In telegraphy we generally use __________(a) Amplitude modulation(b) Frequency modulation(c) Frequency Shift Keying(d) Pulse Code modulationI got this question in a job interview.I'm obligated to ask this question of Representation of SSB-SC in Time & Frequency Domain topic in division SSB Modulation of Analog Communications

In telegraphy we generally use __________(a) Amplitude modulation(b) F

1.	In telegraphy we generally use __________(a) Amplitude modulation(b) Frequency modulation(c) Frequency Shift Keying(d) Pulse Code modulationI got this question in a job interview.I'm obligated to ask this question of Representation of SSB-SC in Time & Frequency Domain topic in division SSB Modulation of Analog Communications
Answer» The correct option is (c) Frequency Shift Keying To ELABORATE: FSK (Frequency Shift Keying) is a method used to transmit binary data in FORM of digital signals. It is MAINLY used for telegraphy. In telegraphy, a modem is used to convert binary data to FSK and vice-versa, for the communication between COMPUTERS and over telephone lines.

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