The device which superimposes information onto a highfrequen

The device which superimposes information onto a high-frequency signal for transmission is called: a demodulator the carrier a modulator the intelligence The two types of angle modulation are: amplitude and frequency modulation phase and frequency modulation pulse and frequency modulation phase and amplitude modulation In an FM modulator, the amplitude of the intelligence signal determines the: rate of the carrier frequency deviation. power level of the FM signal. phase angle of the carrier frequency component. amount of carrier frequency deviation. Overmodulation: results when the modulation index exceeds unity is undesirable because it produces sideband splatter causes the AM signal to become distorted so that the receiver cannot produce a clean replica of the original intelligence signal all of the above Which of the following is an advantage of transmitting in a digital format? less sensitive to noise less crosstalk lower distortion levels all of the above

Solution

a)modulator

b)phase and frequency modulation

c)rate of the carrier frequency deviation

d)results when the modulation index exceeds unity i.e,kpA_M>>1

e)all of the above