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) Parallel communication system is favored for video signal transmission.

b) Adding redundant bit in a transmitted signal makes sure error free communication.

c) Characteristic impedance of a transmission line based on its geometry.

d) Bandwidth of frequency modulated (FM) signal is narrower than that of amplitude modulated (AM) signal.

e) In telephony, pulse tone dialing is more proficient than Dual Tone Multi-frequency (DTMF) dialing.

f) Double spotting consequence is not observed in the case of TRF receivers.

g) Schottky barrier diode can work at higher frequency than the p-n junction diode.

h) Quantum efficiency of a photo detector doesn’t depend on the wavelength of the radiation being detected.

i) Instruction written in Assembly Language can be directly executed by the computer processor.

j) P2P networking facilitates the collaborative computation projects.

problem 2:

a) State and prove with the help of suitable diagram the sampling theorem.

b) A computer key board has 108 keys. Supposing equal probability of any key pressing compute the information content, I, carried by each key. Prove that this information is more than the information taken by the keys on the key pad of a touch tone telephone.

problem 3:

a) For a metallic conductor with ν = 1012 collisions per second the skin depth at ω = 2π x 1010 rad frequency is 4.0 µm. Compute the plasma frequency of this conductor.

b) Compare the two wire transmission line with coaxial cable on the basis of operating frequency, losses and cost.

problem 4:

a) Describe the distortions encountered in case of amplitude modulated signal. Which of such can be removed in amplitude shift keying? How?

b) Describe the process of obtaining pulse position modulated signal from pulse amplitude modulated signal.

problem 5:

a) Design a TDM system to interlace three PAM audio signals.

b) Describe with an illustration the working of time division switching in telephony.

problem 6:

a) Describe the working of automatic gain control circuit in an AM receiver.

b) With the help of a suitable diagram describe the process of collecting the image information in serial form from a charge coupled device.

problem 7:

a) Describe different kinds of microwave horn antennae on the basis of their construction, directivity and applications.

b) Compare the various kinds of optical fibers on the basis of their construction. Describe how the modal dispersion is avoided in case of graded index fiber.

problem 8:

a) Trace the evolution of computers from micro to super computers.

b) Describe the Ethernet and Token Ring LAN protocols. How is data collision avoided in case of token ring protocol?

problem 9:

a) Describe the merits and demerits of different datagram switching methods.

b) What do you mean by the term WAP? What are the challenges faced in designing the WAP applications?

Physics, Academics

  • Category:- Physics
  • Reference No.:- M92536
  • Price:- $70

Priced at Now at $70, Verified Solution

Have any Question? 


Related Questions in Physics

If the a1n-si schottky barrier contact shown in given

If the A1/n-Si Schottky barrier contact shown in given Figure was used as the ohmic contact to the n-Si surface of the 1957SNS p+/n diode, how would the forward I-V characteristics look? Sketch it both on linear-linear a ...

1 the electron affinity to an isolated neutral si atom is

1. The electron affinity to an isolated neutral Si atom is 1.39eV while to a neutral Si crystal it is 4.02eV. Why is it larger in S i crystal? Give a simple explanation based on electrostatic or Coulomb force. 2. Draw th ...

In new england the horizontal component of the earths

In New England, the horizontal component of the Earth's magnetic field has a magnitude of2.8 × 10 -5 T. An electron is shot vertically straight up from the ground with a speed of4.0 × 10 6 m/s.What is the magnitude of th ...

A nanoparticle containing 6 atoms can be modeled

A nanoparticle containing 6 atoms can be modeled approximately as an Einstein solid of 18 independent oscillators. The evenly spaced energy levels of each oscillator are 4e-21 J apart. Use k = 1.4e-23 J/K. (a) When the n ...

Calculate the macroscopic thermal neutron absorption cross

Calculate the macroscopic thermal neutron absorption cross section for natural uranium. (ignore the trace amounts of234U; the a/o of235U in natural uranium is .72, and the a/o of the238U is .9928) Calculate the macroscop ...

This and the next problem summarize the equation and

This and the next problem summarize the equation and methodology used by physicists to calculate N DD , N AA , E D  and g D  in a semiconductor from a set of N versus T data from very low temperatures to above T i . Usin ...

During the hypothetical contact transient of the three

During the hypothetical contact transient of the three layers of the four MOS structures in problem below, are electrons transferred from the gate conductor to the Si or vice versa? Explain the detailed sequence in the s ...

A rock of 130 kg is found at the top of a mountain that is

A rock of 130 kg is found at the top of a mountain that is 1140-m high. Find the potential energy with respect to the bottom of the mountain (g = 9.8 m/s 2 ).

Questionyoure driving down a highway and you decide to

Question: You're driving down a highway, and you decide to accelerate flaunting the speed limit, you accelerate way up there. At one point, you're going (a) 100km/hr. Later, you're going (b) 0.25 times the speed of light ...

The birthday problem may be related to a coding scheme

The birthday problem may be related to a coding scheme. Assume we wish to convey a message to an outsider identifying one of the twenty-four people. We could simply communicate a number s from A S = {1, 2, . . . , 24}, h ...

  • 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