Question
Write the function of a (i) Transducer and (ii) Repeater in a communication system.

Answer

  1. Transducer: The device which converts one form of energy into another.
  2. Repeater: A repeater picks up signal, amplifies and retransmits them to receiver.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Explain electric field due to system of charges.
Length of a metallic wire is 1 m and its area of cross-section is A square meters. If this wire is stretched to double its length, then by how much percent will its resistance increase?
Electrons are emitted from a photosensitive surface when it is illuminated by green light but electron emission does not take place by yellow light. Will the electrons be emitted when the surface is illuminated by (i) red light, and (ii) blue light?
Light of wavelength 560nm goes through a pinhole of diameter 0.20mm and falls on a wall at a distance of 2.00m. What will be the radius of the central bright spot formed on the wall?
Arrange the following electromagnetic waves in the order of their increasing wavelength :
a. $\gamma$-rays
b. Microwaves
c. X-rays
d. Radio waves
How are infra-red waves produced? What role does infra-red radiation play in
i. maintaining the Earth's warmth and
ii. physical therapy?
State the types of electric charge. Who coined these names?
Is the vector sum of the unit vectors $\vec{\text{i}}$ and $\vec{\text{j}}$ unit vector? If no, can you multiply this sum by a scalar number to get a unit vector?
Define the term ‘Half-life’ of a radioactive substance. Two different radioactive substances have half-lives T1 and T2 and number of undecayed atoms at an instant, N1 and N2, respectively. Find the ratio of their activities at that instant.
Using the curve for the binding energy per nucleon as a function of mass number A, state clearly how the release in energy in the processes of nuclear fission and nuclea fusion can be explained.
What physical quantity is the same for Χ-rays of wavelength 10-10m, red light of wavelength $6800\mathring{\text{A}}$ and radio waves of wavelength 500m?