Overview of Plesiochronous Digital Hierarchy And of Synchronous Digital Hierarchy (PDH and SDH) With the introduction of PCM technology in the 1960s, communications networks were gradually converted to digital technology over the next few years. To cope with the demand Read more…
Category: Engineering Physics
What is the Attenuation? How many types of Dispersion? How many types of Fiber Buffering Loose? What is the Tube Buffering? ATTENUATION : loss of optical power Attenuation is defined as the loss of optical power over a set distance, Read more…
How many types of Fiber Optics? Types of Fiber Optics: The refractive Index profile describes the relation between the indices of the core and cladding. Two main relationship exists : (I) Step Index (II) Graded Index The step index fiber Read more…
What is the Fiber Optics Communication System? Fiber Optics: Optical Fiber is new medium, in which information (voice, Data or Video) is transmitted through a glass or plastic fiber, in the form of light, following the transmission sequence give below Read more…
What is the analog and digital communications? Draw the basic block diagram of transmitter and receivers. Answer: Analog and digital communication Analog communication : Analog communication is that types of communication in which the transmitted message or information signal is Read more…
Explain Nuclear Fission and Nuclear Fusion. Answer: Nuclear Fission and Nuclear Fusion: Isotopes: are atoms that have same atomic number (number of protons) but different mass numbers (numbers of neutrons) or both elements having the same atomic number. are isotopes (17 Protons and Read more…
What is the Semi Empirical Mass Formula? Answer: Semi Empirical Mass Formula V. Weizsäcker proposed an equation in terms of atomic mass of the nuclide and series of binding energy term in 1935. This equation is known as Semi Empirical Mass Read more…
What is the liquid drop model? Write Comparison and difference between Nucleus and Liquid Drop. Answer: Liquid Drop Model The liquid drop model is one of the models which explain the different properties of the nucleus. It was first proposed by Read more…
What is the Nuclear Force? Answer: Nuclear Force: An absorption or emission of nuclear energy occurs in nuclear reactions or radioactive decay; those that absorb energy are called endothermic reactions and those that release energy are exothermic reactions. The best-known classes Read more…