Choose the option which best relates with pulse modulation.

Amplitude and angular frequency remains constant.

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Digital transmission.

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Noise creeps in.

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Stereophonic transmission.

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Solution

The correct option is B Digital transmission.
A pulse is a discreet signal and thus any kind of pulse modulation (viz. PAM, PDM, PWM or PPM) falls under the category of digital transmission.

Suggest Corrections

a)Amplitude Modulation	e)Amplitude and Angular frequency remains constant
b)Frequency Modulation	f)Digital Transmission
c)Phase Modulation	g)Noise Creeps in
d) Pulse	h)Stereophonic Transmission