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Principles of Communication Engineering Compare Amplitude Modulation (AM) and Frequency Modulation (FM) in terms of bandwidth, power efficiency, and noise immunity.20247mPrinciples of Communication Engineering SSB modulation saves (i) Power (ii) Bandwidth (iii) Both power and bandwidth (iv) Only modulation index20252mPrinciples of Communication Engineering In FM, the parameter varied in proportion to the message signal is (i) Amplitude (ii) Frequency (iii) Phase only (iv) Amplitude and phase20252mPrinciples of Communication Engineering A frequency-modulated (FM) signal with a frequency deviation of 75 kHz and a modulating frequency of 5 kHz has a modulation index of: (i) 15 (ii) 50 (iii) 75 (iv) 10020242m