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 9ho/b -ni q h91 gfnv9u-qh(uuunits 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 induction sn bo*d 8smctb,1q.n:c tates 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 produ x4u ax4k2yah1ces what kind of change on thyxu4h42 ka1 axe 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 through a loop of wire produces whgyyw +o9x 7gq.at kind97wx+.yqog y g 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 wha0ncnd3. 7c bp8.nvsfht kind of change on the inducedn.n .cn0spc8v7 bhfd3 $emf$, 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 fielv -,*mgsl /1y/ pw5iy y4vhanpd 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 induc u2lqyqw61 7exmsl): oed current in a conductor will be that which tends to produce which of the following effec uyq7m oq:xes16w2)llts?

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 0s0oenqi711n:sy ;zg-z pddso j/t8fhorizontal table. A bar magnet is held above its center wiz yd-pdzgt1iq :;/s08 n s7s1jofn0oeth its north pole pointing down. 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 tabkk05+ c upjd;qxx8-fr h:src jsbp 395le. A bar magnet is held above its center with its nohpjs0 xxjk559bq-p;f s:k 3cd 8 +ucrrrth pole pointing down, and released. 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 magneticc26f8 hzyim )v field vector points straight up. The magnetic field vanishes suddenly. When viewed czvihy62 )fm8 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 level table top in a region where the 9a ycn qt,y1phbbmx2e+8vp0t 4 ws(3cmagnetic field vector points straight up. The magnetic fieldy pbvab typ(0h2ncw439 +scx mt18q,e suddenly grows stronger. When 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 hor 8 fmy.pmsb2 i5)yb(.qx aygc2izontal table top in a region where the magnetic field points straight down. The magnetic field disappears suddenly. When viewed 5xbycm ai qb .2m2.s)f yg(y8pfrom above, what is the direction of the induced current in this coil as the field disappears?

参考答案:    
标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A long straight wire lies on a horizontal table and carries an ever-increaiv1: ifj0q3nqr ze2n 4sing current northward. Two coils of wire lie flat on the table, one 1:njrq4qfi e z2 n30ivon either side of the wire. When viewed from above, the induced current circles

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls through a loop of wire *syoe: -;bnm+ue,r cr with the north pole entering first. As the north pole enters the wire, the inducc :smyer ;-u *+benor,ed current will be (as viewed from above)

参考答案:    
标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotated at constant angular speed af gemc :uj)3q j x6pxc1.x(nt1bout an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of ngjp6etfjc q1 x1cx.(m )x3:u 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 consdc1l wpt2oxm0twz98 i)xj 7 v6tant 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 of rotation if tj i98wxdw2p6ot7lc1t0z) mv xhe 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./9h(y.bidi + bpp l.ldzg)n.g
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 01zvvys2h .aii-+j ,c )qyet fthat 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 magn-,gd0wsr.uarv- f6 ceow- k7l etic 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-w3urk jq)b, ir7 nlq37mest direction) is moved northward at constant velocity tri3q7m knrjbq3l )u, 7hrough a magnetic 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 rotates at mewz 3/k9 egs(xo8;pkdw; /us 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 generato .,x(hlhm0x.dip pn phxz3:4wr 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 revolutions ea cp3 43oh3jov4pp 29nqhepx i/ch second. The frequency of tq339p4 php 3 4/2eiopncjvo hxhe $emf$ 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
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device usedns qyntm z(j7k x.p 2.w*4mb/x 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 devk(qbrx994gtjqj 8d )zyv/ :d fice 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 ck1( kn sjj4gc*cfh/4w ontains more loops than the primary coil then it is c *fh4/ jjksw( cngk41a

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 mor(c1 zy;a/,m irz9ultme ket2(e loops than the secondary coil the9 1,ure tz(eiaz/cltym (;m2kn 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 /us*. bn ri1ym q msk7f48ru jmx*r,0bpower 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 ci0m*;6 h;b(pl k jv w-da(b4kpihoe w04elav6 ircuit,

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 constt k vqh*yip1gn)z1j+ly 3j; ;o-ult -jant terminal voltage. At the moment contact is made with the battery, t31ip-l* jt vnyy1;+q)oth j- zl gkju;he 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 zpr0 /no l bc1( *uo:dwne8v0mconnected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the io 81rvzb w0p:nm( 0onlc/ e*dunductor 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 resistance gy; e 5o:y,ardR is connected to an $emf$. After a period of time, the current reaches a final value of 2.0 A. A second series circuit is identical except that the inductance is 2L. When it is connected to the same $emf$, what will be the final value of the current?

参考答案:    
标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RL circuit with inductance L and resistance R is conhv6l n6flu1 /cnected 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 series to a battery. Thfeg.7 agx zc5/zpf+ d)e time constant for the circuit represents the time required for the current to ga c5f7ef/xd) gzp+.z reach

参考答案:    
标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistor and an inductor agk(7l 5s65yfxh nyz a65 ,ssowre 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 7y6 xsl,5ays5 hkz(6n5o wgfsthe current to decrease to

参考答案:    
标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have the fuhmmlh,be 8-v: ha-; 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, thevc/gj4r ) s2fu 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 qoo0n,b:c5uij(yaqbwy*/u- this circuit, the currenb/0*wqj-( yo na5:buu i,coyqt

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 .jkr(fk ejda4eqk 8zg;x :4,k an ac circuit changes by what factor when the frequency is tripled?,zkg4fqj ak.4rjk(de xk;:e8

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 the1oqspmmj2;w 22zr 7 -e m;rb 6p:jjicz AC voltage across an inductor is doubled, the inductive reactance of that indu6bp2w;js21rjqzm i; :r pjm-zce 72 moctor

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 induc0 alma h5;oel(tor approaches zero, the inductive reactance of that l;a ( eoml05ahcoil

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 circrm;g1hi17q:dx wcm y d(q1o n*uit, the curre1roiq*c( dqghxm 1my: dn w;17nt

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 cirsjp -p+f:a )zf beviy jq,z1,6nlf89kcuit changes by what factor when the frequency is tripleds,z i+npybq,k-zef1f )al8j: fvp96j?

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 capacitor approaches zero, the capka.vib hte580acitive b5.0 ivtha8 ekreactance 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 and capacitor i,30 w1 etayfhcn a RLC series1fc w,y0ht 3ae 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 z ;:4ket awtbg52gp/d as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the circuit increases if R ijrfb3of 46 )qzy-q eh.ncreases. When is this statement bjeo.f r4)f63 qyqz-h 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 circtw2 hkv1-avgbm82p ,n uit. The 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 serie ,az4v4 8e9(uyay zfdxs circuit. The impedance of the circuit increases if $X_C$ increases. When is this statement true?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 seric*0xccf 7 8oz5z/ga kjes circuit, the resonant frequency of that circuit wg f8/057z x*kzo jcaccill

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 rv8pjqz r28 l6mesonance,

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 cid8 q0lm,y50gf zy7ri0( sddmh4f f:ufrcuit 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 radius 0.10 m is rotating in a uniform magnetic fiev/e; lqq( *qh x+.9kdoi/jvn zld of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and the magnetic fi d;e(qjo/n*l.v+9xqqhk / zvield 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 field ,* *cu /njndhgh4qo ;j4j01myinvhh 4of 0.20 T. Find the mag ;njn4dj/,yhq0 juh hgvnco4 m*i h1*4netic 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 r6mfjw qcgk 9g; me;i;)adius 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 loop and the mag;9gj cw6e g;;) ifkmmqnetic 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 ajmed x f3.uk95j ;:ri 6iukk3srea of an adjustable single loop is reduced from $1.0 \; m^{2}$ to $0.50 \; m^{2}$ in 0.10
s. What is the average $emf$ that is induced in this coil if it is in a region where B = 2.0 T upward, and the coil's plane is perpendicular to B?

参考答案:    
标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The flux through a coil changes fr(w/y8u 0oe c,;7yid/m6qmns4 g rdttjom $4.0 \times 10^{-5} \; Wb$ 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 squa 4k q2b/nj ,w;wqxcln)re 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 th4w/ 2b)n xc;jnqklq,we 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 with 15 turns and,.p/ q*brjd 6.ef kize 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 arp -xn6xlk;99 cy 0 *f+lcepslyea $0.20 \; m^{2}$ 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 mz6uv6+go5p d2so ;ayspan of 60 m flies horizontally at a location where the downward component do5y6s;62mz ogv +aup of the Earth's magnetic field is $6.0 \times 10^{-5} \; T$. Find the magnitude of the induced $emf$ between the tips of the wings when the speed of the plane is 225 m/s.

参考答案:    
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 y :s -bbk ebld6r/t5) 3ffa0ohis 2.0 m long rotates at a constant angular velocity of 2.0 rad/s about a vertlk /- ff3sda5)r6:0h ebbbytoical axis through one of its ends while in a constant magnetic field of $5.0 \times 10^{-5} \; T$. If the magnetic field vector points straight down, what $emf$ is induced between the two ends of the bar?

参考答案:    
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 areh (0vfjy i:f;4dd iy:na 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:    
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
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An AC generator consists of 100 turns oh o0glp 9:p0fnf 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,orq:u+ aw(s m8 g9zs:rc 3ral 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 rot8mr9as rzqroaw,(:c3us :lg+ ates 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 turn,w9( hr.iuvvll vy x*-s of wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to construct a simple AC generator with an qd;8uz (k -qancqu8+routput of 12 V maximum when rotated at -rua+ ckn( ;8qd8uqz q60 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 with a ma )imhu3:./e9abo lect 1g vms9ximum $emf$ of 8.0 V. If the generator coil has 200 turns and a cross-sectional area of $0.030 \; m^{2}$, what would be the frequency of the generator in a magnetic field of 0.030 T?

参考答案:    
标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance ika97ry h,)iocz w*d4 61t1 ogld- uuxof 6.00 W. The motor operates on $120 \; V$ AC, and when running at full speed it generates a back $emf$ of 105 V. What is the starting current of the motor?

参考答案:    
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance of 6.00 W. The motor o7:g 85 d *l7c iiwjax7urhs5fkperates on 120 V AC, and when running at full speed it gener dahj l ck87:g5firwu775i*xs ates 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 supta7ccn v.z h( b.l75ylply. The operating current is 1.0 A. What is the start-u v(h7 yt.nl5blaz7 .ccp 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 resi:p+sb;orjes)8x-j x cstance 6.0 W is connected to a 24-V power supply. The opeo+c8x) xs-;rjspjeb : rating current is 1.0 A at full speed. What is the back $emf$ when the motor is running at full speed?

参考答案:    
标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is con,(/ed l)a ulmlnected to a 24-V power supply. The operating current is 1.0 A at full d/ml e l)lau(,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 is9uria0 r j)w:w needed to reduce a primary voltage of $120 \; V$ AC to $6.0 \; V$ AC. What turns ratio is required?

参考答案:    
标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  2.0 A in the 100-turn primary of a transformer causes 14 A to flow inj 9mn*icy,y;3k0g pfo ev7rs7 the secondary. How many turns are in the secondaryrc y7mpof7i3 jng9y*s;0evk,?

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 p 0zcutb2, zcj 1s(p7xgrimary if the 24-V secondary has 100 turszj tc,p1x z2b70c (guns?

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
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An transformer consists)rr wtb5isi 9; c2ckb7 of a 500-turn primary coil and a 2000-turn secondary coil. If the current kib;7c2wir5 ct r9sb)in the secondary is 3.0 A, what is the current in the primary?

参考答案:    
标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  5.0 A at 110 V flows in the primary of a transformer. Assuming 100% efficien.p0ftk z r8) nol+cyusp547vlcy, how many amps at 2z f.)p4 7v +8yonu lcrs0lp5kt4 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 provides 75 i)z+ t9*yv: e glapclun-hc;*00 V at 10.0 mA. The primary coil operates on 120 V. What does the primary d p*h)* c:+geytnzllc9a;iu -v raw?

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 andm;(n1/ez lx9.iyr.uu8h vb j g 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what voltage is present in the sev9. u(rxm;ju/ nihzy 8l bge.1condary?

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
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 7b.4gbu)oqw6( glzlz36l 0qqp mp epio//6m i secondary coil. If 120 /pw4oumqq .6q/ zblog6lib6(m z)e0lgi p p73V at 2.0 A is applied to the primary, 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 transforme ihu4 n i2frgyy/5 n9fu+8xfq*r has 100 turns and its secondary has 200 turns. If the input current at the primary is 100+ ryu* /ffn x2f8yhn u4iig95q A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and .wx3(fjch1fyjik h 3j6q84lpez9 p k. its secondary has 200 turns. If the input voltage to the primary is 100 V, zeqc3i f.3(l6k hp4y. 1jhj wpj9kx8fwe can expect the output voltage of the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary has 200 t 1-z;+hu su a u26g1 vzr1cfqla)cbnt6urns. If the power input to the primary is 100 W, we can expect the po1l-2hzu zbvr6cfu6+gc1n1u a;a ) tsqwer 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 of current at 120 V. The voltage is usual 9:ute owykazp;8mo14p 48rpdly stepped up to 4500 V by a transformer and transmitted through a powe4;9mo8a ozkprte: 8puwd yp41r 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 currxdm9d2dp dmda 198vs 2ent at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 W. Find the percentage power lost in the transmisxvd12md mdpda 928sd9sion 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 v.ld.i eb.vlm5x2b5 a/gvgl7 koltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total rebg l.5k 5m/l lgxia2ev. 7.dbvsistance 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 total resisc fbh33s5 foe1cty) /rdz //xxtance 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 volfcx dx 1sc/f3/o/) bht 5r3zeytage 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. Asl f13 nzv+o, -ng(yv4whx*lb generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, tv(lghl3+n *wbvo n41s f -,xyzhe voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is lost when the transformer is used?

参考答案:    
标记此题
92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  100 kW is transmitted down a 6-W line at 1000 V. How mue 9gu* l8 74to qsepbbq8qe;z-5)g sikch less power would be lost if the power were ts 5i e4* 8oeputqb gslbk9qe;8zq)- 7gransmitted 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 440ig iob-zc o7*zad:: h3 V at 20 A. It is to be transmitted on a line with resistance of 0.60 W. To what voltage must the generator output be stepped up with a transformer if the power loss in tranh c3zd-iba*g7: izoo:smission 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 mt ded-m-m2hk39zd h3q uch energy is stored in the coilt3zh-h 2d mdm-q39ekd's magnetic 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 inducneg:5ox-nw/ otor. What is this circuit's time constantxwo g5-eon/n: ?

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
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 voltage is 120hu3k7.q lael8e8a)ry V?

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
97#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC outlet. What is the peak curr4o6ipdfq c.3 yfbom b6*yo9g0ent?

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.u1h yx3yy :0fw What is the resistance of the lam3fxuhy y w10y:p?

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 t96gk1dhs9g ua 120-V ac power supply. What is the peak current sd 1uk9 6h9tggthrough 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 supv -vuf/,f*m vwy(euk /ply. What is the power dissipated in the resisefv(my/f/ k,vuu w* -vtor?

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 resis.j wd +.t(nl)zd bn0kgtor is $I = 0.80 \sin (240 t)$. What is the rms 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
102#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W r(tcikc k/s+uy; 2fzf+ esistor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

参考答案:    
标记此题
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through a 50-W resistobbg+ p7-ms8vlt57:7dsrs h o lr 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 inductor at 69xn9isa 4p3be- wqm+ h0 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 10;pq/ yawgry*km6 g o*i. *;dj o.wjiu)00 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 inductiveb1n8nrqj. i8kyp1k ; l 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 induct* e ;ofmbbk uymjm 7m24+fo/3zive 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 f e g530tds8 tn1wbi1tfrequency of 20 kHz is applied t31is 180 te ngdbtf5wto 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 a 2.50-mH coil due to a j8q2::tu eegwb0s; mp110-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 reactance of a 4.7-mF capacitor hb 9hv)h7qk t :taume7m8 tw21.6waahat 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 h7azh( v/d+be +vqc k,zave 50 W of capacitive reactance at 10 kHz?

参考答案:    
标记此题
112#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency does a 10-m tqt s u, pequs4)kq+c99vmx6:F 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 capacitivew hbz)m 3.x 3 ,(mha-pdz4di w5iuviv6 reactance of a 0.010-mF capacitor be 100 W?zm,xd6mdvwhi.zabwv h -4 i( u33)ip 5

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 through2d04 m wo1qte:jjs/k-rzo o3j a 0.0010-mF capacitor at 1000 Hz and 5.0 V?

参考答案:    
标记此题
115#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the impedance of mj aw8b.c) ox.2w xm ;-3qpzjvy6gc y4an ac series circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.y-m p jwx3;q.2.)8v ga y4jz ccbm6wxo0 W capacitive reactance?

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
116#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the total impedance at 1500 Hz if a 100-W resistor, 20-mHq,5t9 8f h w3smujee:w coil, and 1.0-mF ca3s9mthjqw8wf e ,5ue: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 rewdpi s p;+ 0sph46eky1sistor, 20-mH coil, and 1.0-mF capacitor are connected in se0wp4h y;6 p+skspd ie1ries?

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 24a)/ ihiv+h mg0-mH inductor, what is the impedance a)va4ig h/+ih mt 1000 Hz?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
119#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a 1000-W resistor is connected ,+-ua .5vr vz 0uygfqnin series with a 20-mH inductor, what is the phur0vn-f+v,5z g.y auq ase 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 cienv5.8 ny/hg grcuit with a 20-mH coil and 1.0-mF capacitor for a total imped ye h8./nnvg5gance 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 needejhqd5, 1gv 3ihd in series with a 100-W resistor and 15-mH coil to get a total impedance of 1jd5hiq g,1vh 310 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 )s.hhv3 n, (rkq2pv .ut ll;f+k-edcd be put in series with a 450-mH inductor at 5000 Hz for a total impedance of 40000;3l(kk.-+ v2qphcl,)th.n sud v efr d 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 series with a 100-kW resinh8zrq;05e,vg t o*w cstor at 1.0-MHz for a total impedance of 15ow tc05g;nvzh,8q*re0 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 c h0s+yhf.kz*n7ite1 series with a 20-mF capacitor. What is the imped h0iye.nt zk*c17hs+ fance at 1000 Hz?

参考答案:    
标记此题
125#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What resistance is needed in series with a 10-mF capacitor at 1.0 kH f g/0 n3qkezjs4l6c1jz for a total impedancel jenz6/fs k4c1gj0q3 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 series with a 10-mF capacitor at 1.0 kHz for a c( .hqtr4 -wrt /as0 jltac w(no8xa+)phase angwrwht x/ra+c)( nca-sto8t 0.a4(lq j le 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 forum1mv - t b.,kzxdad1* a total impedance1b,mm k xa*uv. 1tdzd- of 45 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
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 at3b5y-y5 aq x5xez9 kzs 120 Hz. What is the phasekze3-xas59z 5bxy 5qy angle?

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
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, 20-mH coil, ans2 jj:lnu1a, r fj1qk1d 1.0-mF capacitor are connected in seri,sju 1:1f1j nlka q2jres?

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-We5 gkwj4k.0c k resistor, a 10.0-mF capacitor, and a 0.350-H inductor. The circuit is connected to a 120-V, 60-Hz power supply. What is the rms curr jkw 0c5gk4.keent 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 capaci.hfjw( kf0jn6 tor of capacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series to a 110-V, 60-Hz power source. What cuw (6k 0fh.jnfjrrent flows in this circuit?

参考答案:    
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a series RLC circuit containing a 50-W resistor, a t-lu4 y:lp(t8j: fh fb10-mF capacitor, and a 0.45-H inductor, when connected to a 60-Hz power sup:tpt f(uf4h yl-j:8 blply?

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 forw im* a peclt;)56da6i a phase angle opw)li*a 6c;6 iem5tadf $40^{\circ}$ at 10 kHz?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
134#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit has R = 2jpo 8rdj fjfz*m6*is.s w7- 8t0.0 W, L = 200-mH, C = 10.0 mF. At what frequency should the circuit be driven in order to have maximudzff8sit*w j8j7jrps . mo*6 -m 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 128imhau76t yrg4j :k+ m.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to t+uy:ma r7 kh gij4m86a 120-V power supply?

参考答案:    
标记此题
136#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The phase angle of annl.o2 i9 ubl ih/m1s2r 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 ha8n 55y(timia as an impedance of 60 W and a resistance of 30 W. What is the po8nmi( 5y5at aiwer 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 containing kvgsh)vg3q7f6: 1 mtua 50-W resistor, a 10-mF capacitor, and a 0.45-H inductor, when connected to a 60ughv:qgvkfts )m 7316-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 15-mH coil in seri-wx* (u(20ufj adzsm ies?i*(u mzx- ajw(0fs2ud

参考答案:    
标记此题
140#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is needed in series with a 4.7-mF capacitor for a r+v w 45yubm1dvl yby:,bioh 642 ai.guesonant frequeol2iu.1iby wby:u a6m+4,yvhvgd5b 4 ncy 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 for 54 pp2an(rv ykqhjl+6a resonant frequency 5( qnvah4p 2p6 +jkrylof 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
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 resistor and a 40-mnb3hh s *zf)zvq2( - /lrlltj6H coil if the resonant frequency of th-trjb (6 2vq*l/h)3l nf lzhsze 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
    本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

    试卷内容到此结束!   © 2024 题库网 (https://tiku.one)版权所有

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

    GMT+8, 2025-3-7 11:08 , Processed in 0.809608 second(s), 305 queries , Redis On.