What are the types of signal degradations that may be encountered in transmission over the channel ?
Q: 3. Determine i1, i, iz and i4. сло iz 2A D+ ЗА Odis Пина 13
A: To calculate currents i1, i2, i3 and i4
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A: The given problem is from circuits. The detailed solution is given in the next step
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A: The problem on phasor is solved below. These problems are basic of electrical circuit.
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- 7- When does over-modulation occur? a) Modulating signal voltage carrier voltage c) Modulating signal voltage = carrier voltage d) Modulating signal voltage = 0What is the problem with AM signal when overmodulation occurs?The term that refers to loss of strength of a signal is called a. attenuation b. distortion c. Noise d. Impairments
- Answer the following. Use a detailed explanation. In series clippers, when clipping of signal occurs? In parallel clippers, when clipping of signal occurs? What happens to the depletion region if the connection is in reverse bias?Define carrier signal and explain its role in analog transmission?What is the importance of the modulation percentage in an AM system, does it have to do with over modulation, does it have to do with distortion?
- What is the main feature in AM modulation , that is used to judge if the modulation is good or not ? Explain with examples .What is equation of the demodulator? advantages and disadvantages of DSB-SC over DSB-AM?How to calculate the efficiency in frequency modulation and what is the highest value for efficiency in frequency modulation
- Which of the following is not an effect caused by multipath in radio channel? a) Rapid changes in signal strength b) Random frequency modulation c) Power of base station d) Time dispersionA major advantage of PRTs is that they are very linear. A disadvantage is that they have poor sensitivity. True or false?Q4: the modulation index of the modulated sound signal of 0.5, while the maximum voltage of this signal is 12 volts. the modulated waveform was affected by 30 ohm as an impedance to pass through this system, let the modulating and carrier frequencies are 200 and 4KHZ respectively. calculate 1- the transmitted and modulated power of this signal. 2- the efficiency of this system 3- write the mathematical model of input and output signals with its real values. 4- draw the waveform of the modulated * signal