EC6405 Question Bank Control System Engineering

EC6405 Question Bank Control System Engineering Regulation 2013 Anna University free download. Control System Engineering Question Bank free download.

Sample EC6405 Question Bank:

1. What are transient and steady state response of control system?

2. What are the units of kp, kv, ka?

3. Define Transfer Function of the System.

4. What are the advantages of Closed loop System?

5. What are the Properties of Signal flow graphs?

6. Write Mason’s gain formula of Signal flow graph.

7. Name any two dynamic models to represent control system.

8. What is meant by block diagram of a control system? What are the basic components of block diagram?

9. List the basic elements used for modelling a mechanical rotational system.

10. What is feedback? What type of feedback is employed in Control system?

11. Why negative feedback is preferred in control system?

12. Write F-V Analogy for the elements of mechanical rotational system?

13. Write any two rules to be followed in block diagram reduction techniques.

14. Define non-touching loop.

15. What is Control System?

16. What is signal flow graph?

17. Name the two types of electrical analogous for mechanical

system.

18. Write force balance equation of ideal spring, ideal mass.

19. Define open loop System and Closed loop System.

20. What is mathematical model of a system?

21. How a Control system is classified depending on the value of damping ratio?

22. List the advantages of generalized error coefficients.

23. Why derivative controller is not used in Control systems?

24. Give steady state errors to a various standard inputs for type 2 systems.

25. Determine the Damping ratio and natural frequency of oscillation.

26. What is meant by peak overshoot?

27. What is meant by steady state error?

28. Define rise time.

29. The damping ratio and natural frequency of a second order system are o.5 and 8 rad/sec respectively. Calculate resonant peak and resonant frequency.

Subject Name	Control System Engineering
Subject Code	EC6405
Regulation	2013

EC6405 Question Bank click here to download

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EC6404 Question Bank Linear Integrated Circuits

EC6404 Question Bank Linear Integrated Circuits Regulation 2013 Anna University free download. Linear Integrated Circuits Question Bank free download.

Sample EC6404 Question Bank:

1) List the basic building blocks of PLL.

2) Define lock-in range & capture range of a PLL.

3) Define Pull-in time.

4) For perfect lock, what should be the phase relation between the incoming signal and VCO output signal?

5) Give the classification of phase detector. What is a switch type phase detector?

6) What are the problems associated with switch type phase detector?

7) What is a voltage controlled oscillator? VCO is also called as V-f converter. Why?

8) On what parameters does the free running frequency of VCO depend on?

9) Give the expression for the VCO free running frequency.

10) Define Voltage to Frequency conversion factor.

11) What is the purpose of having a low pass filter in PLL?

12) Discuss the effect of having large capture range.

13) What is a PLL? Mention some typical applications of PLL

14) What is a compander IC? Give some examples.

15) What are the merits of companding?

16) List the applications of OTA.

17) What is a four quadrant multiplier?

18) What is modulation?

19) Draw the circuit of AM detector using PLL.

20) What are the advantages & disadvantages of monolithic PLLs over Discrete PLLs?

PART B

1) What is 555 timer? What are the features of 555 timer? Explain the monostable mode in detail?

2) Explain the Astable mode of operation using 555 timer.

3) a) In detail discuss the 723 IC general purpose voltage regulator.
b) Explain the operation of switching regulators. Give its advantages.

4) Explain the functional diagram of LM 380 power amplifier and the essential characteristics.

5) Explain in detail the function of 555 timer in astable mode and derive the expression for the pulse width.

6) Write a short notes on
(i) Optocouplers
(ii) Switched capacitor filter
(iii) Isolation amplifier

Subject Name	Linear Integrated Circuits
Subject Code	EC6404
Regulation	2013

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EC6403 Question Bank Electromagnetic Fields

EC6403 Question Bank Electromagnetic Fields Regulation 2013 Anna University free download. Electromagnetic Fields Question Bank free download.

Sample EC6403 Question Bank:

1. Define Divergence. (May 2010)

2. State Coulomb’s law. (Nov 2009/May 2008)

3. Define electric field intensity at a point. (Dec 2011)

4. What is an equipotential surface? (May 2011)

5. State Gauss’s Law.(May 2008)

6. State the applications of Gauss’s law. (May 2007)

7. State Divergence Theorem.(Dec2010/May 2009)

8.State Stoke Theorem. (April/may 2004, Nov/Dec 2007, 2009, April
2010).Give the meaning of Stoke’s theorem. (Nov 2014)

9. Explain the term irrotational and solenoidal as applied to vector F.(Dec 2004)

10. Given two points in Cartesian coordinate system as A (3,-2, 1),B (-3,-3,5).find distance from B to A. (Dec 2010)

11. Give the principles of superposition (Dec 2002,2004)

12. Mention any two sources of electromagnetic field.(May 2008)

13. A uniform surface charge of s=2 μc/m2 is situated at z=2 plane, what is the value of electric field intensity at P(1,1,1)?(June 2011)

14. Why Gauss’s law cannot be applied to determine the electric field due to finite line charge?(Dec 2008)

15. Define potential (May 2004, 2010)

16. State the principle of superposition as applied to an electric potential of a point.(May 2004,2005)

17. State the nature of conservative field.(May 2005,Nov 2005)

18. Give the relation between electric field and potential.(May 2007,Dec 2007)

19. Define volume charge density.(May/June 2006)

20. What is the physical significance of the term “divergence of a vector field”?(May/June 2006)

21. Name 3 coordinate systems used in electromagnetic engineering?

22. How to represent a point in a Cartesian system?

23. What is separation of vector?

24. State Distance formula?

25. What are differential elements in Cartesian system?

26. What are the differential elements in cylindrical system?

Subject Name	Electromagnetic Fields
Subject Code	EC6403
Regulation	2013

EC6403 Question Bank click here to download

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EC6402 Question Bank Communication Theory

EC6402 Question Bank Communication Theory Regulation 2013 Anna University free download. Communication Theory Question Bank free download.

Sample Question Bank:

1. Compare AM, DSB-SC, SSB and VSB wave?

2. Define modulation index of AM signal..

3. Compare Frequency and Phase modulation.

4. Convert NBFM to WBFM?

5. Define noise figure.

6. Define Thermal noise.

7. Define Figure of merit.

8. Define pre-emphasis and de-emphasis

9. What is channel redundancy?

10. State Shannon‘s theorem

11. ((i) Explain Frequency Translation. (8)
(ii) Derive the equation of an AM wave. Also draw the modulated AM wave for various modulation index. (8)
OR
(b(i) Explain the generation of SSB signal. (10)
(ii) Show that an AM can be recovered, irrespective of value of % modulation by using synchronous detection technique. (6)

12 (a) (Draw the circuit diagram of Foster-Seeley discriminator and explain its working. (16)
OR
(b) (i) Explain the Armstrong method for generation of FM signal with block diagram. (10)
(ii) A modulating signal 5cos (2π15*1000t) angle modulates a carrier Acosωt. Find the modulation index & bandwidth for FM system & determine the change in bandwidth & modulation index for FM if fm is reduced by 5 KHz. (6)

13. (a) Derive the effective noise temperature of a cascade amplifier. Explain how the various noises are generated and the method of representing them. (16)
OR
(b) Discuss the following:
i) noise equivalent bandwidth (4)
ii) narrow band noise (4)
iii) noise temperature (4)
iv) noise spectral density (4)

14. (a) Explain the working of AM & FM Superheterodyne receivers with its parameters. (16)
OR
(b) Derive the expression for output signal to noise for a DSB-SC receiver using coherent detection. (16)

 

Subject Name	Communication Theory
Subject Code	EC6402
Regulation	2013

EC6402 Question Bank click here to download

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EC6401 Question Bank Electronic Circuits 2

EC6401 Question Bank Electronic Circuits 2 Regulation 2013 Anna University free download. Electronic Circuits 2 Question Bank free download.

Sample EC6401 Question Bank:

1. What are the advantages and disadvantages of RC phase shift oscillators?[ APR/MAY 2008]

Advantages:

i. It is best suited for generating fixed frequency signals in the audio frequency range.
ii. It requires no transformer or inductor, hence less bulky.
iii. Simple Circuit.
*Pure sine wave output is possible.

Disadvantages:

i) It requires a high β transistor to overcome losses in the network.
ii) These oscillators are not suitable for high frequency operation.
iii) Frequency of oscillation can not be changed easily. To change the frequency of oscillation, the three capacitor or resistors should be changed simultaneously. This is inconvenient.

2. What is the necessary condition for a Wien bridge oscillator circuit to have sustained oscillations? [MAY/JUNE 2013]

Then for oscillations to occur in a Wien Bridge Oscillator circuit the following conditions must apply.

• With no input signal the Wien Bridge Oscillator produces output oscillations.
• The Wien Bridge Oscillator can produce a large range of frequencies.
• Voltage gain of the amplifier must be at least 3.
• The network can be used with a Non-inverting amplifier.
• Input resistance of the amplifier must be high compared to R so that the RC network is not overloaded and alter the required conditions.
• The output resistance of the amplifier must be low so that the effect of external loading is minimised.

3. Define piezoelectric effect.[MAY/JUNE 2006]

The piezo electric Crystals exhibit a property that if a mechanical stress is applied across one face the electric potential is developed across opposite face and viceversa. This phenomenon is called piezo electric effect.

4. What is the principle behind operation of a crystal oscillator?[NOV/DEC 2007]

The principle behind the operation of crystal is piezoelectric effect. According to this effect, if a mechanical stress is applied across one face the electric potential is developed across opposite face and viceversa.

Subject Name	Electronic Circuits 2
Subject Code	EC6401
Regulation	2013

EC6401 Question Bank click here to download

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MA6451 Question Bank Probability and Random Processes

MA6451 Question Bank Probability and Random Processes regulation 2013 Anna University free download. Probability and Random Processes Question Bank free download.

Sample MA6451 Question Bank questions:

1. The pdf of the samples of the amplitude of speech wave foem is found to
decay exponentially at rate , so the following pdf is proposed f(x) =
|x| Ce  , –  < X < . Find C, E(x)

2. Find the MGF of a binomial distribution and hence find the mean and
variance.

3. Find the recurrence relation of central moments for a binomial distribution.

4. The number of monthly breakdowns of a computer is a RV having a
poisson distribution with mean equal to 1.8. Find the probability that this
computer will function for a month (a) without a breakdown, (b) Wish only one
breakdown, (c)Wish at least one break down.

5. Find MGF and hence find mean and variance form of binomial distribution.

6. State and prove additive property of poisson random variable.

7. If X and Y are two independent poisson random variable, then show that
probability distribution of X given X+Y follows binomial distribution.

8. Find MGF and hence find mean and variance of a geometric distribution.

9. State and prove memory less property of a Geometric Distribution.

10. Find the mean and variance of a uniform distribution.

11. A box contains 5 red and 4 white balls. A ball from the box is taken our at
random and kept outside. If once again a ball is drawn from the box, what
is the probability that the drawn ball is red?

Subject Name	Probability and Random Processes
Subject Code	MA6451
Regulation	2013

MA6451 Question Bank  click here to download

Probability and Random Processes syllabus click here

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EE6404 Question Bank Measurements and Instrumentation

EE6404 Question Bank Measurements and Instrumentation Regulation 2013 Anna University.

Sample EE6404 Question Bank:

PART – A
1. What are the functional elements of an instrument? (2)

2. What is meant by accuracy of an instrument? (2)

3. Define international standard for ohm? (2)

4. What is primary sensing element? (2)

5. What is calibration? (2)

6. Define the terms precision & sensitivity. (2)

7. What are primary standards? Where are they used? (2)

8. When are static characteristics important? (2)

9. What is standard? What are the different types of standards? (2)

10. Define static error. Distinguish reproducibility and repeatability (2)

11. Distinguish between direct and indirect methods of measurements. (2)

12. With one example explain “Instrumental Errors”. (2)

13. Name some static and dynamic characteristics. (2)

14. State the difference between accuracy and precision of a measurement. (2)

15. What are primary and secondary measurements? (2)

16. What are the functions of instruments and measurement systems? (2)

17. What is an error? How it is classified? (2)

18. Classify the standards of measurement? (2)

19. Define standard deviation and average deviation. (2)

20. What are the sources of error? (2)

Part B

1. Describe the functional elements of an instrument with its block diagram. And illustrate them with pressure gauge, pressure thermometer and D’Arsonval galvanometer. (16)

2. What are the three categories of systematic errors in the instrument and explain in detail.
(16)

3. (i) What are the basic blocks of a generalized instrumentation system. Draw the various
blocks and explain their functions. (10)

(ii) Explain in detail calibration technique and draw the calibration curve in general. (6)

4. (i) Discuss in detail various types of errors associated in measurement and how these errors can be minimized? (10)

(ii) Define the following terms in the context of normal frequency distribution of data (6)
a) Mean value, b) Deviation, c) Average deviation, d) Variance e) Standard deviation.

5. (i) Define and explain the following static characteristics of an instrument. (8)
a) Accuracy, b) Resolution, c) Sensitivity and d) Linearity

Subject Name	Measurements and Instrumentation
Subject Code	EE6404
Regulation	2013

EE6404 Question Bank Click here to download

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EE6403 Question Bank Discrete Time Systems and Signal Processing

EE6403 Question Bank Discrete Time Systems and Signal Processing Regulation 2013 Anna University free download.

Sample EE6403 Question Bank:

1.What is DFT?

It is a finite duration discrete frequency sequence, which is obtained by sampling one period of Fourier transform. Sampling is done at N equally spaced points over the period extending from w=0 to 2л.

2. Define N point DFT.

The DFT of discrete sequence x(n) is denoted by X(K). It is given by, Here
k=0,1,2…N-1 Since this summation is taken for N points, it is called as N-point DFT.

3. What is DFT of unit impulse δ(n)?

The DFT of unit impulse δ(n) is unity.

4. List the properties of DFT.

Linearity, Periodicity, Circular symmetry, symmetry, Time shift, Frequency shift, complex conjugate, convolution, correlation and Parseval‘s theorem.

5. State Linearity property of DFT.

DFT of linear combination of two or more signals is equal to the sum of linear combination of DFT of individual signal.

6. When a sequence is called circularly even?

The N point discrete time sequence is circularly even if it is symmetric about the point zero on the circle.

7. What is the condition of a sequence to be circularly odd?

An N point sequence is called circularly odd it if is antisymmetric about point zero
on the circle.

8. Why the result of circular and linear convolution is not same?

Circular convolution contains same number of samples as that of x (n) and h (n), while in linear convolution, number of samples in the result (N) are, N=L+M-1 Where L= Number of samples in x (n) M=Number of samples in h (n)

9. What is circular time shift of sequence?

Shifting the sequence in time domain by ‗1‘ samples is equivalent to multiplying the sequence in frequency domain by WNkl

Subject Name	Discrete Time Systems and Signal Processing
Subject Code	EE6403
Regulation	2013

EE6403 Questions Bank  Click here to download

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EE6402 Question Bank Transmission and Distribution

EE6402 Question Bank Transmission and Distribution Regulation 2013 Anna University

Sample EE6402 Question Bank :

1. What is meant by power supply system?

2. What is meant by Transmission and Distribution system?

3. What are the different types of Power supply system?

4. What are the various components of power supply system?

5. What are the different types of power plants?

6. What are the different operating voltages used for generation, primary and secondary transmission in AC power supply systems in India?

7. Define feeder, distributor and service mains

8. List the advantages of high voltage transmission.

9. State Kelvin’s law.

10. What are the limitations of Kelvin’s law?

11. Name various types of HVDC links.

12.Why all Transmission and Distribution systems are 3 phase systems?

13.Why all overhead lines use ACSR conductors?

14. Why transmission lines are 3 phase 3 wire circuits while distribution lines are 3 phase 4 wire circuits?

15.Write the difference between EHVAC and HVDC transmission systems.

16.State the advantages of ring main systems.

17.State the advantages of interconnected system.

18.What is a ring distributor?

19.What are the advantages and disadvantages of high voltage ac transmission?

20.Why dc transmission is economical and preferable over ac transmission for long distance only?

Subject Name	Transmission and Distribution
Subject Code	EE6402
Regulation	2013

EE6402 Question Bank Click here to download

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CS6456 Question Bank Object Oriented Programming

CS6456 Question Bank Object Oriented Programming Regulation 2013 Anna University

Sample CS6456 Question Bank:

Part – A

1. Give some characteristics of procedure-oriented language.

2. What are the basic concepts of OOPS?

3. What is an object?

4. What is a class?

5. What is an encapsulation?

6. What is meant by dynamic binding or late binding?

7. Write the process of programming in an object-oriented language?

8. List any four advantages of OOPS.

9. What are the features required for object-based programming language?

10. Give any four applications of the OOPS.

11. What are the operators available in C++?

12. What is a scope resolution operator?

13. What is a default argument?

14. What is constant argument?

15. How the class is specified?

16. How do you create an object?

17. How do you access a class member?

18. How is the member functions defined?

19. What are the features of static data member?

20. What are the situations that inline functions may not work?

Part – B

1. Difference between procedure oriented and object oriented program.

2. Difference between Struct and Class in also illustrate with Example

3. Explain the basic features of Object oriented programming in C++.

4. Explain briefly about Constructor and it types with suitable Example.

5. Explain about Storage Classes in C++ with Examples.

6. Explain the following
i)Pointer object.
ii) this pointer

7. Write a C++ program to get and display employee details using class and object

8. Explain the following terms with respect to OOPS .Give suitable examples
(i) Dynamic Binding
(ii) Message Passing
(iii) Reusability
(iv) Polymorphism

9. Relationship between arrays and pointers

10. Implementing stack operation using array.

Subject Name	Object Oriented Programming
Subject Code	CS6456
Regulation	2013
File detail	PDF of Question Bank

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