Back to COMMUNICATION SYSTEMS

NEET UG PHYSICS MCQ: COMMUNICATION SYSTEMS

1 Easy

1 of 1

Application +4 | -1

The maximum and minimum voltage of an amplitude modulated signal are

60 \mathrm{~V}

and

20 \mathrm{~V}

respectively. The percentage modulation index will be:

View answer and explanation

Correct option: B

50 \%

Option B (50%) is correct because the percentage modulation index is calculated as ((Vmax - Vmin) / (Vmax + Vmin)) * 100.

More Questions from COMMUNICATION SYSTEMS

Practice All Chapter MCQs →

In the communication systems, AM is used for broadcasting because Depth of modulation

\left( {{m_a}} \right)

{{\text{E}}_{{\text{max}}}}\,{\text{and}}\,{{\text{E}}_{{\text{min}}}}

is The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as The antenna current of an AM transmitter is 8 A when only the carrier is sent, but it increases to 8.93 A when the carrier is modulated by single sine wave. Find the percentage modulation. An audio signal of amplitude one half the carrier amplitude is used in amplitude modulation. Calculate the modulation index? When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity

ie

, dielectric constant dielectric constant of the ionised layer