Question 17 In amplitude modulation, bandwidth is.. A Twice B) Three times Four times (D) None of the above ............the audio signal frequency Question 18 Which of the following schemes consumes more power: A Unipolar NRZ B) Polar NRZ C) Differential Manchester D AMI G Question 19 Increasing the frequency of an analog signal leads to A An increase in the wavelength of the signal (B) An decrease in the wavelength of the signal C A decrease in the number of cycles per second (D) An increase in the period of each cycle of the signal