Question

14. Numerical value of 4€, is :
1
(a) 9 x 109
(6)
9 x 109
(c)1
(d) some other value.​

Answer 1

Step-by-step explanation:

1/4€=9x10*9 OK friend this is urs answer

Answer 2

Answer:

SOLUTIONS

1. Resonant frequency fr = 1/2rrv(LC) = 1126 kHz.

Q = w,L/R = 2rrfrL/R = 177.

Impedance Z = R + j I wL - _1_) = R [1 + j (WL __ 1_)~. \' wC R wCR~

:. the angle rp and magnitude IZI of Z are given by:

tan rp = [': - w~RJ and IZI = Rv(1 + tan2 rp),

i.e. ( w Wr) tanrp=Q --- . Wr W

( W)2 _ tan rp(W )_ 1 = 0

wr Q wr

W tan rp J[ (tan rp)] and Wr = 2 Q + 1 + 2 Q ; since at resonance W = Wr and tan rp

= 0, and only the positive sign has meaning. At the upper half-power fre-

quency W = Wl, tan rp = 1.

:= 21Q + J~ + 4~21 At the lower half-power frequency W = W2, tan rp = - 1.

:: = - 2~ + J [1 + 4~l Wl

In this case, Q = 177, sofi = - = 1129 kHz

2rr

and W2 12 = -= 1122 kHz.

2rr

2. [max = 344 rnA so [max/V(2) = 243 rnA.

Bandwidth at [max/V(2) = 16 kHz.

:. Q = frI(16 X 103) = 884 X 103/(16 X 103) = SS.2