ME6403 Important Questions Engineering Materials and Metallurgy

ME6403 Important Questions Engineering Materials and Metallurgy regulation 2013 Anna University

Sample ME6403 Important Questions:

1. What is Materials Science?

Materials Science is an interdisciplinary subject which is concerned with the study of materials as a whole like behavior of the material, production of the material, applications and study of all properties of the material along with its macro and micro-structures.

2. How do you select a material for the transformer windings?

Oxygen free high conductivity copper is the best material for transformer windings since it has low joule heat losses, high corrosion resistance, high conductivity, high ductility to draw into thin wires and high strength.

3. Mention the required properties of bearing materials.

• It should have high conductivity.
• It should have high strength and high impact strength.
• It should have high fatigue resistance.
• It should withstand the load without any deformation of friction.

4. What are the required properties of the materials for making thermocouples?

1) The thermocouple material should have larger thermoelectric effect (i.e., produce more voltage or more cooling effect per unit rise of temperature.)
2) It should have high melting point.
Example: Lead telluride semiconductor (where lead is then type and tellurium is The p type semiconductor with 61.9% pb+ 38.1% Te). It has more thermoelectric generators to produce more electric power and thermoelectric refrigerators to produce more cooling effects.

5. What are metallic glasses?

Metallic glasses have the properties of metals and glasses such that they have ductility,malleability and brittleness. Ferromagnetic metallic glasses are in the form of ribbons and are used as light weight magnetic cores having no losses and high energy products.

Subject Name	Engineering Materials and Metallurgy
Subject Code	ME6403
Regulation	2013
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ME6402 important questions Manufacturing Technology 2

ME6402 important questions Manufacturing Technology 2 Regulation 2013 Anna University

Sample ME6402 important questions:

1. What is rake angle? What is the effect of nose radius in tools?

The angle between the tool face and the line parallel to the base of the tool is known as side rake angle. It is used to control chip flow.

2. What is tool?

The various angles of tools are mentioned in a numerical number in particular order. That is known as tool signature.

3. Explain the nose radius?

It is the joining of side and end cutting edges by means of small radius in order to increase the tool life and better surface finish on the work piece.

4. Name the factors that contribute to poor surface finish in cutting?

Cutting speed
Feed
Depth of cut.

5. What is orthogonal cutting?

The cutting edge of tool is perpendicular to the work piece axis

6. Define oblique cutting?

Oblique cutting: – The cutting edge is inclined at an acute angle with normal to the cutting velocity vector is called oblique cutting process

7. What is meant by honing?

An abrading process of finishing previously machined surfaces is known as honing.

8. What are the advantages of honing process?

• Simple process which can be done on any general purpose machines such as lathes and drilling machines.
• This process can be applied for both internal cylindrical and flat
  surfaces.
• Honing enables the maximum stock removing capacity out of entire
  surface finishing operations.

9. What is meant by dressing and truing?

Dressing is the process of loading and breaking away the glazed surface so that new sharp abrasive particles are again present to work for efficient cutting. Truing is the process of trimming the cutting surface of the wheel to run true with the axis.

Subject Name	Manufacturing Technology 2
Subject Code	Me6402
Regulation	2013
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ME6401 Important Questions KINEMATICS OF MACHINERY

ME6401 Important Questions KINEMATICS OF MACHINERY Regulation 2013 Anna University

Sample Me6401 important questions :

1. What is Kinematics?

Kinematics is the study of motion (position, velocity, acceleration). A major goal of
Understanding kinematics is to develop the ability to design a system that will satisfy Specified motion requirements. This will be the emphasis of this class.

2. What is Kinetics?

Kinetics is the study of effect of forces on moving bodies. Good kinematic design
should produce good kinetics.

3. Define Link.

A link is defined as a member or a combination of members of a mechanism
connecting other members and having relative motion between them. The link may consist of one or more resistant bodies. A link may be called as kinematic link or element. Eg: Reciprocating steam engine.

4. Define Kinematic Pair.

Kinematic pair is a joint of two links having relative motion between them. The types of kinematic pair are classified according to
Nature of contact (lower pair, higher pair)
To nature of mechanical contact (Closed pair, unclosed pair)
Nature of relative motion (Sliding pair, turning pair, rolling pair, screw pair,
spherical pair)

5. Define Kinematic Chain

When the kinematic pairs are coupled in such a way that the last link is joined to the first link to transmit definite motion it is called a kinematic chain.
Eg: The crank shaft of an engine forms a kinematic pair with the bearings which are fixed in a pair, the connecting rod with the crank forms a second kinematic pair, the piston with the connecting rod forms a third pair and the piston with the cylinder forms the fourth pair. The total combination of these links is a kinematic chain.

Eg: Lawn mower.

Subject Name	KINEMATICS OF MACHINERY
Subject Code	Me6401
Regulation	2013
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MA6452 important questions Statistics and Numerical Methods

MA6452 important questions Statistics and Numerical Methods regulation 2013 Anna University

Sample MA6452 important questions:

1. State level of significance.

2. What are parameters and statistics in sampling?

3. Mention the various steps involved in testing of hypothesis.

4. Define Type – I error and Type – II errors.

5. What are null and alternate hypothesis?

6. What are the applications of t -distributions?

7. Define Chi-Square test for goodness of fit.

8. A random sample of 200 tins of coconut oil gave an average weight of 4.95 kgs. With a standard deviation of 0.21 kg. Do we accept that the net weight is 5 kgs per tin at 5% level?

9. State the application of Chi-square test.

10. State the conditions for applying ℵ? test.

11. What are the conditions for the validity of ℵ? -test?

12. What is the order of convergence of Newton-Raphson methods if the multiplicity of the root is one.

13. What is the rate of convergence in N.R method?

14. Define round off error.

15. State the principle used in Gauss-Jordan method.

16. Compare Gaussian elimination method and Gauss- Jordan method.

17. Derive Newton’s algorithm for finding the pth root of a number N.

Subject Name	Statistics and Numerical Methods
Subject Code	MA6452
Regulation	2013
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CE6405 important questions Soil Mechanics

CE6405 important questions Soil Mechanics Regulation 2013 Anna University.

Sample CE6405 important questions:

1. Define Soil mechanics.

Soil mechanics is defined as the application of the laws and principles of mechanics and hydraulics to engineering problems dealing with soil as an engineering material

2. What is compaction?

The process by which the porosity of a given form of sediment is decreased as a result of its mineral grains being squeezed together by the weight of overlying sediment or by mechanical means.

3. What is shrinkage limit?

The shrinkage limit (SL) is the water content where further loss of moisture will not result in any more volume reduction.

4. Define Liquid limit.

The plastic limit (PL) is the water content where soil starts to exhibit plastic behavior. A thread of soil is at its plastic limit when it is rolled to a diameter of 3 mm and crumbles. To improve consistency, a 3 mm diameter rod is often used to gauge the thickness of the thread when conducting the test.

5. What is Plasticity Index?

The plasticity index (PI) is a measure of the plasticity of a soil. The plasticity index is the size of the range of water contents where the soil exhibits plastic properties. The PI is the difference between the liquid limit and the plastic limit (PI = LL‐PL). Soils with a high
PI tend to be clay, those with a lower PI tend to be silt, and those with a PI of 0 tend to have little or no silt or clay

6. Define the term Liquidity Index.

The liquidity index (LI) is used for scaling the natural water content of a soil sample to the limits. It can be calculated as a ratio of difference between natural water content, plastic limit, and plasticity index: LI=(W‐PL)/(LL‐PL) where W is the natural water content.

 

Subject Name	Soil Mechanics
Subject Code	CE6405
Regulation	2013
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CE6404 Important questions SURVEYING 2

CE6404 Important questions SURVEYING 2 REGULATION 2013 Anna University

Sample CE6404 Important questions :

1. Define Tacheometry:

Tacheometry is a branch of angular surveying in which the horizontal and
vertical distances (or) points are obtained by optional means as opposed to
the ordinary slower process of measurements by chain (or) tape.

2. Define Tacheometer:

It is an ordinary transit theodolite fitted with an extra lens called analytic
lens. The purpose of fitting the analytic lens is to reduce the additive constant
to zero.

3. Staff intercept:

The difference of the reading corresponding to the top and bottom stadia wires.

4. Stadia intercept:

The difference of the distance between the top and bottom cross hairs. In this method stadia interval is variable. The staff intercept is kept fixed while the stadia interval is variable.

5. The tangential method:

a. In this method, the stadia hairs are not for taking readings. The readings being taken against the horizontal cross hair.

6. What are the systems of tacheometry measurements?

a. The stadia system The tangential system

b. Measurement by means of special instrument.

7. What are the types of stadia system?

a. Fixed hair method, Movable hair method

8. What is the principle of stadia method?

a. The method is based on the principle that the ratio of the perpendicular to the base is constant to similar isosceles triangle.

9. Baseline :

The Base line is laid down with great accuracy of measurement & alignment as it forms the basis for the computations of triangulation system the length of the base line depends upon the grades of the triangulation.

10. Laplace Station :

At certain station, astronomical observations for azimuth & longitude are also made on the station is called Laplace station.

Subject Name	Surveying 2
Subject Code	CE6404
Regulation	2013
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CE6402 IMPORTANT QUESTIONS STRENGTH OF MATERIALS

CE6402 IMPORTANT QUESTIONS STRENGTH OF MATERIALS REGULATION 2013 ANNA UNIVERSITY

Sample for Ce6402 important questions:

1. Define: Strain Energy

When an elastic body is under the action of external forces the body deforms and work is done by these forces. If a strained, perfectly elastic body is allowed to recover slowly to its unstrained state. It is capable of giving back all the work done by these external forces. This work done in straining such a body may be regarded as energy stored in a body and is called strain energy or
resilience.

2. Define: Proof Resilience.
The maximum energy stored in the body within the elastic limit is called Proof Resilience.

3. Write the Castigliano‟s first theorem.

In any beam or truss subjected to any load system, the deflection at any point is given by the partial differential coefficient of the total strain energy stored with respect to force acting at a point.

4. What are uses of Castigliano‟s first theorem?

• To determine the deflection of complicated structure.
• To determine the deflection of curved beams, springs.

5. Compare the unit load method and Castigliano‟s first theorem

In the unit load method, one has to analyze the frame twice to find the load and
deflection. While in the latter method, only one analysis is needed.

6. Define : Modulus of resilience.

The proof resilience of a body per unit volume. (ie) The maximum energy stored in the body within the elastic limit per unit volume.

7. Define : Trussed Beam.

A beam strengthened by providing ties and struts is known as Trussed Beams.

 

Subject Name	STRENGTH OF MATERIALS
Subject Code	CE6402
Regulation	2013
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CE6401 Important Questions CONSTRUCTION MATERIALS REGULATION 2013 Anna University

CE6401 Important Questions CONSTRUCTION MATERIALS REGULATION 2013 Anna University free download pdf.

Sample CE6401 Important Questions:

1. Why you choose stone as a building material?

2. Write down the characteristics of good stone?

3. List out the types of tests on stones.

4. List out the tests on bricks?

5. Define the term frog.

6. Explain deterioration and preservation of stone work?

7. List out the names of bricks for special use.

8. Explain light weight concrete blocks?

9. What is the standard size of brick used for construction?

10. How will you classify bricks? Write down the types of bricks?

11. How do you store lime and what are the precautions in handling lime?

12. List out the types of tests for lime. Give some examples.

13. List out the various grades of cement in India.

14. Write down the mechanics of setting of cement.

15. Write down the formula for lime saturation factor (LSF).

16. What are the industrial byproducts of cement?

17. What do you mean by setting time of cement?

18. What are the required chemical and physical characteristics of flyash?

19. How will you classify sand for making concrete?

20. List out the tests for quality of sand. Explain any one of them.

21. What do you mean by aggregate abrasion value?

22. Write down the tests for coarse aggregate?

23. Write down the general requirements of mortars?

24. What are the tests prescribed for mortar?

25. Write down the processes in manufacturing of clay bricks?

26. What is meant by efflorescence in bricks? How can it be removed?

27. What is meant by hollow blocks? Mention its applications.

28. State any four advantages of bricks as compared with stones.

29. List the different types of refractory bricks?

30. Give the different classifications of stones, giving an example of each.

31. How will you manufacture concrete blocks? Explain the procedure in detail.

32. Write down the dimensions and tolerances in the concrete blocks according to B.I.S.

33. How will you classify the concrete blocks? Mention its names.

34. What are the usual tests prescribed for concrete blocks?

Subject Name	CONSTRUCTION MATERIALS
Subject Code	CE6401
Regulation	2013
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MA6459 Important Questions NUMERICAL METHODS for Regulation 2013 Anna University

MA6459 Important Questions NUMERICAL METHODS for Regulation 2013 Anna University

Sample for Ma6459 Important Questions:

1. State the condition for convergence of Newton-Raphson method.

2. State the order of convergence of (i) the iteration formula and (ii) the Newton-Raphson.

3. When does Gauss elimination method fail?

4. Sate a sufficient condition for Gauss-Seidel method to converge.

5. How will you find the smallest eigen value of a square matrix, by power method?

6. What are the conditions under which the power method can be applied?

7. When does the power method work satisfactorily?

8. State Fixed point theorem.

9. State Newton’s formula for interpolation.

10. State Newton’s divided difference interpolation formula .

11. State Lagrange’s interpolation formula for unequal intervals.

12. What do you mean by inverse interpolation?

13. write down the formula for the cubic spline polynomial y(x).

14. State any two properties of divided differences.

15. State any two properties of cubic spline function.

16. What do you mean by numerical integration?

17. State Simpson’s 1/3 and 3/8 formulas for numerical integration.

18. In numerical integration, what should be the number of intervals to apply Simpson’s one-third rule and Simpson’s three-eighth rule?

19.State Trapezoidal rule to evaluate a double integral.

20. State Simpson’s 1/3 rule to evaluate a double integral.

21. What is the difference between an initial value problem and a boundary value problem?
22. What do you mean by truncation error and what is the order of truncation error in Taylor’s series method of nth order?

23. Compare Taylor series and Runge-Kutta methods.

24. What do we mean by single step methods and multistep methods?

25. Why the predictor-corrector methods are called so?

26. Compare Runge-Kutta method and predictor corrector methods

27. Write down the Milne’s predictor-corrector formula.

Subject Name	NUMERICAL METHODS
Subject Code	MA6459
Regulation	2013
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BE8255 important questions Basic Electrical Electronics and Measurement Engineering

BE8255 important questions BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING Regulation 2017 Anna University Free Download. BEEME important questions BE8255 Free Pdf Download.

Subject Name	BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING
Subject Code	BE8255
Regulation	2017
File	PDF

Sample BE8255 important questions BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING:

What is meant by charge?
Charge is an electrical property of the atomic particles which matter
consists. The charge of an electron is so small. Charge in motion represents current. The unit of charge is coulomb.

Give short notes on resistor.
It is a property of a substance3 which opposes the flow of electrons. It is denoted by R and its unit is Ohm

Define line currents and phase currents?
The currents flowing in the lines are called as line currents The currents flowing through phase are called phase currents (BE8255 important questions BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING)

What is meant by apparent power?
Apparent power is the product of voltage and current and it is not true power. Unit is VA

What is meant by residual magnetism?
Practically though the generator is not working, without any current
through field winding, the field poles posses some magnetic flux. This is called as residual magnetism.

what is the principle of DC motor?
Whenever a current carrying conductor placed in a magnetic field, it
experiences a mechanical force. (BE8255 important questions BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING)

Write the various losses occurring in DC generator
Copper loss
Iron loss
Mechanical loss

What are the major broad classification of WECS?
There are two broad classification of WECS. They are
i. Horizontal Axis machines and
ii. Vertical Axis machines (BE8255 important questions BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING)

Why are NAND and NOR gates known as universal gates?
The NAND and NOR gates are known as universal gates, since any logic function can be implemented using NAND or NOR gates.

What short notes on DVM?
DVM are measuring instrument ts that convert analog voltage to signals in to digital or numeric readout. (BE8255 important questions BASIC ELECTRICAL ELECTRONICS AND MEASUREMENT ENGINEERING)

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BE8255 important 16 Mark questions Basic Electrical Electronics and Measurement Engineering

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