Electronics and Communication Engineering - Exam Questions Papers
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Voltage reflection coefficient
Current reflection coefficient : ri = - rv = + 10.36 ∠111.296.

The given circuit can be compared to a Wheatstone's Bridge.
This bridge is balanced.
∴ Req = (10 + 10) || (20 + 20) = 20 || 40 = 13.33 Ω
∴ .
Y = P ⊕ Q ⊕ R, Z = RQ + P R + Q P

The circuit is a
Let P = 1101 Q = 1101
Yn = Pn ⊕ Qn ⊕ Rn
Z = Rn Qn + Pn Rn + Qn Pn
Constructing truth table
So that, Rn + 1 = Zn 1 ≥ n ≥ 3
Z4 = R5(MSB)
Hence, output is 00010 which show that it is a 4 bit subtractor giving P - Q.
Mass of moon = 6.7 x 1022 Kg
Mass of earth = 6 x 1024 Kg
Distance between moon and earth = 380 Km
Universal gravitational constant = 6.7 x 10-11 Nm2/Kg2
Using law of gravitations, the force between two point masses is F =
M1 = mass of moon = 6.7 x 1022 kg
M2 = mass of earth = 6 x 1024 kg
r = distance between masses = 380 km
G = universal gravitational constant
= 6.7 x 10- 11 Nm2/Kg2
Let Q1 and Q2 be the charge on moon and earth respectively. Now the gravitational force must be balanced by the force of repulsion.
Q1Q2 = 4pε0M1M2G
but Q2 = 12.5Q1
= 12.5 x 4pω0M1M2G
∴ Q2 = 6.11 x 1014
Q2 = 61.11 TC
Q1 = 4.89 TC.
a-k = a*k for all values of k.
In fact, this equality holds whenever x[n] is real.