Hnh 1

12

i1 i2

4 A 6

4

3

10

Hnh 2

0,1 F

+

_

i(t)

10

+

_

10

20 V

e(t)

Hnh 3

+

_

e(t)

5

0,1u1

u1+ -

Z

10 mH 1:2* *

a

b

+_

+_

+_

W

A

Eb.

Ea.

Ec.

Hnh 4

-j20

** 20

j20 ON

-j2

2 1

U1. U2

.

I1.

I2.

+

-

+

-

Hnh 5

+

-

0,5U1.

1

1'

2

2'

E THI MON MACH IEN I Lan th II Lp BK04HTD (Thi gian thi : 90 phut Khong ke chep e) (Thi ngay 11 / 4 /06)

-------------------------

Bai 1: Cho mach ien nh tren hnh 1 , xac nh : a) Cac dong ien i1 va i2 ? b) Cong suat phat cua nguon dong trong mach ?

Bai 2: Cho mach ien nh hnh 2, biet e(t) = 10cos(t) V,

Tm dong ien i(t) ? Bai 3: Cho mach nh tren hnh 3, biet e(t) = 10cos(103t) V, Dung s o tng ng Thevenin, tm tr khang Z e no nhan cong suat cc ai ? Xac nh gia tr Pmax o ? Bai 4: Cho mach ba pha nh hnh 4 , biet : Nguon ba pha oi xng th t thuan co ien ap day hieu dung Ud = 380 (V) . Tm ch so cua amper ke va watt ke ? Bai 5: Cho mang hai ca nh tren hnh 5 : a) Tm cac ma tran trang thai Y ?

b) Tm ham truyen at ap 2

1

uUKU

= khi ca 2-2 c noi

vi ien tr 1 ? Gia tr |Ku| tnh theo dB la bao nhieu ? --------------------------------

Sinh vien khong c s dung tai lieu. Can bo coi thi khong giai thch e thi .