0 PS7005 High Voltage Direct Current Transmission Part A Question Bank



PS7005 High Voltage Direct Current Transmission Question Bank
PS7005 Part A Question Bank
M.E - Power Systems
3rd Semester - 2nd Year Question Bank

Unit I

1. List the disadvantages of AC Transmission over long distance.
2. Describe the minimum short circuit ratio recommended by CIGRE to ensure feasibility
of DC transmission.
3. Define energy availability.
4. Name the HVDC Transmission in India.
5. Collect the advantages of HVDC Transmission system.
6. List the uses of filters used at converter station.
7. Summarize any two disadvantages of DC transmission.
8. Discuss the types of DC links.
9. Describe the uses of reactive power source at converter station.
10. Summarize the asynchronous tie.
11. Show the Cost Vs distance curve of AC & DC Transmission.
12. Relate the expression for real power flow through the line.
13. Illustrate the components involved in converter station.
14. Point out the limitations of EHVAC Transmission.
15. Differentiate between conventional Transformer & converter Transformer. 16. Point out about multi terminal DC link.
17. Explain about DC breakers.
18. Explain the variation of voltage along the Transmission line during different loading condition.
19. Generalize the surge impedance loading
20. Develop the 12 pulse converter unit

Unit II

1. Define pulse number.
2. Describe the rectifier modes.
3. List some faults that can occur in converters.
4. Define Value rating.
5. Identify the assumptions mode to simplify the analysis of Graetz circuit.
6. Quote the assumptions mode to simplify the analysis of Graetz circuit.
7. Summarize the 3 variations of the equidistant pulse control
8. Describe Graetz’s circuit.
9. Distingusih overlap angle and extinction angle
10. Describe the term delay angle and its significance in rectifier control
11. Illustrate mode ambiguity
12. Examine the expression for the average DC voltage of Graetz circuit without overlap.
13. Examine the converter bridge characteristics.
14. Differentiate Charactersitis and uncharacterisisstics harmonics
15. Explain the role of smoothing reactor in a DC link
16. Explain the term angle of advance and its significance in inverter control.
17. Explain how a HVDC value must be designed to withstand over voltage protection.
18. Judge the effect of harmonics on HVDC converter system.
19. Generalize the causes of DC side harmonics
20. Generalize the reason to maintain minimum value of delay angle and extinction angle.

Unit III

1. Define current-margin method.
2. List the classification of MTDC system.
3. Tabulate the merits and demerits of series and parallel MTDC systems.
4. Collect the potential application of MTDC systems
5. Describe a multilevel VSC DC system.
6. Name the different types of MTDC system.
7. Discuss the need of MTDC links. Name anyone existing MTDC link in operations.
8. Give three specific areas of MTDC systems.
9. The detection of DC link faults gets complicated in a mesh system.Discuss
10. Give the drawbacks of MTDC system.
11. Classify the control methods used in MTDC systems.
12. Illustrate the drawbacks of voltage limiting control in MTDC system.
13. Show the circuit diagram of a multi infeed system.
14. Point out the typical problems that have to be considered for the study of MTDC system.
15. Explain the term Current reference balancer”
16. Explain two ACR method of control of Multi terminal HVDC link.
17. Judge” Can we extend the two terminal systems to multi terminal system.
18. Discriminate between series and parallel MTDC systems.
19. Develope the bulk power transmission using 2 terminal links diagram.
20. Generalize how to protect the MTDC system.

Unit IV

1. List the assumptions made in DC load flow.
2. Define per unit system.
3. List some essentials of power flow analysis.
4. Name the different types of AC/DC power flow.
5. Describe the unified method of DC power flow.
6. List the applications of load flow analysis.
7. Summarize the sequential method of DC power flow.
8. Give the dc system model.
9. Discuss the additional constraints needed to include for AC-DC power flow.
10. Express the Equations Describing the DC network.
11. Illustrate the advantages of variable elimination method over extended variable
method.
12. Show the Norton’s equivalent circuit for a converter.
13. Show the schematic of the dc converter and give the voltage equation.
14. Explain the two solution methodologies for ac-dc power flow.
15. Pointout the flow chart of the ac-dc power flow.
16. Explain about the identical per unit system of the dc converter system.
17. Summarize the different approaches evolved in load flow analysis of HVDC
transmission system.
18. Deduce the schematic diagram of the five terminal HVDC system.
19. Develop the gauss seidal equation for solution of the ac/dc power flow. 20. Evaluate the parameters to control the angle and the transformer tap of the converter.

Unit V

1. List any two requirements of a good simulation tool.
2. Define parity simulator.
3. List the parameters that could be determined from HVDC system studies.
4. Tabulate the number of system studies that required for the design of a HVDC system.
5. Collect the problems that can be studied using dc simulator.
6. List the tools that can be employed for the simulation of a dynamic system.
7. Give the EMTP representation of a capacitor.
8. Describe the application of switching functions.
9. Discuss transient network analyser.
10. Give the EMTP representation of an inductor.
11. Show the model of a converter transformer.
12. Illustrate the formulation of state equations for α and β sequence ac network.
13. Show the bipolar HVDC line section model.
14. Explain the tools employed for simulation of a dynamic HVDC system. 15. Pointout the advantages of parity simulator.
16. Explain about parity simulator.
17. Summarize some tools that can be employed for the simulation of HVDC systems.
18. Deduce the physical model of a converter transformer.
19. Generalize the need for simulation of HVDC system.
20. Develop the EMTP Model of valve.

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0 EC6202 Electronic Devices and Circuits Part B Question Bank - Anna university 16 Marks Questions



Anna University , Chennai
Third Semester
Department Of Electrical and Electronics Engineering
EC6202-Electronic Devices and Circuits 
Question Bank 
(Regulation 2013)

Unit I

1. With a neat diagram explain the working of a PN junction diode in forward bias and reverse bias and show the effect of temperature on its V-I characteristics. (16)
2. Explain V-I characteristics of Zener diode. (8)
3. Draw the circuit diagram and explain the working of full wave bridge rectifier and derive the expression for average output current and rectification efficiency. (8)
4. Explain the operation of FWR with centre tap transformer. Also derive the following for
this transformer.dc output voltage (4) dc output current (2) (iv) RMS output voltage. (4)
5. Explain the following regulator circuits : (i) Transistorized shunt regulator. (8) (ii) Zener diode shunt regulator. (8)
6. Draw the circuit diagram and explain the operation of full wave rectifier using center tap
transformer and using bridge rectifier without center tap transformer. Obtain the
expression for peak inverse voltage. (16)
7. With neat diagram explain the construction and working of LED. (8)
8. Explain the working of LCD seven segment display using square wave supply. (8)
9. Explain Insulator, Semiconductor & conductor with help of energy band structure.
10. Write down the expression for transient capacitance and diffution capacitance(8)
11. Why the Zener diode is called as regulator(8)

Unit II

1. Compare the following.DMOSFET& EMOSFET (8)
2. N-channel MOSFET & P-channel MOSFET. (8)
3. Explain the biasing technique for JFET. (16)
4. Explain the construction and characteristics of JFET. (16)
5. Explain the construction and characteristics of EMOSFET. (16)
6. Explain the construction and characteristics of DMOSFET. (16)
7. Explain the biasing characteristics of MOSFET. (16)
8. Explain the working and principle of operation of UJT and mention its applications.(16)
9. Explain the working and characteristics of SCR and its applications. (16)
10. Briefly explain the operation of DIAC (8)
11. Briefly explain the operation of TRIAC (8)
12. Explain the principle and operation of bidirectional switch(16)

Unit III

1. Describe the methods of determination of h-parameters from its static Input and output characteristics. (8)
2. Draw and explain the h-parameter equivalent circuit of a transistor in CC configuration. derive the expressions for input impedance ,output impedance, voltage gain and current gain (16)
3. Explain the switching characteristics of a transistor with neat sketch. (10)
4. Describe the static input and output characteristics of CB configuration of a transistor with neat circuit diagram. (16)
5. Derive the expression for current gain, input impedance and voltage gain of a CE Transistor Amplifier. (16)
6. Draw the circuit for determining the transistor common base characteristics and explain how the characteristics are measured and draw the graphs. (16)
7. For a common emitter circuit draw the h-parameter equivalent circuit and write the expressions for input impedance, output impedance and voltage gain. (16)
8. Explain the midband analysis of single stage CE, CB and CC amplifiers. (16)
9. Explain the analysis of low frequency response of RC coupled amplifiers. (16)
10. Compare the characteristics of the different configurations of BJT amplifiers.(8)
11. Draw and explain the hybrid π model of a CE configuration of a transistor and derive the necessary expressions.(16)
12. Draw and explain the h-parameter equivalent circuit of a transistor in CE configuration. Derive the expressions for input impedance ,output impedance, voltage gain and current gain (16) 

Unit IV

1. How to eliminate the cross over distortion.
2. Explain the heat sink design.
3. Explain neutralization techniques
4. Explain working about differential amplifier and derive expression for CMRR
5. Explain transfer characteristics of differential amplifier and derive expression for the same.
6. Explain about single tuned amplifiers
7. Compare the characteristics power amplifiers.
8. Make complete analysis of single tuned amplifier &derive the necessary expressions.
9. Neutrodyne neutralization techniques
10. Hazeltine neutralization techniques
11. Draw a neat circuit diagram and explain working of cascade amplifier and derive the expression for gain and frequency.
12. Describe the input stages of FET amplifiers.

Unit V

1. Explain voltage series and shunt feedback amplifier with an example. (16)
2. Describe the characteristics. Negative feedback. (8)
3. Describe the characteristics Positive feedback. (8)
4. Explain the current series and shunt feedback amplifier with an example. (16)
5. Explain the principle of operation and derive the expression for wein bridge
oscillator.(16)
6. Explain the principle of operation and derive the expression for colpitts oscillator.(16)
7. Derive the expression and characteristics of oscillator
i. RC Phase shift. (8)
ii. Hartley. (8)
8. Explain the operation and advantages of crystal oscillators. (16)
9. comparison of positive and negative feedback(8)
10. Explain the voltage series and current shunt feedback amplifier with an example. (16)
11. Explain the current series and voltageshunt feedback amplifier with an example. (16)
12. Explain about high frequency oscillator working principle.(16)
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0 Anna University EC6202 ELECTRONIC DEVICES AND CIRCUITS Part A Question Bank



EC6202- ELECTRONIC DEVICES AND CIRCUITS
EC6202- ELECTRONIC DEVICES AND CIRCUITS Software Architectures Question Bank
EC6202- ELECTRONIC DEVICES AND CIRCUITS Part A Question Bank
EC6202- ELECTRONIC DEVICES AND CIRCUITS Marks Question Bank


UNIT I

1. Define Semiconductor.
2. Classify Semiconductors.
3. Define Hole Current.
4. Define Knee voltage of a Diode.
5. What is Peak Inverse Voltage?
6. Define Depletion Region in PN Junction Diode.
7. What is Barrier Potential?
8. Define Reverse Saturation Current in PN Junction Diode.
9. What is meant by Diffusion Current in a Semi-conductor?
10. A silicon diode has a saturation current of 7.5 µA at room temperature to 300 °K.
Calculate the saturation current at 400 ° K.
11. What is meant by dynamic resistance of diode?
12. Differentiate between Zener Breakdown and Avalanche breakdown.
13. Define Rectifiers. List the types of Rectifiers.
14. Compare the various types of Rectifiers.
15. Define Voltage Regulators. List the types of Voltage Regulators.
16. What is the necessity of Filters? List the types of Filters.
17. Define Electroluminescence.
18. What are the advantages of LCD Displays?
19. What is transition capacitance
20. Comparison of diffusion and transition capacitance

Unit II

1. Define cutoff voltage of a transistor.
2. What does UJT stands for? Justify the name UJT.
3. Give the symbol and structure of TRIAC.
4. Give the application of TRIAC.
5. Give some applications of DIAC.
6. Give the basic construction and symbol of DIAC.
7. What is a SCR?
8. Define break over voltage of SCR.
9. Why SCR cannot be used as a bidirectional switch.
10. How turning on of SCR is done?
11. Define holding current in a SCR.
12. List the advantages of SCR.
13. List the application of SCR.
14. What is meant by latching?
15. List the important ratings of SCR.
16. Compare SCR with TRIAC.
17. Differentiate BJT and UJT.
18. What is a thyristor?
19. Give the various triggering devices for thyristors.
20. Power MOSFET is a voltage controlled device. Why?

Unit III

1. What is an amplifier?
2. How are amplifiers classified according to the input?
3. How are amplifiers classified according to the transistor configuration?
4. What is the different analysis available to analyze a transistor?.
5. How can a DC equivalent circuit of an amplifier be obtained?
6. List out the parameters of hybrid model.
7. Why CE configuration is preferred over CB configuration
8. Draw the π model circuit for CE
9. Draw the π model circuit for CC
10. Draw the h model circuit for CE
11. Draw the h model circuit for CB
12. draw a source follower circuit.
13. Draw the circuit diagram of CS amplifier.
14. Define base width modulation(early effect).
15. Define current gain and voltage gain.
16. Define input impedance and output impedance of a transistor.
17. Define amplification factors.
18. Define base spreading resistance.
19. Deduce the relation between amplification factors.
20. Define thermal run away and heat sink.

Unit IV

1. What is an amplifier?
2. How are amplifiers classified according to the input?
3. How are amplifiers classified according to the transistor configuration?
4. What is the different analysis available to analyze a transistor?
5. Briefly define about class B amplifier
6. What is cross over distortion?
7. Define Common Mode Rejection Ratio.
8. How can a DC equivalent circuit of an amplifier be obtained?
9. Mention the advantages of Push pull amplifier
10. What is need of Complementary symmetry amplifiers?
11. Difference between common mode and difference mode?
12. Mention the neutralisation techniques
13. Advantages of class-c amplifier
14. What is source follower
15. MOSFET small signal model parameters
16. What is the need of heat sink
17. Compare gain and frequency
18. What is BIMOS cascade amplifier
19. What is single tune amplifier
20. List out the efficiencies of power amplifiers.

Unit V

1. What is feedback?
2. What are feedback amplifiers?
3. What are the types of feedback?
4. What is positive feedback?
5. What is negative feedback?
6. Which feedback decreases the gain of the amplifier?
7. Which feedback increases the gain of the amplifier?
8. What is the advantage of negative feedback?
9. What is the disadvantage of negative feedback?
10. Define sensitivity.
11. Define Desensitivity.
12. What is oscillator circuit?
13. What are the conditions for sustained oscillator or
14. what is Barkhausen criterion?
15. What are the classifications of Oscillators?
16. What is Miller crystal oscillator? Explain its operation.
17. State the frequency for RC phase shift oscillator.
18. Draw the equivalent circuit of crystal oscillator.
19. List out the essential blocks of an oscillator.
20. What is oscillator phase shift?
[Read More...]


0 IT6602 Software Architectures 16 Marks Question Bank - Anna University IT6602 6th Semester Question Bank



IT6602 Software Architectures Question Bank
IT6602 Part B Question Bank
IT6602 16 Marks Question Bank
Anna University IT6602 6th Semester Question Bank

Unit-1

1. Explain in detail the building of Architecture business cycle by identifying the
factors of influence.
2. Explain how the architecture business cycle works, with a neat diagram
3. With the help of a neat block diagram of ABC, explain in detail the different
activities which are involved in creating a software architecture
4. Describe the architectural structure of a system
5. Define software architecture. Explain the common software architecture structures
6. Define architectural style. Mention any four commonly used styles
7. What are the qualities of the system? Explain the modifiability general scenario.
8. List all the common software architecture structures. Explain the component connector
structure
9. What is an allocation structure as applied to software architectures? Explain the three
allocation structures in practice
10. Enumerate and explain in detail the different groups software architecture structures
are categorized into with the help of appropriate pictorial descriptions
11. Define the following terms: i)architectural model ii)reference model iii)reference
architecture
12. Explain the various process recommendations as used by an architect while developing
software architectures

Unit-2

1. What is availability? Explain the general scenario for availability
2. Explain in detail about QAW
3. What are the qualities of the system? Explain the modifiability general scenario
4. What are the qualities that the architecture itself should possess?
5. What is a quality attribute scenario? List the parts of such a scenario. Distinguish
between availability scenarios and modifiability scenarios
6. Explain in brief documenting the quality attributes
7. With the help of appropriate diagrams, explain the availability scenario and testability
scenario in detail
8. What do you mean by tactics? Explain the availability tactics, with a neat diagram

Unit-3

1. Explain in detail Structures and view and their relationship between architecture
2. Describe in how the architectural documented and representing views
3. Explain in detail the 4+1 View of RUP
4. Explain in detail Siemens 4 views and SEI’s Perspectives and views

Unit-4

1. Explain the fundamental architectural concept and style elements with its benefits
2. Describe the suitable notation for Data flow styles with its types
3. Explain in details any two shared information styles
4. Explain in detail Call and return styles
5. Explain in detail black board architectural styles and Invent based styles
6. Explain any three key word in context

Unit-5

1. Write a short note on Documenting the Views using UML
2. Discuss the Merits and Demerits of using visual languages
3. Write a short note on Need for formal languages
4. Explain in detail Architectural Description Languages
5. Explain in detail ACME
6. Explain in detail SOA and Web services
7. Explain in detail Cloud Computing
8. Explain in detail Adaptive structures
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0 IT6602 Software Architectures Part A Question Bank - Anna University IT6602 6th Semester Question Bank



IT6602 Software Architectures Question Bank
IT6602 Part A Question Bank
IT6602 2 Marks Question Bank
Anna University IT6602 6th Semester Question Bank

Unit-1

1. Define architectural patterns
2. Why is software architecture important?
3. What makes a “good” architecture?
4. Define architecture business cycle
5. List the System quality attributes
6. What makes a good architectural process?
7. Where do architectures come from?

Unit-2

1. What is System quality attributes
2. List the steps involves in QAW steps
3. Why documenting the quality attributes is importance
4. Define architectural qualities

Unit-3

1. State the term view
2. What is viewpoint
3. Define direct inconsistencies
4. Define refinement inconsistencies
5. Differentiate static and dynamic inconsistencies
6. How RUP helps in developing system?
7. Define scenarios
8. What is meant by Siemens 4 views
9. Define component and connector view type

Unit-4

1. Define architectural styles
2. What is meant by sequential batch styles
3. Differentiate between data flow and control flow
4. Define pipe and filters
5. List the advantages and disadvantages of pipes and filters

Unit-5

1. Write a short note on Need for formal languages
2. What is meant by ACME
3. What is meant by SOA
4. What is meant by Web services
5. Define cloud computing
[Read More...]


 
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