Modulation is the process of: a. converting a digital signal to analog. b. altering the amplitude of a carrier wave. c. altering the frequency of a carrier wave. d. converting an analog signal to digital.
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Modulation is the process of:
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- In FM modulation , the number of side bands produced depends on frequency deviation and carrier frequency. Select one: O True O FalseQ: Analog-to-analog conversion, or analog modulation, is the representation of analog information by an analog signal. Then why we need to modulate an analog signal; when it is already analog?A form of modulation In which the amplitude of a carrier wave is varied in accordance with some characteristic of the modulating signal, is known as a. Aloha b. modem c. Angle modulation d. Amplitude modulation
- 2. What is the bandwidth of a signal that can be decomposed into five sine waves with frequencies at 10, 20, 50, 100, and 200 Hz? All peak amplitudes are the same. Draw the bandwidth. (1M)This is an encoding technique which has three voltage levels namely +, - and 0 a. Polar Encoding b. Unipolar Encoding c. NRZ Encoding d. Bipolar EncodingThe signal is modulated in which stage: O a. Channel O b. Transmitter O c. Receiver
- The power in FM signals is constantError detection and error correction coding techniques can be applied to analog signals to minimize the effects of noise. Select one: O True O FalseIn the field of information technology, pulse code modulation is a technique used by codes to convert an analog signal into a digital bit stream.
- 172. Find the bandwidth for the AM if we need to modulate a 5-KHz voice a. 10 KHz b. 20 KHz c. 30 KHz d. 40 KHz259. The relationship between data rate and signal rate depends on the value of a. data rate (N) b. case factor (c) c. ratio ( r ) d. signal element(s)2. A percentage of modulation greater than A. 10% B. 25% C. 50% D. 100%