What are the values of Emax and Emin displayed on the oscilloscope, when a 1 kV

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Question
What are the values of E_max and E_min displayed on the oscilloscope, when a 1 kV P-P carries is modulated to 50%?
Options
A. 2 kV, 0.5 kV
B. 1 kV, 0.5 kV
C. 0.75 kV, 0.25 kV
D. 0.5 kV, 1.5 kV

Correct Answer

0.75 kV, 0.25 kV

Explanation

What are the values of Emax and Emin displayed on the oscilloscope, when a 1 kV P-P carries is modul

E_max - E_min = 0.5 x 1 kV = 0.5 kV

2E_max = 1.5 kVi, E_max = 0.75 kV

E_min = 0.25 kV.

Exam Questions Papers problems

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2. A TV picture is to be transmitted over a channel of 6 MHz bandwidth at a 35 dB S/N ratio. The capacity of the channel is
Options
A. 50 Mbps
B. 100 Mbps
C. 36 Mbps
D. 72 Mbps

3. The amplitude of a pair of composite sinusoidal signal y(n) = x₁(n) + x₂(n) with x₁(n) = sin (5pn) x₂(n) = 3 sin (5pn) is __________ .
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A. 2
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5. In the circuit below, delay of the EXOR and AND

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A. - 2 V
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7. Suppose that the modulating signal is m(t) = 2cos (2pf_mt) and the carrier signal is x_C(t) = A_C cos(2pf_ct), which one of the following is a conventional AM signal without over modulation?
Options
A. x(t) = A_cm(t)cos(2pf_ct)
B. x(t) = A_c [1 + m(t)]cos (2pf_ct)
C.
D. x(t) = A_ccos(2pf_mt)cos(2pf_ct) + A_csin(2pf_mt)sin(2pf_ct)

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Options
A. 8.6 x 10¹¹/cm², p-type
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Options
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