondary coil contains more loops than the primary coil then ifz*s( 1wn/sfwy u3 7oct 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 secyo ,x*y ./vleiy3yuk )ondary coil then it *ve)k/yo3xl yu.,yiy 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 powelhky5 cjsk-2. d nc4x5r input

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 circuit,*mt4( ohmq nr7vzx 4yt/*p,ddqc.h:f

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 /v:t5;t ucnx1kp1qyp6zu 6oc are connected in series to an ideal battery of constant terminal voltage. At the mom x1uckvq 6u:tpoc1n t5yp/6 z;ent 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 to an idealo s3.b.rnxra2 *8ilu,2n hmyd battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the..2yri,x m82l*3dnanoruhs b 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 resistank1er02o5ylu q ce 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/rkvht28q8+gbub c - 7wq-zbctance 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:    
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 serip0kxy 1pe(hd4es to a battery. The time constant for the circuit represents the time required for the cuy( 4d0eh1 kxpprrent 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 are connected in series t hd.uu/8ln4fw o a battery. The battery is suddenly removed from the circuit. The time constant fnu w.f d84/lhuor 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 hav:ul,hmy/s q t6 3yzzo)e 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 to an AC power supply. On teg6h+y/h u0d vhis 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 to8:,nu2cuqb3jszhz(4 oag fz b0u6a9z an AC power supply. In this circuit, the currenhsb806azz,9jua 2nofu43uzbc (:zq g 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 in an ac circui8 l *syqnj9o;pt changes by what factor when the frequency isly*9o;np qs j8 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 a9i- xzgm;)cz :s1kuvw cross an inductor is doubled, the inductive reactance of that induc1ukg;v-mw izs)9 :zxc tor

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,mc3 iq+o - q+66zndfeq the inductive i+3 qnqf6m ez -qc+do6reactance 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 supply. In this circuit,e*34i d*a sxi p9h0+ -c wcll5dl:npkv the currenwskvp5cad* x*ll93in4 +: c -diel h0pt

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 reactand1a a5v 7-nb1u0g1qh5kj hswmce in an ac circuit changes by what factor when the frequency d a-11aw u bj1v5hq7 n05hsgmkis tripled?

参考答案:    
标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  As the frequency of the AC voltage across a capacit q)zg/ g /xgb69akfm)ior approaches zero, the capacitive reactanc6mx)bgz a9qik /)fg /ge 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 the inductor ayywh g+wyg5c i t;sx)-j4( omru3d(: mnd capacitor in a RLC seri h:)+54(; owyxg gimyywd-c(jtus 3rm es 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 an RLC circuit is defined hok ozt/;u 9r1as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the circuit s7* q+ja9e nsxt c7wt m14eu1wincreases if R increases. When a7 *swq4m1esj+nx t9 1uwtec 7is this statement true?

参考答案:    
标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The3 9w1 jujve(z2puqcp ul+k6 t0 impedance of the circuit increases if $X_L$ increases. When is this statement true?

参考答案:    
标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC series circui; ;n3ts.tpya mt. 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 cirs2 om*dk4e,m/9w *hfe gz oo3ncuit, the resonant frequency of that circuit *, ned wm/o o*sf29goh4e3kzmwill

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
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 /g- krr,d64sz-/ jc ktld4:mjes: ssnm/w7hmresonance,

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 oc//yxzj /tt-.c n 5; i,ipyjhqscurs when

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

参考答案:    
标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotat298zpqt oz2mvfe .)qa ing 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 veco t2 z.9aqqfv2m8) zeptor 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 unif*m d8b49cvs o6rpx )x8hbpow9orm magnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of ths womxd86pb9b9ox4 8cv )h*rpe loop and the magnetic field vector are perpendicular.

参考答案:    
标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of radius 0.10 m is rotating in a uniform magnetic field of 0. mf3:,p ybzxa,6r9 ib33pipih v4 nmr.20 T. Find the magnetic flux through the loop when the plane of the loop anr b3x,mp9 :3hvbiz in4 ir.pm6fyap,3d the magnetic field vector are at an angle of $30^{\circ}$.

参考答案:    
标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The cross-sectional area of an adjustable single loop ib;pazb1cr93 a *hh0tm s 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 f3k f3gow;.lechanges 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 frasvvqo5hjz +*-a1(i ohme with sides 18 cm. A uniform magnetic field is io1a5js h(o z*v+q-vhapplied 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 of 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 wi+3 hh5m/qn jyueq(1 zdth 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:    
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
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil of 160 turns and are3oa;- kpzrob6s; j n6ya $0.20 \; m^{2}$ 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 location where th.r3z jbp/musl:/jh dkwqe0: p +hth.3e downward component of the Earth's magnetie3 z3m+::p .hrt0b ujpksqhwdh. j//lc field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
本习题练习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
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 dmjw75zg*at9 of 2.0 rad/s about a vertical axis through one of its ends wh7*t9dwa gjzm5ile 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 h kudhhi26w74has 50 loops and a cross-sectional area of $0.25 \; m^{2}$. What is the maximum $emf$ generated by this generator if it is spinning with an angular velocity of 4.0 rad/s in a 2.0 T magnetic field?

参考答案:    
标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 tur m3wpo3rxuzzj: v1w4 8ns of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced $emf$.

参考答案:    
标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator has 80 rectangular loops on its armature. Each loop ibw2i5w-t r 0wjs 12 cm long and 8 cm wide. The armature rotates at jr2wiwtbw 05-1200 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 consists of 100 turns 4;vftj iof (pxlp+ o:/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 ,cc57,9 az k j1xa2rf dckj)ssto construct a simple AC generator with an output of 12 V maximum when rotated at 60 Hz. A magnetic field of 0.050 T is avaid2scr9 j ,afa ck cj7,)zks5x1lable. 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 w .4cz,v(zo d+nj4iru o).c(vv+ rhffaith 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
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 ope,w8u6kqm j+r xr7/dhz2ikg j0rates 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 e * te2bswh6+dmf r,3qresistance of 6.00 W. The motor operates on 120 V AC, and when running at full speed it gemtewh2, 3q *+sfdb6ernerates a back $emf$ of 105 V. What current does the motor draw when operating at full speed?

参考答案:    
标记此题
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is connected to a 24-V power suwzsxliuar-h619 jl4 a8oy) l: pply. The operating current is 1.0 A. What is the start-uply)azajswrh xl84oil:9-u 61 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 W3m vd ( q*at7av88o9mr kk.wzi is connected to a 24-V power supply. The opervdom.3kt qai 9a7w8z8rm k(v*ating current is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W ii5z/xuu o(:p-c 7inmy s connected to a 24-V power supply. The operating curren(pi iy 5m z-/ncx7ouu:t is 1.0 A at full speed. What is the back $emf$ when the motor is running at half speed?

参考答案:    
标记此题
76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A step-down transformer is needed to reduce a primary voltage of 20l2pfr cvu3xjrbfhl 6v.*-s $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

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
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 c2lr0 n b+ 0w4n,4zgb+dzkmol a transformer causes 14 A to flow in the secondary. How many turn +cbnngz+,kzbl2omr4 00wl4 ds 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 pnd s78;.km (ud hpb7lql,in,in a 110-V primary if the 24-V sendb 8,,7un k;.lqihps dl7m(p condary has 100 turns?

参考答案:    
标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists of a 500-turn pvlqknz dez)4bg,0.u57y * zdmrimary coil and a 2000-turn secondary coil. If the current in the secondary is 3.0 A, what is the current in the primary5m *kg zu4e.7 yqbd0,ldvnz)z?

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
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. Assumi/(d1wvy/gq vjuq; 8ilng 100% efficiency, d;uwgjvi /8lv1q(qy/ how many amps at 24 V can flow in the secondary?

参考答案:    
标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The secondary coil of a neon sign transformer prov,( m2avw82:zbtxi apx ides 7500 V at 10.0 mA. The primary coil operates on 120v28 b,2 a atz:i(xmxpw 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 n5nt2x-q1 o 1uiag.bh primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what voltageqxt5.obing2 au1 1hn- 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 i::qq xxotbjkad r277- nv-k.e ts secondary coil. If 120 V at 2.0 A is applied to the primary, what currentjqo2k-t.vb-daq:e7:x 7 xn kr is present in the secondary?

参考答案:    
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secogcts: -j )z5 oa7cj0ycndary has 200 turns. If the input current )cjs ao5c0z- y7t:gj cat the primary is 100 A, we can expect the output current at the secondary 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
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 turns. If mc; ghii/ 1q) )ub5ptqthe input voltage to the primary is 100 V, we can expect the outpu5pmb/q1u)c)ih ; gitq t 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 scani*x4kox 1 )econdary has 200 turns. If the power input to the primary is 100 W, we can expect the power output of the secondary to be (neglecting *knao1 )xi 4xcfrictional losses)

参考答案:    
标记此题
87#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually sl p1yr 3n.mocci)4v 7z+7(viikn (tdttepped up to 4500 V byy)(ti4td3ol znmv c pik in(.+cr771v a transformer and transmitted through a power line of total resistance 1.0 W. Find the number of turns in the secondary if the primary has 200 turns.

参考答案:    
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usup5p(zvu9j f*m ally stepped up to 4500 V by a transformer and transmitted through a power line of pmu( v9f*z5pjtotal 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 volt dva81.s a8lxmage is usually stepped up to 4500 V by a transformer and transmitted through a power line of toms81x8a vd a.ltal 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 tot:52k.5b:zcpyoz 1fzo )/w)dk dsvkfbal 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 transformer were nocobds2kdwfz:p/bzk. 1:)5fzo5 y ) kvt 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 ud d3v j):qylk:.u9nlu/qyyu- .v a;qline 50 km long has a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy ikj dyq)u.a l3uquvv-9/ud.:n qy y:;ls 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 dow,aiorwvj6,/n0f, o-/qu-i jk- y khnkn a 6-W line at 1000 V. How much less power would be lost if the power were transmitted at 3000 V instead of at 1000 Vu,h-j-ya6 w-j// kifvikr,qk , on0on?

参考答案:    
标记此题
93#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The output of a generator is 440 V at 20 A. It is to be cqr0t)t df2lv;,vj, t9l/ qggtransmitted 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 not to exceed 0.010% of the origit9)l gqjdtv0q /2lt,r,fv;gc nal power?

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
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 mapd1s; 6v (iris stored in the coil's magnetic d p; rva6is1m(field?

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
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains a 6.0-W resistor and an 18-H ibir gm vo1elojg9; wc 5g.x/1(nductor. What is this circw /xb ce1i;. om 59glr(jg1ogvuit's 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 circuit wherefw3 /px y*zihro 50k-c 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 8,:umbmenu )t,mu ; sginto 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 resisjja lccyf22vb5g10n 8tance of the lamp?l v2jgcc n1 y8b0fja25

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. j7xx7as/+k8 85 h8ouwsa pio i What is the peak current txxa o/7ki8 w8jso+h7ausi5p 8hrough 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(le 0ytwi6; d58uquglnuha51 -V ac power supply. What is the power dissipatt1 uqg65 aiyuhw(l; l0 8edn5ued in the resistor?

参考答案:    
标记此题
101#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W r (ys+ klulemw3ea-u*8s*ad 7xesistor 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 re ,8eg7d4fr guwsistor 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(5y;4 p)fqptzl .uhgmr 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 kq- gs;/w3g5imtrmv;zxf q8 )of a 1.0-mH inductor at 60 Hz?

参考答案:    
标记此题
105#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the inductive reactance of a 2.50-mH i7c k(qjtbsb,.wpmu m-tn;6 0coil 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 9:hz*q 6vcliq 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 nnwhbofx-11 n5hf z/ z3r0+m9 0cic/b2uv flguecessary 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 in9jae.7 (xtmtd.;*z vsbk t8etductor when 120 V AC at a frequency of 20 kHz is abz.vte8 ktx. tsde( 9;jm t*7applied to it?

参考答案:    
标记此题
109#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 2.50-mH coil due to a 110-V, 60.0 2xhc2xfq2kgf h j ;f53Hz source?

参考答案:    
标记此题
110#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the capacitive reactance of a 4.7-mF capacitor at 10 kHn ob0 wl ia-r(vj-q1u8z?

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 ai0 xufit z2,a,i14 hbth;nb7w2 ewyt ,t 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 e0x1b(cz-y(.c lzpp xj-f9v2 mkwvm* a 10-mF capacitor 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 wilff+),c n3flkpn u,h x1l the capacitive reactance of a 0.010-mF capacitor be 100 Wk31 pfunxl) c,fnh+f, ?

参考答案:    
标记此题
114#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the current through a 0.0010-mF capacitor at 1000 Hz an,bpikkkpkoj; ++/5 6a3aiy gz5 (sxfcd 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 su8kd;4qetmk3y4py 7fei hf f wt2+)f8eries circuit with 12.0 W resistance, 15.0 W inducti8i3yd87 p t eehtf+k )qkwf ;2fu4fmy4ve reactance, 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 Hz if a 1/:,ogaqq ecm9 1s+ bq9 rw1yb:t-xe ou4qx fc;00-W resistor, 20-mH coil, and 1.0-mF capacitor are conc 9 m:os;qr-9,et w+u/b4qq1ycgfxq1: ae boxnected 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 jus hrtt(a ogc,i3ss09)t l/ 3if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor ars9at0itj( rs3)lt g/s3oc hu,e 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 qfvc3b,bjz 9p6; 4 wx,4zrbu eis connected in series with a 20-mH inductor, what is the impedance av934 peb,q 4,fx z6 zubrw;bcjt 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 connecbtqvy xdh .3ine u;2;6ted in series with a 20-mH inductor, what is the phase angle aty3;.v6 uqhit2e;nx d b 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-m69tno:yomu88 b+oypzF capacitor for a total impedance of 100 W at poz 8u6bo+9t : 8ynomy1500 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 100du()* zx2hts dm.0 oean3lylh;9pky :-W resistor and 15-mH cks3;0un a)h*:xzd yll o2md( 9etp.yhoil to get a total impedance of 110 W at 2000 Hz?

参考答案:    
标记此题
122#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance must be put in series with a 450-mH inductor at 50)x dzhnvavkucb7ouvm7 .+ b 8r:r +97j00 Hz for a total impedance of 4000bx o:9z7 a.ndbu87 k +rv)urmhjv+7 vc0 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 j6nb,f9n8ycj a 100-kW resistor at 1.0-MHz for a total impedance of 1c, j9n ynb6jf850 kW?

参考答案:    
标记此题
124#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 10-W resistor is connected in series with a 20-mF capacitor. What is the impe42yno g (/mxz ob*/wradance at 1w( /gaoxnz4mrby*/2o 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 needekik x*1rh:pkvk9i 01 wd in series with a 10-mF capacitor at 1.0 kHz for a total impedance of 45 W?9:vk piwxk*11 krh0ki

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 inm4.lw9xa4) p1ez*9v shu; y ondoqqf 8ta0)wj series with a 10-mF capacitor at 1.0 kHz for a phase jud1q08s;4 mw9*wq xpyvn o tf4e)z aoh9al).angle 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 3fcsp2bo;jf;,.(xl 2zkge5(ekkfr f 30-W resistor at 1.0 kHz for a total impedance of 45 W,(orfz x3s ;cp gjbl; e2ke5kkf(ff2.?

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 capacitor at 120 Hz. What is 3keebq fg *1gvu) 6ma(the phase angle6(vmfge1b*ke3 ga qu) ?

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, od;t w q5;*i/bzqkvi+20-mH coil, and 1.0-mF capacitor are connected in series?i/v*b oi;;qtk wz5+dq

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 rebq 4/rv2 x0oppa0.zdb sistor, a 10.0-mF capacitor, and a 0.350-H inductorzoqa.bb 0p024dx vpr/. The circuit is connected to a 120-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 cs 7i:inole)h9 apacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What current flielio7s:n 9 h)ows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a series RLC circuit containing-.t /gx 4kzsst a 50-W resistor, a 10-mF capacitor, and a 0.45-.zx/s4s ttkg-H inductor, when connected to a 60-Hz power supply?

参考答案:    
标记此题
133#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary in series with a 500-W resistor0lb;pux3;9u cxvio5 w for a phase angle ofux3 wo9lvip0 u5x;c b; $40^{\circ}$ 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 what fr9cew dj /s3b z,ve.a8oequency should the circuit be driven in order to have maximum power transferred from t sev/c,owae3dz b8. 9jhe 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 resisckjpd: xnf).6ff* 1notance, 15.0 W inductive )o* d1kxfp fn6j cn.f:reactance, and 10.0 W capacitive reactance, when the circuit is connected 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 circbe q:-c,lznf:q) kp90qs p*go uit 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 30 i baq 1x 7+vanze6de+)W. What is t +xdev+ 6eaa1)n zbqi7he 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 RLu(ffou 8j nh ezvx9z97 e0rf34C circuit containing a 50-W resistor, a 10-mF ceef9u 87ojuhff 9(0z3r zn4vxapacitor, and a 0.45-H inductor, when connected to a 60-Hz power supply?

参考答案:    
标记此题
139#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the resonant frequency of a 1.0-mF capacitor and a 15f(i8jhezel/d o vf5o .vw6-2t-mH coil in series?flh(ovvf w 8e25./ o 6ti-zjde

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 )mfi*2 t p7ife4y0n jud xd.-vseries with a 4.7-mF capacitor for a resonant frequency ofi4fefium)*-70j2 pd x ytn. dv 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
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-y p:ltvh; mbw3 4)*czzmH inductor for a resonant frequency of 100 b*4tzhlm y;3) z:cwvp0 Hz?

参考答案:    
标记此题
142#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What size capacitor must be placed in series with tl5nn 2ls: 9fla 30-W resistor and a 40-mH coil if the resonantl9nfs2 5:nt ll frequency of the circuit is to be 1000 Hz?

参考答案:    
  • 答题人:
    •
    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, 2024-7-9 06:21 , Processed in 0.662661 second(s), 305 queries , Redis On.