Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Physics Expert

problem 1: State with reasons whether the given statements are true or false:

a) The problem posed by large antenna size in case of audio communication can be solved by the amplification process.

b) 20 dB-Hz bandwidth corresponds to 1000 Hz.

c) The load impedance of an open ended transmission line is less than 400?.

d) The AM and FM demodulators are in essence the same except for their frequency bandwidth.

e) FDM and WDM are in essence the same.

f) The only benefit of satellite radio transmission is its digital signal handling capacity.

g) H-plane T structure can be employed for summing two signals.

h) The best method of joining two optical fiber is soldering.

i) Memory in a computer is a peripheral device.

j) At present there are only seven generic top-level domains names in use.

problem 2:

a) Hindi language has around 50 alphabets (10 vowels and 40 consonants). Show that the effectiveness of a binary coding system used to represent them is more than that used for coding the English language alphabets.

b) An analog triangular 1 KHz signal is sampled at 8 kbps. Draw the essential circuit and the output waveform (with timescale), if peak signal amplitude is 4mV.

problem 3:

a) An electromagnetic wave is illustrated as:

896_electromagnetic wave.jpg

Find out the phase vector, wavelength, phase velocity and time average Poynting vector.

b) Describe, how a transmission line segment can be employed as a filter.

problem 4:

a) What do you mean by the term varactor diode? How can it be employed in a frequency modulator circuit?

b) Which kind of shift keying method is used in two tone modulation for code transmission? How is it advantageous than the other kind of keying?

problem 5:

a) Describe the working of electronic exchange with the help of a block diagram.

b) What do you mean by the term CDMA? Describe how same radio frequency can be employed by multiple users in this case.

problem 6:

a) In a radio transmitter an antenna of 100? load resistance is to be joined to a power output phase. The supply voltage is 20V. Design a matching circuit (L-network) to deliver 5W RF power output at 25 MHz.

b) Compare the analog and digital television.

problem 7:

a) Describe the construction of a tunnel diode used in microwave circuits. Why is it essential to have heavy doping?

b) Compare the strategies employed for data compression in communication networks.

problem 8:

a) prepare the step-wise instructions to add the numbers stored at memory locations A and B, then subtract the number stored at C from this result and store the answer in memory location D.

b) Compare the various network topologies on the basis of their ruggedness, complexity and cost.

problem 9:

a) Justify the requirement of standard network protocols. Compare the OSI with TCP/IP reference models.

b) Describe, how the Bluetooth connects various devices. How is the interference between the devices prevented?

Physics, Academics

  • Category:- Physics
  • Reference No.:- M92534
  • Price:- $70

Priced at Now at $70, Verified Solution

Have any Question? 


Related Questions in Physics

Show that low-density generator-matrix codes are bad a

Show that low-density generator-matrix codes are bad. A family of low-density generator-matrix codes is defined by two parameters j, k, which are the column weight and row weight of all rows and columns respectively of G ...

1 state why it is reasonable to assume that a reactor is

1. State why it is reasonable to assume that a reactor is infinite when developing neutron transport equations, even though no reactor is truly infinite. 2. Discuss reactivity and two factors that affect it.

One of the challenges of decision theory is figuring out

One of the challenges of decision theory is figuring out exactly what the utility function is. The utility of money, for example, is notoriously nonlinear for most people In fact, the behaviour of many people cannot be c ...

An automobile mirror shows an image of truck located 10m

An automobile mirror shows an image of truck located 10m from mirror. The focal length of the mirrors is - 0.60m. Find the magnification and the position of the image of the truck

When the student flicks a 100 g marble its position vector

When the student flicks a 10.0 g marble, its position vector is as follows r(t) = (0.2 m/s³) t³ - (0.1 m/s) t. Find its momentum as a function of time. What is the momentum and net force acting on the marble at t = 3 sec ...

The planet saturn has a satellite calypso which travels in

The planet Saturn has a satellite, Calypso, which travels in an orbit of radius 2.950×108 m with a period of 1.89 days. Calculate the mass of Saturn from this information.

Poiseuilles law gives the rate of flow r of a gas through a

Poiseuille's Law gives the rate of flow, R, of a gas through a cylindrical pipe in terms of the radius of the pipe, r, for a fixed drop in pressure between the two ends of the pipe. (a) Find a formula for Poiseuille's La ...

Since the 1950s the carbon dioxide concentration in the air

Since the 1950s, the carbon dioxide concentration in the air has been recorded at the Mauna Loa Observatory in Hawaii.4 A graph of this data is called the Keeling Curve, after Charles Keeling, who started recording the d ...

Compare the expected message length when an ascii file is

Compare the expected message length when an ASCII file is compressed by the following three methods. Huffman-with-header. Read the whole file, find the empirical frequency of each symbol, construct a Huffman code for tho ...

Si gaas and cds crystals are exposed to a yellow light of

Si, GaAs and CdS crystals are exposed to a yellow light of wavelength 5500A and intensity 10 12  photons/cm 2 -sec. Verify that the photon energy Is 2.25eV. How many electron-hole pairs are generated per unit volume per ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen