NEET UG PHYSICS MCQ: COMMUNICATION SYSTEMS

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In a radio receiver, the short wave and medium wave stations are tuned by using the same capacitor but coils of different inductance

{L_s}

and

{L_m}

respectively then

View answer and explanation

Correct option: B

{L_s} < {L_m}

Option B (

{L_s} < {L_m}

) is correct because for the same capacitor, a lower inductance is required for tuning to higher frequencies (short waves) and a higher inductance is required for tuning to lower frequencies (medium waves).

More Questions from COMMUNICATION SYSTEMS

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

\left( {{m_a}} \right)

in terms of

{{\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?