题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp，上传完成后会在上方生成预览，用鼠标连续双击缩略图，或拖动缩略图，该图片就被绑定至本题，显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片，绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习：Physics Unit21: Electromagnetic Induction & Faraday's Law
本习题练习来源于题库网 (https://tiku.one)，是在线习题练习的打印版，您也可以访问本平台网站(https://tiku.one/)直接在线完成(注册并登录账号后在首页左侧输入试卷号 80 即可在线作答)，，作答电子化后可随时回放，查看每题答案与详细解析，搜藏保存任意题目；教师使用本平台可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力。本试卷的直接作答链接 https://tiku.one/test80.html
 作者: admin    总分: 142分  得分: _____________

答题人: 匿名未登录  开始时间: 22年08月20日 21:29  切换到: 整卷模式

标记此题
1#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following are units of magnetic flu g uybz(fo0f.0x except

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
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Faraday's law of induction states4tjm/l8 gu4z6 la o9km 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 k/4m8l 7hcu jkwa60p aq7gn nc0ind of change on the 0h4 ak7nccawum0n/q 78ljp6g induced $emf$, assuming all other factors remain constant?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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 w pz ohx)6* 53z+gxkak6f nte5(.:uxd vybz0yc ire produces what kind of change on tc+b6nuzv d0zfeyy: a*kohgx) k .px6t 3(5xz5he 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 f8czu: puv)7v(g5 db-koytxb.4r /h mloop of wire produces what kind of change on the induced 54/mu8vr-7(zx)cdyb :p uof.bk vg h t$emf$, 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 magn9zg87one)p +te4gx7bio u hu;etic 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 current in ak0 5.j2(zge53pfc gqv ot r uyg6,p,rx conductor will bey3j q ,,6(rpp zxr0g ukevgo.tf g5c25 that which tends to produce which of the following effects?

参考答案:    
标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on k ys 6bt0*qzu+a horizontal table. A bar magnet is held above its + uk0b6yzt*q scenter with its north pole pointing down. The stationary magnet induces (when viewed from above)

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular coil lies flat on a horizy,wzlrilsi iy:uo15w xf/12,r**y fqpi 1 z a:ontal table. A bar magnet is held above its center with its north pole pointing do* zifulr y:rys,:azoiwqi1xf l15,*2 y/wip1wn, 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 magnetic field vecto c4vich(t5oi0r points straight up. The magnetic field vanishes suddenly. When viewed from above, what is the sense of 0 iihcv5 4co(tthe 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 thpfd+90z :n bfield vector points straight up. The magnetic field suddenly grows stronger. When viewed from above, what is the direction of the induced current in this coil zb: hf0ndp9+tas the field increases?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A coil lies flat on a horizpkfgkl*.uaf */3s ylv o8rv*gy-4( q montal table top in a region where the magnetic field points straight down. The magnetic field disappears suddenly. When viewed from above, what is the direction of the induced current in this coil as the field disappears?8f.f3*ykru*sgo a-4 vvql mk*y/lg( p

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 wireyn.* y d8nom+u lies on a horizontal table and carries an ever-increasing current northw .*yd um+onyn8ard. Two coils of wire lie flat on the table, one on either side of the wire. When viewed from above, the induced current circles

参考答案:    
标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A bar magnet falls th wj7m 8:t8d:zx amfi+frough a loop of wire with the north pole entering first. As the north pole enters the wire, the induced current will be (as viewed fzm+:8:dijw fm8 tfx7arom 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 rotatedxsan) rxgs r0q4cg3+j 09v b-lzbd4e 0t9b. sv at constant angular speed about an axis whose direction can be varied. In a region wt z.a9 nsgqv3cbxrj 90 0s0s4 +bxrlgvbed-)4here a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be zero?

参考答案:    
标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A circular loop of wire is rotat4i-2 irxxyz gtp/ 2eg,ed at constant angular speed about an axis whose direction can be vixgz 42r-y x ,/epgti2aried. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced $emf$ is to be a maximum?

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
17#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Faraday's law.e4a jn,e 73mq(5 9 xvr0amozjh
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 thai zqr3wq(9p0gc5 fj o)t 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 magnetic field. Thelyy p8we .4q5a $emf$ 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 1-sv-43 o:l fa7 npw9 )cpg jfk6*v(gvaxjwygdirection) is moved northward at constant velocity through a magnetic field that points straight down. Make a statement concerning the poten-k 3swg 9v4jf) j(p* vgy16faocx: pal7wg nv-tial 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 a constant angular v8q;)dlybiw/z,f ow3-jq, x nxelocity $\omega$ 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 tran;c96 txe m e/rj+klgc;sforms

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 frequencyo 4x04 g,i) jpp3asdbs of th ,sdp ga4b 3)xsij0po4e $emf$ 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 devioi 6y m*9kgj nn.d.5nmce used to

参考答案:    
标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A transformer is a device tdeg y9nv81. dbx v.sd(sjq6z-eioo2;hat

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 sec5de b19;ud)yay/r4hjde c;kzn axi/4 ondary coil contains more loops than the primary coil then ityx;yz r ied14u54ddhanaecb/k9 j);/ is a

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
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, if the primary coq:7lnu+rfx czq ( *0yv5nd3peil contains more loops than the secondary coil then 0nve:fdcxpynqrqzu3* 5l(7+it is a

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
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  In a transformer, the power inputc.f,wp1lby6 gc(4+;e jsw dn l

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 resona/-c+z4wq4 9l16ggjl r,4k2wnq j o0gszzm kgcnt circuit,

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 bqxyz8g5lqa0*d; ;wao attery of constant terminal voltage. At the moment contact is made with the battery, the voltage az;0yo5*xl8q d;ga qwacross 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 ayx6t. oh4)ot/ eubc9 hn ideal battery of constant terminal voltage. At the moment co6htyou4.et 9cbh xo)/ntact 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 resistance R is connha. fhbm-9:cnut6 c1g ected 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 res uh +et/w,aux vwd,.2mistance 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 series to ,j +uljc x: .lb)dl3a9zkzsx)a battery. The time constant for the circuit represents the time required for the current t)a llz c 9jlj3sxu.bkz:+,)dxo 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 rrb: xx/*7ol q9*l yskto a battery. The battery is suddenly removed from the circuit. The time const*qsr: l97 o*byk/r lxxant for of the circuit represents the time required for the current to decrease to

参考答案:    
标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  All of the following have bvf4e jmsfr+6; ck)/o 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 jmtjilbt1l2f3 l zb/+ sl.:(i2glsys b8 fv*-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 4zaie2n *:xl cz/l1 mspower supply. In this circuit, the current1lc/lxnz:e2ms* 4zi a

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 uf;xeyy / v/jr-gh+5u ht t2p/frequency is tripl rujty/g2yf/-p e;h v/xthu +5ed?

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 voltagox6ph 9c6mz-jr, o,w(v z5fv we across an inductor is doubled, the inductive reactance of tho56w vc -(zp r6zof,,vhj mw9xat 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, the indbsgryk::)i05wv*g sductive reactance of th0: gdk):r ibws*v5sgyat 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 connf0ir oyor9xue9q.3m.vgmz3t 7).xai r )k :nyected to an AC power supply. In this circuit, the curren0r.xm3y gt9 e7.o.q 3yn)fror :mzki) v9iauxt

参考答案:    
标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The capacitive reactance in an ac circuit changes by what factor 7i-fljd/(6y +z-n0q i; a j relbc0alfwhen the frequen 0alyqi0b je7d/r ;lfjnc-i- 6(lzf+acy 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 A 8jnry-;;y t 8uamsfq:C voltage across a capacitor approaches zero, the capacitive reactance of tht r:ya nj;8y-qf;m 8usat 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 in a sxqx*+n8-- jtfm,vz eRj q8+ *xfm,-t-svezn xLC series 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 o4og l9it *; lymq( 8)gse0e l4vfni-ddefined as $\cos M = R/Z$, but the phase angle can also be calculated from .

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider an RLC circuit. The impedance of the cir 8l )khcnv5taovp88y2cuit increases if R increases. When is thoh8ck2n)8al8v5 vyt pis 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. The ipe. +c4g-yfm,q l) qu7bk ga0hmpedance 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 circuit. The impedance okv 6pdnf o1f 2r:t,jd8f 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 ig uslg9 lqk8; )/m3wpon an LRC series circuit, the resonant frequency of that circuitl ug8) qpl9k;ogws3m/ 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 byu ;du 5v1d /*dgc0n :x58s ykghlb:b x6z.ttvl an AC applied voltage. At resonance,

参考答案:    
标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Resonance in a series RLC circuit ocq8qfm gti;y1,;(sun oxv8hq(curs 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 m 7ojxru0 bsg;*agnetic field of 0.20 T. Find the magnetic flux through the loop when the plane of the loop and t*osjr u b07g;xhe 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 ingagski.r5-ctr hzs00j(o,s: 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 perpenda s-rkh.igrsoz(t,00sg:5j c icular.

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 frxn jknn2-/ x:ield 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 of nknrnxx - :/j2$30^{\circ}$.

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 reduced drn4 y0t-v;29 + ri(n svpzdijfrom $1.0 \; m^{2}$ 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 coisotu)d;i 1c:w0, ony 7l 8xtjbl changes 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 squarer7 trb)fw,j8a frame with sides 18 cm. A uniform magnetic field is applied perpendicular to th)rbfjwa rt8,7 e 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:    
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 ar/1 l3orf+z09yfzr qpn 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 areaqu ycywm.7s18z8z -e t $0.20 \; m^{2}$ 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 z- k 89frb61ljuslrc hq6b- (ghorizontally at a location where the d 1cub9z8h slf6gkb( -6lrq r-jownward component 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:    
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 angul hfxd6su7bg;b/n+ njoes *5rfoe -r+ )ar velocity of 2.0 rad/s about a v+soebhs) +g-j6 rn ;n7rode5*ubf/ f xertical 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-xa,; :)1e cqrr5. t t4mlnzqm; xko9jasectional 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:    
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 of wire of are-xr6xyx/y xc( wdmj0+v llb,6a $0.090 \; m^{2}$ 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 is 1.tqj3z yxwhhti- - 5q82 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.30 T, which is perpendicular to the axitzyh.qw3 qjh-58 tx -is 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 ko31dg nh x:;aof wire of area $0.090 \; m^{2}$ and total resistance 12 W. The loops rotate in a magnetic field of 0.50 T at a constant angular speed of 60 revolutions per second. Find the maximum induced current.

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Suppose that you wish to construct a simple AC generator with an output of 1 9ak:, n9 ud5t, mvscc6qwm3wp2 V maximum when rotated at 606w5m d9k9c3vasc tup, mnq:,w 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 m u,u5rl3vt7zbs9 bx q,f8xii4aximum $emf$ 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 :axwc +.ndixr1q 2 0eazxcw;/resistance of 6.00 W. The motor operates on $120 \; V$ AC, and when running at full speed it generates a back $emf$ of 105 V. What is the starting current of the motor?

参考答案:    
标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The windings of a DC motor have a resistance of aoupqkt 5g6;4kpp*g96.00 W. The motor operates on 120 V AC, and when running at full sggk p5a4qk po;tp*6u9peed it generates a back $emf$ of 105 V. What current does the motor draw when operating at full speed?

参考答案:    
标记此题
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.0 W is conmv 3fgg+ g;1ec*-i ojnnected to a 24-V power supply. The operating current is 1.0 A. Whati +moj 1;eg-fg*vng3c is the start-up current?

参考答案:    
标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A DC motor of internal resistance 6.zt/7n5g 7 ;3mnu /lwit. rgi,we* ovvl0 W is connected to a 24-V power supply. The operating current is n tivg *tnw.m3,lgi /vue77loz /;w5r1.0 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 resistancet*rh cn- z6/hkdfa/ .d 6.0 W is connected to a 24-V power supply. The operating current is 1.0 A at full speed. W ca /zr-.fnhk/dhtd 6*hat 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* yo2e +s7a xa0ml4kzp $120 \; V$ 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 a transformer causes 14 A to flow in the s vuyjon:)ojw yy6* p902jsr 6hecondary. How many tur6yj yor:jyjvs0*) 6uo9hn 2wpns 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 manyj xek7 ,5qy8+ 5qyzsxcvh4+ tucu)m;u turns are necessary in a 110-V primary if the 24-V secondary ha+yux ;ck 5)5 q+veuqmuhxz,y8 stj74cs 100 turns?

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 of a 500-turn primary coil and a 2000-enep2/s. of5 8-fby/0yg-ifmc rb8seturn secondary coil. If the current in the secondary is 3.0 A, what is the current in t f0- p e8cs8y/5f-e inrb2bfs.eyg/om he 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 ofkeq5,mka gmwo ko44 50 a transformer. Assuming 100% efficiency, how many amps at 24 V can flow in mm5aqokko 0k w54ge, 4the 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 at 10.0qbz ag:tcf78 f/t ull*uz :+o) mA. The primary coil operates on 120 V. What z bz t+oq f:8)ll/tfuug7*ac :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 2gqshd.5b d afrk3d:m-z+x: z on its primary coil and 300 turns on its secondary5g+d:as-: dqmz kz.x d2h3f br coil. If 120 V at 2.0 A is applied to the primary, what voltage is present in the secondary?

参考答案:    
标记此题
83#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An ideal transformer has 608yr1vis7* +(zuh6 tzgcvzze) turns on its primary coil and 300 turns on its secondary coil. If 120 V at 2.0 A is applied to the primary, what cu tz+7yz6ui *zrv(g1vz s he)8crrent is present in the secondary?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
84#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 100 turns and its secondary ha5kyn9)e hx9ixmz tj 3(s 200 turns. If the input current at the primary(9x x5 i9hzym3k)ejtn is 100 A, we can expect the output current at the secondary to be

参考答案:    
标记此题
85#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer habz,c-r78ex j ds 100 turns and its secondary has 200 turns. If the inputrdbczx j7 e8,- voltage to the primary is 100 V, we can expect the output voltage of the secondary to be

参考答案:    
标记此题
86#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The primary of a transformer has 1ted9 m/phsha, :dd.o500 turns and its secondary has 200 turns. If the power input to the primary is 100 W, we can expect the power output of hpad9o dhd/ mt,e.:5s 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 usuall cwsns5nt 8(0pa4q;v wy stepped up to 4500 V by a transformer and transmitted throupq 45scw;n a8sn w0vt(gh a power line of total resistance 1.0 W. Find the number of turns in the secondary if the primary has 200 turns.

参考答案:    
标记此题
88#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at vy 9v3 dk(g5 0js guun3iy+kzg1dz8 l-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 transmissiog1u8 -jz3d 5g3gyli 0(uk +zyd9snvvk n line.

参考答案:    
标记此题
89#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A generator produces 60 A of current at 120 V. The voltage is usually stepped/.fhha7ko,j m;3k afz up to 4500 V by a transformer and transmitted through a power line of total resistance 1m/az .ojk 3k,hafh 7;f.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 ;( mh(cpp 9o vo yh0e+mz*ysevyh3 jaz*og-),resistance of 0.60 W. A generator produces 100 V at 70 A. Inezs vvygmhec09o3 ( +j p,;)o(ohy hm* pzay*- order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. What percentage of the original energy would be lost if the transformer were not used?

参考答案:    
标记此题
91#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A power transmission line 50 km long h *0mzg km.ww l)xyqq1(as a total resistance of 0.60 W. A generator produces 100 V at 70 A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepygwxmzq 0k.)* w1mq(lped up with a transformer with a turns ratio of 100:1. What percentage of the original energy is lost when the transformer is used?

参考答案:    
标记此题
92#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  100 kW is transmitted down a 6-W line at 1000 V. How much less power woufkt43/ w ajr4rld be lost if the power we/r 34kwft4ar jre 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 h*xzn6 yb 3gbt7l xtx3/1n 4ih440 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 tn 4t bln3hbg/6ixyhx *xzt713 he power loss in transmission is not to exceed 0.010% of the original power?

参考答案:    
标记此题
94#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 4.0-mH coil carries a cur l5qwi*u9teo 3vp jf:. n3fpd3xtrh1s.. cd 1frent of 5.0 A. How much energy is stored in the coil's magnepis3.nu 1cd 9xf1te .qr*v p5wh3to. :ldfj3 ftic field?

参考答案:    
标记此题
95#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A simple RL circuit contains a 6.0-W resistor and an 18-H inductor. What is.029bbpf am/-jbr soc this cim r20jb.cs 9b-fabo/ prcuit'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 where thn*go,.o5i*o al7ev f0k: bcuce 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 into a 120-V AC outlet. What is t3xyy ku+c; ue+he peak current?

参考答案:    
标记此题
98#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 150-W lamp is placed into a 120-V AC outlet. What(6f(p 9ctd bczl vp+w* is the resistance of the lalp+cpwcfb*9(v6ztd( mp?

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 powerclrm7 je2q bou5s.. 8 q.t9mep supply. What is the peak current through the resistorjb.7e.rmlqpm5 82tce.u 9q so?

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 c 1dz- v0669biphb6 ynoee mnk)onnected to a 120-V ac power supply. What is the power dissipated in the resist9m1k6o) hi-0zpn6bbve ne 6dyor?

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 czt ( a8s/e0o 4g(ixvmfg2ts o 1ux9l/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 50yl6 rhj)ase; +-W resistor is $I = 0.80 \sin (240 t)$. At what frequency does the current vary?

参考答案:    
标记此题
103#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The current through bn k3o039wgawc27 nopa 50-W resistor is $I = 0.80 \sin (240 t)$. How much power on average is dissipated in the resistor?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
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+*z-jm o 3von8( t .idsl 8ep5vt/uqdi 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 oyzf mq1 :5+m 53kmyyyix-bxe:lmf/r :jcv(+ v f a 2.50-mH coil at 1000 Hz?

参考答案:    
标记此题
106#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At what frequency will a 14.0-mH coil have 14.0 W of inj 3 m1;uiwsp-fductive reactance?

参考答案:    
标记此题
107#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance is necessary for 157 W of inductive reactancey p/ bnf1w26,r0kb gag 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 frequencydjo9 ru(wi5sdw5s-2fpr zm+ 3 of 20 kHz is applied5+rwsp m du(z2srfoijwd53-9 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. l a1 ef3rw)mejlctr+1mn6,m50 Hz source?

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
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 10v2f-gr vr + 1jmxr)w-l 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 needr6*(0er:v kgsz /eo4 u zrliw1ed to have 50 W of capacitive reactance 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
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 120,f p4e.13on, mwnjkd n,y* gwl0 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 jkd42, l hd01j,lovf dthe capacitive reactance of a 0.010-mF capacitor be 100 Wd o2h0,f1j,dvk llj 4d?

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 qzdnup3) e.c* 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 serieihu+/ jw a0,ud9 gcnvzf1k.srb.;o u. s circuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance1 . .d0/ ;+onu.fugzukjc h,9r iabwvs?

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 im o ccw u-d4517 k+2ncilbpkzc3pedance at 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capacitor are conne c-cn ockk71cw5u2+l 43iz dbpcted in series?

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
117#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle w1 q +xn/2bxpsat 1500 Hz if a 100-W resistor, 20-mH coil, and 1.0-mF capanx1b x2pq/s w+citor are 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 ija 4uo,;7 oae po:e6bqs connected in series with a 20-mH inductor, what is the impedancooe:bo6ja,4 pe;aq7u e at 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 conne iv)whit k-5x(w+s.kl;xtn/zcted in series with a 20-mH inductor, what is the p z kkxh5(t iwln wxti);+/.sv-hase 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 :e6ra r cydbqh, d/+w3c1rd78 h 6mxcmcoil and 1.0-mF capacitor for a total impedance of 100 W at 15rm8:+dd 76r erwd 61/cxybq,mah3cch00 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.kyh+ v/w7ri ay ;ia)q 100-W resistor and 15-mH coil to get a;i wk/rv7i)yha .+yqa 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 5000 Hz for a -wm,e k-pa r3yntk .k0total impedance we-a. k0y- nr,ktkm 3pof 40000 W?

参考答案:    
标记此题
123#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What inductance must be put in series with a 100-kW rew+t sqy7nw*4- tu-f/0l ix axlsistor at 1.0-MHz for a total impedance of 15 -lnt 4+tyauwf7x l x*wsi-/0q0 kW?

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
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 20bs7k++ ov+ czups/qm4ji0:e g -mF capacitor. What is the impedueo gb:zsj+40k7/ q vc+ispm+ ance 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 kHz -uww8d-f-mvu):ea d q for a total impedance of 45a fwddq :e-wv) -um8-u 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 v4jo 7 /sctcjdgs10c uoe 4t44;yd/oa phase angle o4s0t/4ajdj;c4tco7 uy 4d1s ovo e/gcf $40^{\circ}$?

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 w0 yl gxh/jl91un6pv4at 1.0 kHz for a totaljv/y9hxu p1n0 6g wl4l impedance 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 at 120 .pg 28.pbva co3:av hyHz. What is the phase angle?8.pa.hovc :gayp32 bv

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 10lvu.,c- x5b qs i5(svm0-W resistor, 20-mH coil, and 1.0-mF capacitor are connected in seriesu, xvcivl 5s(.-s5mbq ?

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 capacitor, and a 0.ab4ds 2cr 1vmz.u)sc/bqir 28350-H inductor. The circuit is concu4 bqbcm r 8.rsi/vd212 s)aznected to a 120-V, 60-Hz power supply. What is the rms current in the circuit?

参考答案:    
标记此题
131#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A resistance of 55 W, a capacitorbyy x n6wrp7ry* 2 hlzl+(ge+: l23xra of capacitive reactance 30 W, and an inductor of inductive reactance 30 W are connected in series rr3 2gp :alyr7x(*yxey+ 2nl b6lzhw+to a 110-V, 60-Hz power source. What current flows in this circuit?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
132#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the phase angle for a series RLC circuit containin /tvyk*.reuhs1 8/rjwg a 50-W resistor, a 10-mF capacitor, and a 0.45kj /*/ swu .8hryvte1r-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 resistor for iu nny:/t -pqk p2+-hta phase angle ofnn p /+hykit2-u-q :tp $40^{\circ}$ at 10 kHz?

参考答案:    
本习题练习全部题目来源于题库网 (https://tiku.one)，学生可自助刷题练习，扫右侧二维码加微信，获取学习资料，答疑辅导
教师可以抽题组卷或一键复制他人试卷，布置为在线考试或在线作业，全自动判分成绩一键排序导出，省时省力
标记此题
134#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A series RLC circuit has R = 20.0 W, L = dfhx7fdy 9 xa+.287.q ulac5d zr-ujj 200-mH, C = 10.0 mF. At what frequency should the circuit be driven in order t8yar d.xlj7qhud.7- 2f xj9 u+azcf5do 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 ciw+oz(wci 4wk -.jx/ 4zhi6 lnyrcuit with 12.0 W resistance, 15.0 W inductive reactance, and 10.0 W capacitive reactance, when the circuit is connected to a 120-V power supply+on ijkc4xzwww zi6y/ .(h-4l?

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 ans,f/d9ki4a( qnxe7hg+4b ckl AC circuit is $63^{\circ}$. What is the power factor?

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
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 resis:eh k :u- -gf5yh,ebnstance of 30 W. What is th5nuey:h: sfe,- gkb- he power factor?

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
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 cir1x2z3ogqh c.-mai lh8cuit containing a 50-W resistor, a 10-mF capacitor, and chzi h 1 xoag3l8q-2m.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 fkcc6,6 knv.c9rrta :tn4e f)u3, vckxrequency of a 1.0-mF capacitor and a 15-mH coil in series?,k kenc6:vu3a,k9c c r) v fn.c6ttrx4

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 neeca 4wmlr ( t/le,qbs2)s6t8qsded in series with a 4.7-mF capacitor for a resonant frequency of 10 kqwclt (8 q4b/s)tes2ma 6 slr,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
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 a resona,oc dm1) en4 qjht+(eint frequencc)h,nojmdq+1ee(t i 4y of 1000 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 a 30-Wof pr7 eh/-joghj(y0a v:0yi2 resistor and a 40-mH coil if the resonant frequency of the circuit is to by0(jo /jgv hh7ya:eopif0 2-re 1000 Hz?

参考答案:    
  • :
    •
    总分:142分 及格:85.2分 时间:不限时
    未答题: 已答题:0 答错题:
    当前第 题，此次习题练习共有 142 道题
    本系统支持习题练习，作业与考试三大模式，作业考试自动评分，成绩排序一键导出，可设定动态变量同一试卷千人千题
    如果您对本系统感兴趣，想加入我们或者想进行任何形式的合作，请加微信 skysky1258

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

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

    GMT+8, 2025-4-4 06:45 , Processed in 0.793782 second(s), 306 queries , Redis On.