The Semiconductor and Communication Systems 1 category groups practice questions that focus on the basic principles of semiconductors and introductory communication system topics. It helps learners review core concepts and test their understanding in a structured format.
Band of frequencies is correct per The communication system needed for a gi principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
PIV full-wave: 2*Vm=2*300√2≈848V, or Vm=300V if RMS 300V => 600V? Approx 600V.
Ref: NCERT Physics Class 12 Chapter 14 Semiconductor Electronics
Radio waves range few km to thousands km depending on frequency and power.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
Loss of signal strength called attenuation, due to absorption and scattering.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
Channel forms: guided wired and unguided wireless media.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
Sky wave propagation uses ionospheric reflection for long distance.
Ref: NCERT Physics Class 12 Chapter 14 Semiconductor Electronics
Broadcast mode example: radio, TV, one-to-many transmission.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
Superimposing information onto carrier called modulation.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
Carrier wave high frequency sinusoidal, c(t)=Ac sin(ωc t).
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
FM broadcast band 88-108 MHz, VHF, high fidelity.
Ref: NCERT Physics Class 12 Chapter 14 Semiconductor Electronics
Modulation required for long-distance transmission, antenna size, multiplexing.
Ref: NCERT Physics Class 12 Chapter 15 Communication Systems
Connecting inputs together makes NOR as NOT gate, NAND as NOT gate.
Ref: NCERT Physics Class 12 Chapter 14 Semiconductor Electronics
