विषयों
अध्याय
विषयों
मुख्य विषय
अध्याय
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Physics
Define modulation and transducer
Chapter: [20] Communication Systems
Concept: Modulation and Its Necessity
Concept: Modulation and Its Necessity
The process of regaining of information from carrier wave at the receiver is called .................
(a) modulation
(b) transmission
(c) propagation
(d) demodulation
Chapter: [20] Communication Systems
Concept: Need for Modulation and Demodulation
Concept: Need for Modulation and Demodulation
Draw a neat, labeled diagram showing different layers of the Earth’s atmosphere.
Chapter: [20] Communication Systems
Concept: Production and Detection of an Amplitude Modulated Wave
Concept: Production and Detection of an Amplitude Modulated Wave
From earth's surface, ionospheric layer of atmosphere lies between ............
(a) 12 km to 50 km
(b) 50 km to 80 km
(c) 80 km to 400 km
(d) 400 km to 700 km
Chapter: [20] Communication Systems
Concept: Space Communication
Concept: Space Communication
Explain the need for modulation related to the size of antenna (aerial).
Chapter: [20] Communication Systems
Concept: Modulation and Its Necessity
Concept: Modulation and Its Necessity
