Mobile Computing Important questions IT6601

Mobile Computing Important questions IT6601 Regulation 2013 Anna University free download. IT6601 Important questions pdf free download Reg 2013.

Sample Mobile Computing Important questions:

1. Define Mobile Computing.

Mobile Computing also called as Ubiquitous Computing or Nomadic Computing is described as the ability to compute remotely while on the move. It makes possible for people to access information from anywhere and at any time. Mobile Computing = Mobility + Computing

2. What do you mean by the terms Mobility and Computing?

Mobility: Provides the capability to change location while communicating to invoke computing services at some remote computers. Computing: Capability to automatically carry out certain processing related to services
invocation on a remote computer.

3. Name the type of Mobility.

a) User Mobility
b) Device Portability

4. List out the advantages of Mobile Computing. May/June 2016

(i) Location Flexibility
(ii) User Mobility
(iii) Device Portability
(iv) Saves Time
(v) Enhanced Productivity
(vi) Entertainment

5. Mention the disadvantages of Mobile Computing.

(i) Expensive
(ii) Power Consumption
(iii) Small Screen Display
(iv) Slow Internet Speed
(v) Risky to carry
(vi) Security Concerns
(vii) Communication depends upon network

6. What are the classifications of Wireless Networks?

i) Extension of Wired Networks: Uses fixed infrastructures such as base stations to provide single hop wireless communication (or) two-hop wireless communication. a. Example: WLAN, Bluetooth
ii) Adhoc Networks: It does not use any fixed infrastructure and it is based on multi-hop wireless communication. Example: MANET, VANET.

7. What are the applications of mobile computing?

 Emergency services
 Stock Broker
 Vehicles
 For Estate Agents
 In courts
 In companies
 Stock Information Collection/Control
 Credit Card Verification
 Taxi/Truck Dispatch
 Electronic Mail/Paging

8. List out the characteristics of Mobile Computing.

(i) Ubiquity
(ii) Location Awareness
(iii)Adaptation
(iv)Broadcast
(v) Personalization

Subject Name	Mobile Computing
Subject code	IT6601
Regulation	2013

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Distributed Systems Important questions

Distributed Systems Important questions CS6601 Regulation 2013 Anna University free download. CS6601 Important questions free pdf download.

Sample Distributed Systems Important questions:

1. Define distributed systems?

A distributed system is a collection of independent computers that appears to its users as a single coherent system.
(Or)
A distributed system is one in which components located at networked computers communicate and coordinate their actions only by passing messages. This  definition leads to the following

characteristics of distributed systems:
 Concurrency of components
 Lack of a global ‘clock’
 Independent failures of components

2. Give examples of distributed systems.

 Intranet and Local Area Network
 Internet/World-Wide Web
 Mobile and Ubiquitous Computing
 Database Management System
 Automatic Teller Machine Network
 E-mail
 Newsgroups and bulletin boards
 FTP, Telnet
 W WW
 Distributed computing
 Electronic payment
 Distributed real-time processing

3. Write the following

(i)HTTP (ii) HTML (iii) URL
The Hypertext Transfer Protocol (HTTP) is an application protocol for distributed, collaborative, hypermedia information systems.[1] HTTP is the foundation of data communication for the Web. Hypertext is structured text that uses logical links (hyperlinks) between nodes containing text. HTTP is the protocol to exchange or transfer hypertext.

(ii) HTML is the standard markup language used to create web pages.[1]Web browsers can read HTML files and render them into visible or audible web pages. HTML describes the structure of a website semantically along with cues for presentation, making it a markup language, rather than a programming language

(iii) URL is an acronym for Uniform Resource Locator and is a reference (an address) to a resource on the Internet. A URL has two main components:

Subject Name	Distributed Systems
Subject code	CS6601
Regulation	2013

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Antenna and Wave propagation Important questions

Antenna and Wave propagation Important questions EC6602 Regulation 2013 Anna University free download. EC6602 Important questions free pdf download.

Sample Antenna and Wave propagation Important questions:

1.Define Sky wave.
Waves that arrive at the receiver after reflection in the ionosphere is called sky wave.

2.Define Tropospheric wave.
Waves that arrive at the receiver after reflection from the troposphere region is called
Tropospheric wave.(ie 10 Km from Earth surface).

3.Define Ground wave.
Waves propagated over other paths near the earth surface is called ground wave propagation.

4.What are the type of Ground wave.
Ground wave classified into two types.

i. Space wave
ii. Surface wave.

5. What is meant by Space Wave?
It is made up of direct wave and ground reflected wave. Also includes the portion of energy received as a result of diffraction around the earth surface and the reflection from the upper
atmosphere.

6. What is meant by Surface Wave?
 Wave that is guided along the earth‘ s surface like an EM wave is guided by a
transmission is called surface wave. Attenuation of this wave is directly affected by the
constant of earth along which it travels.

7. What is meant by fading?
Variation of signal strength occur on line of sight paths as a result of the atmospheric
conditions and it is called .It can not be predicted properly.

8. What are the type of fading?
Two types. i. Inverse bending.
ii. Multi path fading.

9. What is inverse and multi path fading?
Inverse bending may transform line of sight path into an obstructed one. Multi path fading is caused by interference between the direct and ground reflected waves as well as interference between two are more paths in the atmosphere.

Subject Name	Antenna and Wave propagation
Subject code	EC6602
Regulation	2013

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VLSI Design Important Questions EC6601

VLSI Design Important questions EC6601 Regulation 2013 Anna University free download. EC6601 Important questions pdf file download VLSI Design Important questions.

Sample VLSI Design Important questions:

1.What is Moore’s law?

Moore’s law states that the number of transistor would double every 18 months.

2.What is CMOS technology?

Complementary Metal Oxide Semiconductor (CMOS)in which both n-channel MOS and p-channel MOS are fabricated in the same IC.

3.What are the advantages of CMOS over NMOS technology ?

 In CMOS technology the aluminum gates of the transistor are replaced by poly silicon gate.
 The main advantage of CMOS over NMOS is low power consumption.
 In CMOS technology the device sizes can be easily scalable than NMOS.

4.What are the advantages of CMOS technology ?

 Low power consumption.
 High performance.
 Scalable threshold voltage.
 High noise margin.
 Low output drive current.

5.What are the disadvantages of CMOS technology ?

 Low resistance to produce deviations and temperature changes.
 Low switching speed at large values of capacitive loads.

6.What is design rule ?

Design rules are the communication link between the designer specifying requirements and the fabricator who materializes them. The design rule conform to a set of geometric constraints or rule specify the minimum allowable line widths for physical objects on-chip such as metal and poly silicon interconnects or diffusion area, minimum feature dimensions and minimum allowable separations between two layers.

Subject Name	VLSI Design
Subject code	EC6601
Regulation	2013

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Computer Architecture Important questions Syllabus CS6303

Computer Architecture Important questions CS6303 Regulation 2013 Anna University free download. CS6303 Important questions pdf free download.

Sample Computer Architecture Important questions:

1. What are the eight great ideas in computer architecture?

2. What are the five classic components of a computer?

3. What is the function of data path and control path?

4. What is instruction set Architecture?

5. Define application binary interface

6. Differentiate DRAM and SRAM.

7. Compare Volatile and nonvolatile memory.

8. List the advantages of Network Computer.

9. Define VLSI

10. Differentiate Throughput and Response Time

11. Write the CPU performance equation.

12. If computer A runs a program in 10 seconds, and computer B runs the same program
in 15 seconds, how much faster is A over B.

13. Write the formula for CPU execution time for a program

14. Write the formula for CPU clock cycles required for a program.

15. How will you measure the dynamic power dissipppation?

16. Define – Stored Program Concepts

17. What are the fields in an MIPS instruction?

18. List the advantages of multiprocessor over uniprocessor.

19. What are the different types ofoperands? Give examples

20. List the different addressing modes

PART-B

1. i)Discuss in detail about Eight great ideas of computer Architecture.(8)
ii) Explain in detail about Technologies for Building Processors and Memory (8)

2. Explain the various components of computer System with neat diagram (16)

3. Discuss in detail the various measures of performance of a computer(16)

4. Define Addressing mode and explain the basic addressing modes with an example foreach.

5. Explain operations and operands of computer Hardware in detail (16)

6. i)Discuss the Logical operations and control operations of computer (12)
ii)Write short notes on Power wall(6)

7. Consider three diff erent processors P1, P2, and P3 executing the same instruction set. P1 has a 3 GHz clock rate and a CPI of 1.5. P2 has a 2.5 GHz clock rate and a CPI of 1.0. P3 has a 4.0 GHz clock rate and has a CPI of 2.2.
a. Which processor has the highest performance expressed in instructions per second?
b. If the processors each execute a program in 10 seconds, find the number of cycles and the number of instructions.

Subject Name	Computer Architecture
Subject Code	CS6303
Regulation	2013

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EE6604 Important questions Design of Electrical Machines

EE6604 Important questions Design of Electrical Machines Regulation 2013 Anna University free download. Design of Electrical Machines Important questions free pdf download.

Sample EE6604 Important questions:

1. What are the types of electrical engineering materials?

Basically there are three types of materials used in electrical machines.
 Magnetic materials
 Conducting materials
 Insulating materials

2. What is meant by critical magnetic field?

If the temperature of a material is raised above its critical temperature its superconductivity
disappears. The field at which superconductivity vanishes is called critical magnetic field.

3. What is askarel?

An askarel is a synthetic non flammable insulating liquid. The commonest askarel is hexa choloro diphynyl tricholoro benzene.

4. Name the magnetic materials used for Yoke, Transformer Stampings and permanent magnet.

Yoke of a dc machine, transformer stamping, permanent magnet
Yoke of a dc machine – cast steel
Transformer stamping – silicon steel
Permanent magnet – hard magnetic material (Al, Ni, Co)

5. Comment on the use of CRGOS strip wound transformer core.

CRGOS means cold rolled grain oriented steel. This steel is manufactured by series of cold
reductions and intermediate annealings. This could reduce the material has strong directional of
highest permeability which results less hysteresis loss. This type of material is suitable for use in
transformers.

6. What is meant by heating?

The temperature of a machine rises when it runs under load condition starting from cold condition.
The temperature raises is directly proportional to the power wasted. The heat dissipation may be due to conduction, convection or radiation.

7. What is meant by cooling?

The cooling medium like air, water or gas is provided to absorb the heat energy to save the machine. The cooling medium is also called coo lent. The cooling is of two types like, direct and indirect cooling.

Subject Name	Design of Electrical Machines
Subject Code	EE6604
Regulation	2013

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EE6603 Important Questions Power System Operation and Control

EE6603 Important Questions Power System Operation and Control Regulation 2013 Anna University free download. Power System Operation and Control Important Questions free pdf.

Sample EE6603 Important Questions:

1. What is load curve?

The curve drawn between the variations of load on the power station with reference to time is known as load curve. There are three types, Daily load curve, Monthly load curve, Yearly load curve

2. What is daily load curve?

The curve drawn between the variations of load with reference to varioustime period of day is known as daily load curve.

3. What is monthly load curve?

It is obtained from daily load curve. Average value of the power at a month for a different time periods are calculated and plotted in the graph which is known as monthly load curve.

4. What is yearly load curve?

It is obtained from monthly load curve which is used to find annual load factor.

5. What is connected load?
It is the sum of continuous ratings of all the equipments connected to supply systems.

6. What is Maximum demand?

It is the greatest demand of load on the power station during a given period.

7. What is Demand factor?

It is the ratio of maximum demand to connected load.
Demand factor= (max demand)/ (connected load)

8. What is Average demand?

The average of loads occurring on the power station in a given period (day or month or year) is known as average demand.

Subject Name	Power System Operation and Control
Subject Code	EE6603
Regulation	2013

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EE6602 Important questions Embedded Systems

EE6602 Important questions Embedded Systems Regulation 2013 Anna University free download. Embedded Systems Important questions pdf free download.

Sample EE6602 Important questions:

1. Define a System.

A way of doing one or more tasks according to a program.

2. What is an embedded system?
An embedded system employs a combination of hardware & software (a “computational engine”) to perform a specific function; is part of a larger system that may not be a “computer”; works in a reactive and time-constrained environment

3. What are the typical characteristics of an embedded system?

Typical characteristics:
Perform a single or tightly knit set of functions;
Increasingly high-performance & real-time constrained;
Power, cost and reliability are often important attributes
That influence design; Application specific processor design can be a significant component of some embedded systems.
Other characteristics:
• Application specific
• Digital signal processing in ECS
• Reactive
• Real-time
• Distributed

4. What are the advantages of embedded system?

Advantages:
Customization yields lower area, power, cost, etc.,

5. What are the disadvantages of embedded system?

Disadvantages:
Higher HW/software development overhead design, compilers, debuggers, etc., may result in delayed time to market!

6. What are the applications of an embedded system?

Embedded Systems: Applications:
• Consumer electronics, e.g., cameras, camcorders, etc.,
• Consumer products, e.g., washers, microwave ovens, etc.,
• Automobiles (anti-lock braking, engine control, etc.,)
• Industrial process controllers & avionics/defense applications
• Computer/Communication products, e.g., printers, FAX machines, etc.,
• Emerging multimedia applications & consumer electronics

7. What are the various embedded system designs Modeling

Refining (or “partitioning”)
HW-SW partitioning

8. What are the complicating factors in embedded design?

Complicating factors in the design of embedded systems
• Many of the subtasks in design are intertwined.
• Allocation depends on the partitioning, and scheduling presumes a certain allocation.
• Predicting the time for implementing the modules in hardware or software is not very easy, particularly for tasks that have not been performed before.

Subject Name	Embedded Systems
Subject Code	EE6602
Regulation	2013

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EE6601 Important questions Solid State Drives

EE6601 Important questions Solid State Drives Regulation 2013 Anna University free download. Solid State Drives Important questions free pdf download.

Sample EE6601 Important questions:

1. State essential parts of electrical drive. What are the functions of power modulator?

2. Drive the equations governing motor load dynamics.

3. What are the main factors which decide the choice of electrical drive for a given application?

4. A motor of small rating can be selected for a short time duty why?

5. A constant speed drive has the following duty cycle
a. Load rising from 0 to 400 KW – 5 min.
b. Uniform load of 500 KW – 5 min.
c. Remaining idle for 2 min.
Estimate power rating of the motor. Assume losses to be proportionate to (power)2.

6. Drive the mathematical condition for steady state stability of equilibrium point.

7. Explain in detail the multi quadrant dynamics in the speed – torque plane.

8. A motor drives two loads one has rotational motion. It is couple to the motor through a reduction gear with a=0.1 and efficiency of 90%. The load has a moment of inertia of 10 Kg – m2and a torque of 10 Nm. The other load has translational motion and consist of 1000 kg weight to be lifted up at a uniform speed of 1.5m/s. coupling between this load and the motor has an efficiency of 85%. Motor has an inertia of 0.2 Kg – m2 and runs at constant speed of 1420 rpm. Determine the equivalent inertia referred to the motor shaft and power delivered by the motor.

Subject Name	Solid State Drives
Subject Code	EE6601
Regulation	2013

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EC6651 important questions Communication Engineering

EC6651 important questions Communication Engineering Regulation 2013 Anna University free download. Communication Engineering important questions pdf free download.

Sample EC6651 important questions:

Unit I

1. Explain the woking of a SSB transmitter and receiver.

2. Explain the direct and indirect method of generation of FM signal.

3. Explain a method of generating a DSB-SC signal using ring modulators.

4. Discuss the principle of AM based radio frequency receiver with block diagram

5. Draw and explain the block diagram of Armstrong system for generating FM signal.

6. Derive the equation for the spectrum of FM signal.

7. Explain the operation of super heterodyne receiver with block diagram.

8. Explain the modulation and demodulation process of AM wave.

9. Describe the operation of frequency division multiplexing.

10. Draw the block diagram of generation and demodulation of a VSB signal and explain the principle of operation.

11. With suitable sketch discuss about square law detector.

12. Derive the power relationship of amplitude modulated signal.

13. Explain the method of generation of an amplitude modulated signal and sketch the time domain waveform of message, carrier and modulated signals.

14. Describe the relationship between FM and PM.

15. Explain the demodulation of an AM wave using envelope detector.

16. Deduce an analytical expression for the frequency modulated wave.

17. Discuss any one method of generating the frequency modulate signals with the relevant sketch.

18. Compare wide band and narrow band FM system.

19. How does the phase shift method efficiently suppress the unwanted side band? Explain with diagram.

20. What are the advantages of SSB modulation techniques? Explain any one method of SSB generation.

21. Derive an expression for the narrowband FM wave.

22. Explain pre-emphasis and De-emphasis in FM transmission.

23. Compare AM and FM transmission schemes.

24. Compare FM and PM transmission schemes.

Subject Name	Communication Engineering
Subject Code	EC6651
Regulation	2013

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