Questions 1-What is meant by index profile? 2-What is the drawback of multimode fibres? 3-What is fibre optics ?

Q: Question 1: What problems occur in analog transmission with optical waveguides

A: A physical structure that channels electromagnetic waves in the optical spectrum is known as an…

Q: 3.1 The mean optical power launched into an optical fiber link is 1.5 mW and the fiber has an…

A:

Q: How many transmission channels are required for full duplex?

A: Full duplex mode requires two independent channels. One channel is for receiving the data and the…

Q: if an eight-level encoding scheme is used in a 30-kHz bandwidth system, what is the channel capacity…

A: The solution is given below

Q: Transmission parameters=?

A: The transmission parameter can be calculated by open circuit output side and short circuit the…

Q: A conventional telephone line with 3 kHz bandwidth and having 30 dB signal to noise ratio can carry…

A: Information rate or bit rate is calculated based on Shannon channel capacity theorem.  According to…

Q: layman's term, explain super heterodyne receiver.

A: The explanation is as follows.

Q: Explain difference between SNR and BER. Subject is Communication system

A:

Q: Q7) What are the orbital characteristics of GPS satellites? Q8) What is the full form of PRN code?

A: The orbital characteristics of GPS satellites are: There are a total of 24 satellites which rotates…

Q: (a) Several guided transmission media are in the form of conductor that provides a conduit where the…

A: The two types of guided transmission lines are 1) Waveguide (TE and TM modes) TE mode stands for…

Q: Q1) What are the obstacles to sending in optical fiber ?

A: The answer as given below:

Q: SRAM uses RAS and CAS control lines.  True  False

A: The statement is false because the DRAM is associated with RAS and CAS and both help in refreshing…

Q: What is the advantage of optical communication system over low frequency radio communication system?

A: Optical communication systems are very important for all types of telecommunications and networks.…

Q: In data transmission, both periodic analogue signals and non-periodic digital signals are used. Why

A: In this question we will write why in data transmission , both periodic and non periodic signal is…

Q: We know that P(transmitting a 0) = P(transmitting a 1). (a) Give the block diagram of the optimal…

A: Given the binary signalling scheme using the following two waveforms: a) We need to give the block…

Q: State two advantage of microwave communication over satellite communication.

A: With the use of high modulation, selective receivers, (QAM, PSK, SSB etc.) and spread spectrum…

Q: Give your reflection on the importance of radio transmitter in electronic communications systems in…

A: Radio transmitter used in telecommunication to generate a radio wave to transmit and send data with…

Q: a) Draw the neat labeled diagram of a 10Base5 ethernet cable? b) Write any 4 advantages of coaxial…

A: Diagram of 10Base5 ethernet cable

Q: Assume that there are N stations. Stations transmit without sensing the channel. Under what…

A: the transmission techniques used for transmission of data from multiple station is called multiple…

Q: Q1) What are the more effective operating wavelength in fiber optic communication system? Q2) Write…

A:

Q: A conventional telephone line with 3 kHz bandwidth and having 30 dB signal to noise ratios can carry…

A: Given, Bandwidth, B= 3 kHz Signal to noise ratios, S/N= 30 dB…

Q: c) What is the most important parameter that needs to be very accurate during optical fibre…

A: According to the question, we need to discuss about the most important parameter that needs to be…

Q: The ______________ performs the mathematical multiplication of the carrier and information signal. O…

A: We need to select correct option for given statement

Q: 16.a. Which cable specification should you check before burying an outdoor fiber optic cable? A.…

A:

Q: 1. In a parallel communication, each bit requires a transmitter and receiver. a) True b) False 2.…

A: Note :- As per guidelines we are supposed to answer only 3 questions. So I request you to please…

Q: State two advantages of microwave communication over fiber communication.

A: In microwave communication, microwave equipment can be re-located and removed in different areas if…

Q: 3-24 A recorded data signal of one hour duration has an esti- mated bandwidth of 50 kHz. It is to be…

A: Given that Time duration =1hrs=60minestimate bandwidth=50kHzavailable bandwidth=750kHz

Q: design 4*16 from 3*8 decoder ?

A:

Q: A network operator has asked you to design a point-to-point optical link for short reach (2 km)…

A: GIVEN data:

Q: If the Far end cross talk rating of a cable is 25.3 dB at a given frequency and the attenuation of…

A: Far end crosstalk (FEXT)FEXT measures the interference between two pairs of a cable at the far end…

Q: Why FT-IR instrumentation is superior  over IR instrumentation?  Please shortly answer at your own

A: The explanation is as follows.

Q: Which statement about satellites is correct? (multiple choice questions) A. Passive satellites…

A: Geostationary satellite moves with earth rotation. They are stationary with respect to earth. Form…

Q: a)Draw the block diagram of communication system with all details from microphone to the antenna?…

A: 1. we have to draw block diagram that shows different stages of communication system. 2. types of…

Q: Why modulation is necessary in communication system? Explain with at least three advantages of the…

A: The explanation is as follows.

Q: Explain which is more safer in aircraft operation GPS OR differential GPS

A: Difference between GPS and DGPS: GPS DGPS Full form of GPS is Global Positioning System. Full…

Q: 2. What are the differences between homodyne and super heterodyne receivers.

A:

Q: What did mean the term analog communications? a- A method in which one of the properties of a…

A: Analog communication is a means to transfer data through channels or computers for long and short…

Q: If the Far end cross talk rating of a cable is 13.3 dB at a given frequency and the attenuation of…

A: Far end crosstalk (FEXT) FEXT measures the interference between two pairs of a cable at the far end…

Q: 3. What are the differences between homodyne and super heterodyne receivers

A: differences between homo-dyne and super heterodyne receivers?

Q: Draw the block diagram of optical fiber communication system

A: The three elements of optical fibre communication are as follows- (1) Transmitter- it consists of…

Q: A.a.Two electricians are discussing industrial cabling. Electrician A says that copper cable…

A: The power system has to transmit power from the generation side to the load side. For this purpose,…

Q: network operator has asked you to design a point-to-point optical link for short reach (2 km)…

A:

Q: why we use 1550 nm in fiber communication * Your answer what is the figure of merit for the optical…

A:

Q: For a communication link what are the different forms of modulation?

A: Given :    Modulation is a method which is used in the communication system for the following…

Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors.  The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.