Q2. Write either (T) for True or (F) for False on the following: 1. The free running frequency of the LM565 FM demodulator circuit is set internally. 2. For an FM carrier signal of frequency of 90 MHz, the local oscillator superheterodyne receiver is set to 107 MHz. 3. For a carrier of 800 kHz, the output of the IF amplifier in AM receiver contains an image frequency of 1600 kHz. T 4. If the frequency band of the information signal extends to 10 kHz the upper limit of the output spectrum of the IF amplifier in AM receiver is 465 kHz. 5. The frequency range of the LM386 audio amplifier can extends to more than 15 kHz. 6. The voltage gain of the LM386 audio amplifier can be set to 120 dB by connecting a suitable resistor and capacitor between pins 1 and 8.
Quantization and Resolution
Quantization is a methodology of carrying out signal modulation by the process of mapping input values from an infinitely long set of continuous values to a smaller set of finite values. Quantization forms the basic algorithm for lossy compression algorithms and represents a given analog signal into digital signals. In other words, these algorithms form the base of an analog-to-digital converter. Devices that process the algorithm of quantization are known as a quantizer. These devices aid in rounding off (approximation) the errors of an input function called the quantized value.
Probability of Error
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