Exam Questions Papers - Exam Paper 1 (5)

E_max - E_min = 0.5 x 1 kV = 0.5 kV

2E_max = 1.5 kVi, E_max = 0.75 kV

f₁(A, B, C, D) = ∑(6, 7, 13, 14)

f₂(A, B, C, D) = ∑(3, 6, 7)

f₁ ⊕ f₂ = ∑(3, 13, 14)

f₃ x (f₁ ⊕ f₂) = ∑(14) = y

X = f₁ x y ⇒ ∑14.

2^{n - 1} R = 32 K&Omeg;

n = 4

⇒ 8R = 32

R = 4 KΩ.

A_C cos ω_ct + 2 cos ω_mt cos ω_ct

A_C cosω_ct 

for envelope detection μ < 1 ⇒ < 1 ⇒ Ac should be at least-2.

s = x² - e^x

Since autocorrelation function and power spectral density bears a Fourier transform relation, then since required in frequency domain will five rectangular convolutions in time domain thus it is triangular function.

Efficiency of antenna 

Power gain = 10

Thus directivity