ME6505 Dynamics of Machines Question Bank

ME6505 DYNAMICS OF MACHINES Question Bank Regulation 2013 Anna University free download. ME6505 Question Bank DYNAMICS OF MACHINES free pdf download.

Sample ME6505 DYNAMICS OF MACHINES Question Bank:

PART-A (2 Marks)

1. What is free body diagram?

2. Define static force analysis.

3. Differentiate between static and dynamic equilibrium.

4. Define applied and constraint forces.

5. Differentiate between static force analysis and dynamic force analysis.

6. Define inertia force.

7. Define inertia torque.

8. State D’Alembert’s principle.

(ME6505 Dynamics of Machines Question Bank)

9. State the principle of superposition.

10. Define piston effort.

11. Define crank effort and crank-pin effort.

12. What is meant by turning moment diagram or crank effort diagram?

13. Explain the term maximum fluctuation of energy in fly wheel.

14. Define coefficient of fluctuation of energy.

15. Define coefficient of fluctuation of speed.

(ME6505 Dynamics of Machines Question Bank)

16. Define coefficient of steadiness.

17. Why flywheels are needed in forging and pressing operations?

18. What is cam dynamics?

19. Define unbalance and spring surge.

20. Define windup. What is the remedy for camshaft windup?

PART-B (16 Marks) (ME6505 Dynamics of Machines Question Bank)

1. For reciprocating engine, derive the expression for
(i)Velocity and acceleration of the piston
(ii)Angular velocity and angular acceleration of the connecting rod (16)

2. In a reciprocating engine mechanism, if the crank and connecting rod are
300mm and 1m long respectively and the crank rotates at a constant speed of
200r.p.m.Determine analytically,

1. The crank angle at which the maximum velocity occurs and
2. Maximum velocity of piston.
3. Derive the relevant equations. (16)
(i)Deduce the expression for the inertia force in the reciprocating force neglecting
the weight of the connecting rod. (8)

(ME6505 Dynamics of Machines Question Bank)

Subject Name	DYNAMICS OF MACHINES
Subject code	ME6505
Regulation	2013

ME6505 Dynamics of Machines Question Bank Click here to download

ME6505 Dynamics of Machines Syllabus

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ME6505 Dynamics of Machines Important questions

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ME6505 Dynamics of Machines Important questions

ME6505 DYNAMICS OF MACHINES Important questions Regulation 2013 Anna University free download. ME6505 Important questions DYNAMICS OF MACHINES free pdf download.

Sample ME6505 DYNAMICS OF MACHINES Important questions:

1. Distinguish between space diagram and free body diagram

Space Diagram is a graphical representation of the system. It generally shows the shape and size of the system, the weight, the externally applied loads, the connection and the supports of the system. Free body diagram is a sketch of the isolated or free body which shows all the pertinent weight forces, the externally applied loads, the reaction from its supports and the connections acting upon
it by the removed elements.

(ME6505 Dynamics of Machines Important questions)

2. Define Static force analysis.

If components of a machine accelerate, inertia is produced due to their masses. However the magnitudes of these forces are small compared to externally applied loads. Hence the inertia effects due to masses are neglected. Such an analysis is known as static force analysis.

(ME6505 Dynamics of Machines Important questions)

3. Define force and applied force.

Force is a pull or push, which acts on the body changes or tends to change the state of rest or uniform motion of the body. The external force acting on a system of body from outside the system are called as applied forces.

4. Give any 3 advantages of free body diagram

?They assist in seeing and understanding all aspects of problem
?They help in planning the approach to the problem
?Theymake mathematical relations easier to the problem.

(ME6505 Dynamics of Machines Important questions)

5. When will the three force member is in equilibrium.

The resultant of forces is zero.
The line of action of the forces intersect at a point.

6. When will the two force member is in equilibrium.

?The two forces are of same magnitude.
? The forces acting along same line.
? The forces are in opposite direction.

(ME6505 Dynamics of Machines Important questions)

Subject Name	DYNAMICS OF MACHINES
Subject code	ME6505
Regulation	2013

ME6505 Dynamics of Machines Important questions Click here to download

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ME6505 Dynamics of Machines Question Bank

ME6504 METROLOGY AND MEASUREMENTS Important questions

ME6504 METROLOGY AND MEASUREMENTS Important questions Regulation 2013 Anna University free download. ME6504 Important questions METROLOGY AND MEASUREMENTS free pdf download.

Sample ME6504 METROLOGY AND MEASUREMENTS Important questions:

PART-A (2 MARKS)

1. What are the uses of measurement?

2. What is legal metrology?

3. What are the objectives of metrology

4. What are the basic components of a measuring system?

5. Distinguish between Line standard and End standard.

6. Define the term Sensitivity of an instrument.

(ME6504 METROLOGY AND MEASUREMENTS Important questions)

7. Differentiate between precision and accuracy.

8. Define the term reliability.

9. Give any four methods of measurement.

10. Give classification of measuring instruments.

11. Define Span.

12. Distinguish between repeatability and reproducibility.

13. Define error. (ME6504 METROLOGY AND MEASUREMENTS Important questions)

14. Distinguish between static and random error?

15. What are the sources of error?

16. Write short note on “Systematic errors”.

17. What are the factors affecting the accuracy of the measuring system?

18. Write short notes on the classification of error

19. What is the role of N.P.L

20. Explain the different types of units (ME6504 METROLOGY AND MEASUREMENTS Important questions)

PART-B (16 MARKS)

1. Explain the need for measurement

2. Differentiate between precision and accuracy with suitable example.

3. State the requirements for an instrument to measure accurately.

4. What are the various possible sources of errors in measurements? What do you understand by systematic error and random errors? (ME6504 METROLOGY AND MEASUREMENTS Important questions)

5. Explain in detail various types of errors that may arise in engineering measurements and the ways to control it.

6. Explain the different types of standards.

7. Explain in detail the legal metrology

8. What the various standards that are being followed in India with respect to metrology

9. Explain the need of precision and accuracy in metrology

10. Explain the general measurement system with sketch (ME6504 METROLOGY AND MEASUREMENTS Important questions)

Subject Name	Metrology and Measurements
Subject code	ME6504
Regulation	2013

ME6504 Metrology and Measurements Important questions Click here to download

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ME6503 Design of Machine Elements Important questions

ME6503 Design of Machine Elements Important questions Regulation 2013 Anna University free download. Design of Machine Elements ME6502 Important questions pdf free download.

Sample ME6503 Design of Machine Elements Important questions:

1. Define factor of safety.

Factor of safety (FOS) is defined as the ratio between the maximum stress and
working stress.

2. What are the various phases of design process?

• Recognition of need
• Definition of problem
• Synthesis
• Analysis and Optimization
• Evaluation
• Presentation

(ME6503 Design of Machine Elements Important questions)

3. List out the factors involved in arriving at factor of safety.

• Material properties
• Nature of load
• Presence of localized stress
• Presence of initial stress
• Mode of failure

4. Define Endurance limit.

Endurance limit is the maximum value of completing reversed stress that can sustain an infinite number (106) of cycles without failure.

(ME6503 Design of Machine Elements Important questions)

5. What are the factors affecting endurance strength of a material?

• Load
• Surface finish
• Size
• Temperature
• Impact
• Reliability

6. What is eccentric load and eccentricity?

An external load, whose line of action is parallel but does not coincide with the centroidal axis of the machine component, is known as an eccentric load. The distance between the centroidal axis of the machine component and the eccentric load is called eccentricity. (Ex.) C-clamps, Punching machines, brackets, offset connecting links etc.

(ME6503 Design of Machine Elements Important questions)

8. What are the factors affecting selection of material for machine element?

a. Load applied
b. Purpose and operating conditions of the part.
c. Suitability for manufacture.
d. Minimum weight and optimal size
e. Availability and cost.

9. Define Resilience.

Resilience is the property of the material to absorb energy and to resist shock and
impact loads. This property is essential for spring materials.

10. Define the Morphology of Design.

Morphology of design consisting of problem formulation analysis search for alternative an evaluation decision taking and specification of the solution.

(ME6503 Design of Machine Elements Important questions)

Subject Name	Design of Machine Elements
Subject code	ME6503
Regulation	2013

ME6502 Design of Machine Elements Important questions Click here to download

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ME6502 Heat and Mass Transfer Important questions

ME6502 Heat and Mass Transfer Important questions Regulation 2013 Anna University free download. Heat and Mass Transfer ME6502 Important questions pdf free download.

Sample ME6502 Heat and Mass Transfer Important questions:

PART – A

1. What is Fourier’s Law of heat conduction?

2. What is temperature gradient?

3. What is coefficient of Thermal conductivity?

4. Give some examples of heat transfer in engineering.

6. Define Temperature field. (ME6502 Heat and Mass Transfer Important questions)

7. Define heat flux.

8. Define thermal Diffusivity.

9. What is Lap lace equation for heat flow?

10. What is Poisson’s equation for heat flow?

11. What critical radius of insulation; (ME6502 Heat and Mass Transfer Important questions)

12. Give examples for initial’&; boundary conditions.

13. What is a Fin?

14. Define efficiency of the fin.

15. Define effectiveness of the fin.

16. Give examples of use of fins in various engineering applications.

17. What is meant by Transient heat conduction? (ME6502 Heat and Mass Transfer Important questions)

18. Give governing differential equation for the one dimensional transient heat flow.

19. What is Biot number?

20. What is Newtonian heating or cooling process?

21. Give examples for Transient heat transfer.

22. What is meant by thermal resistance?

23. What is meant by periodic heat transfer?

24. What are Heisler chart? (ME6502 Heat and Mass Transfer Important questions)

25. What is the function of insulating materials?

PART – B

1. A pipe consists of 100 mm internal diameter and 8mm thickness carries steam at 170°C. The convective heat transfer coefficient on the inner surface of pipe is 75 W/m2C. The pipe is insulated by two layers of insulation. The first layer of insulation is 46 mm in thickness having thermal conductivity of 0.14 W/m°C. The second layer of insulation is also 46 mm in thickness having thermal conductivity of 0.46 W/m°C. Ambient air temperature = 33°C. The convective heat transfer coefficient from the outer surface of pipe = 12 W/m2C. Thermal conductivity of
steam pipe = 46 W/m°C. Calculate the heat loss per unit length of pipe and determine the interface temperatures. Suggest the materials used for insulation.

(ME6502 Heat and Mass Transfer Important questions)

Subject Name	Heat and Mass Transfer
Subject code	ME6502
Regulation	2013

ME6502 Heat and Mass Transfer Important questions Click here to download

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ME6501 Computer Aided Design Important questions

ME6501 Computer Aided Design Important questions Regulation 2013 Anna University free download. Computer Aided Design ME6501 Important questions pdf free download.

Sample ME6501 Computer Aided Design Important questions:

1.Define the term Product Cycle.

In the conventional product cycle,after the design of product , the part drawing are released for production.The production department then takes appropriate actions for the manufacture of the product. It is called product cycle.

2.What is design process ?

The design is the act of devising an original solution to a problem by a combination of principles,resources and product in design.The design process is the pattern of activities that is followed by the designer in arriving at the solution of technological problem.

(ME6501 Computer Aided Design Important questions)

3.What are the types of models of the design process ?

Shigley model
Paul and Beitz model
Ohsuga model
Earle model

4.What are the step involved in Shigley model ?

Recognition of need
Definition of problem
Synthesis
Analysis and optimization
Evaluation
Presentation

(ME6501 Computer Aided Design Important questions)

5. What are the four main phases of Phal and Beitz model?

Clarification of the task
Conceptual design
Embodiment design
Detail design

6.What are the six steps proposed by Earle for the design process?

Problem Identification
Preliminary Ideas
Problem refinement
Analysis
Decision
Implementation

(ME6501 Computer Aided Design Important questions)

7.What are the data’s needs to get for problem identification?

Fixed data
Opinion surveys
Historical records
Personal observation
Experimental data

8.What is Sequential Engineering?

Sequential Engineering is also called as “across the wall” method. Each segment of the product development team complete their tasks in isolation and passes over the documents to the next segment.There is no interaction among the product development groups.

(ME6501 Computer Aided Design Important questions)

9. What is Concurrent Engineering ?

Concurrent Engineering is also called as parallel engineering . Concurrent Engineering is an approach used in product development in which the function of design engineering, manufacturing engineering and other function are integrated to reduce the time required to bring a new product to the market.

10.Define CAD.

CAD is defined the use of digital computer for creation, modification, analysis and optimization of design.

(ME6501 Computer Aided Design Important questions)

Subject Name	Computer Aided Design
Subject code	ME6501
Regulation	2013

ME6501 Computer Aided Design Important questions Click here to download

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EE6351 ELECTRICAL DRIVES AND CONTROL Important questions  

EE6351 ELECTRICAL DRIVES AND CONTROL Important questions Regulation 2013 Anna university free download. EE6351 Important questions ELECTRICAL DRIVES AND CONTROL free pdf download.

Sample EE6351 ELECTRICAL DRIVES AND CONTROL Important questions:

1. What is a controlled rectifier?
A controlled rectifier is a device which is used for converting controlled dc power
from a control voltage ac supply.

2. What is firing angle?
The control of dc voltage is achieved by firing the thyristor at an adjustable angle
with respect to the applied voltage. This angle is known as firing angle.

3. Give some applications of phase control converters.

(EE6351 ELECTRICAL DRIVES AND CONTROL Important questions)

4. What is the main purpose of free wheeling diode?

6. What is natural or line commutation?
The commutation which occurs without any action of external force is called natural or line commutation.

7. What is forced commutation?
The commutation process which takes place by the action of an external force is
called forced commutation.

8. What is a chopper?
A chopper is essentially an electronic switch that turns on the fixed-voltage dc source for a short time intervals and applies the source potential to motor terminals in series of pulses.

(EE6351 ELECTRICAL DRIVES AND CONTROL Important questions)

A full converter is a tow quadrant converter in which the voltage polarity of the
output can reverse, but the current remains unidirectional because of unidirectional thyristors.

5. What is a full converter?
Free wheeling diode is connected across the motor terminal to allow for the
dissipation of energy stored in motor inductance and to provide for continuity of motor current when the thyristors are blocked. Phase control converters are used in the speed control of fractional kW dc motors as well as in large motors employed in variable speed reversing drives for rolling mills. with
motors ratings as large as several MW‟s.

(EE6351 ELECTRICAL DRIVES AND CONTROL Important questions)

Subject Name	Electrical Drives and Control
Subject Code	EE6351
Regulation	2013
File	PDF

EE6351 ELECTRICAL DRIVES AND CONTROL Important questions Click Here to download 

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ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions

 ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions Regulation 2013 Anna University free download. MANUFACTURING TECHNOLOGY 1 me6302 Important Questions free pdf download.

Sample ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions:

1.Name any four types of commonly used patterns

2.What is the merit of CO2 process?

3.State the essential properties of mounding sand

4. Give any two merits and demerits of investment casting process

5. Mention any two merits and demerits of die casting

(ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions)

7. List out any four defects in casting

8. What is meant by split pattern

9. Define the term mould

10. What are the defects caused by low pouring temperature?

11. What is meant by match plate pattern making?

12. How will you calculate grain fineness number?

(ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions)

13. How patterns differ from casting?

14. What are the tests carried out to determine the quality of casting?

15. What are the functions of riser?

16. What are core prints?

17. What are the functions of gating and risering?

18. What is the composition of moulding sand?

(ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions)

19. What is the function of core?

20. Which process is called “Lost wax process”?Why?

PART-B (16 MARKS)

1. i. Discuss the properties of moulding sand

ii. What are the various moulding methods, explain them

2. i. Explain the working principle of investment casting

ii. Discuss the casting defects and their inspection methods

3. i. What are the pattern making allowances and briefly explain them

(ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions)

ii. Describe centrifugal casting process

4. i. Describe the shell moulding process

ii. Explain the ceramic moulding process and state its merits and demerits

5. i. What are the factors which govern the selection of a proper material for pattern making?

ii. What are the specific advantages of match plate patterns? Explain how they are used for making mould

6. .i. Classify the types of patterns and sketch any three of them

ii. What is core and explain how to make a core?

(ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions)

Subject Name	MANUFACTURING TECHNOLOGY – I
Subject Code	ME6302
Regulation	2013
File	PDF

ME6302 MANUFACTURING TECHNOLOGY 1 Important Questions Click Here to download

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CE6451 FLUID MECHANICS AND MACHINERY Important questions

CE6451 FLUID MECHANICS AND MACHINERY Important questions Regulation 2013 Anna University free download. FLUID MECHANICS AND MACHINERY CE6451 Important questions free pdf download.

Sample CE6451 FLUID MECHANICS AND MACHINERY Important questions:

PART A

1. Define viscosity?

2. What is compressibility?

3. Define dynamic viscosity?

4. What is cause for viscosity?

5. Give some example of surface tension ?

6. Define vapour pressure?

7. Define vapour pressure?

(CE6451 FLUID MECHANICS AND MACHINERY Important questions)

8. Give the Euler‘s equation of motion?

9. What is bernouillie‘s equation for real fluid?

10. State momentum equation and Impulse momentum equation?

11. State moment of momentukm equation?

12. State Bernouillie‘s theorem?

13. Differentiate steady and unsteady flow?

14. State the assumptions in Bernoulli‘s equation.

PART B (CE6451 FLUID MECHANICS AND MACHINERY Important questions)

1) a) Derives Euler‘s Equation of Motion and proves the Bernoulli‘s equation. (12 Marks)

b) Define the terms: i) Steady and unsteady flows ii) Specific weight (4 Marks)

2) a) Define the terms: i) Kinematics of flow ii) Uniform and non-uniform flows iii) Rotational and irrotational flows (6 Marks)

3) a) Derive the three dimensional Continuity equation. (10 Marks)
b) Define the following i) Compressibility ii) Vapour pressure
iii) Capillarity (6Marks)

4) State the momentum equation. How will you apply momentum equation for determining the force exerted by a flowing fluid on a pipe bend? (12 Marks)

b) Define Moment of Momentum equation. Where this equation is used? (4 Marks)

PART A (CE6451 FLUID MECHANICS AND MACHINERY Important questions)

1. What do you mean by the term ‗Boundary Layer‘?

2. What is Laminar sub-layer?

3. Define Momentum thickness in Boundary Layer concept.

4. Sketch the development of Boundary layer over a flat plate.

5. Define the term ‗Turbulence‘

6. Define: ‗Hydraulic Gradient Line‘

7. Define: ‗Total gradient Line‘

8. What is the expression for head loss due to friction in Darcy formula?

(CE6451 FLUID MECHANICS AND MACHINERY Important questions)

9. What are the factors to the determined when viscous fluid flows through the circular pipe ?

10. What do you understand by the terms a) major energy losses , b) minor energy losses?

11. Give an expression for loss of head due to sudden enlargement of the pipe :-

12. Give an expression for loss of head due to an obstruction in pipe

13. What are the basic educations to solve the problems in flow through branched pipes?

14. What is Dupuit‘s equation ?

(CE6451 FLUID MECHANICS AND MACHINERY Important questions)

Subject Name	FLUID MECHANICS AND MACHINERY
Subject Code	CE6451
Regulation	2013
File	PDF

CE6451 FLUID MECHANICS AND MACHINERY Important questions Click Here to download 

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 ME6301 ENGINEERING THERMODYNAMICS Important questions

ME6301 Engineering Thermodynamics Important questions Regulation 2013 Anna University free download. ENGINEERING THERMODYNAMICS ME6301 Important questions pdf free download.

Sample ME6301 ENGINEERING THERMODYNAMICS Important questions:

1. Name the forms of energy transfer across the boundary of a thermodynamic system.

2. State the thermodynamics definition of work.

3. Define a quasi-equilibrium process.

4. Define intensive and Extensive properties. Give examples.

5. What is the state postulate ?

(ME6301 Engineering Thermodynamics Important questions)

6. What is zeroth law of thermodynamics ?

7. When does the concept of continuum become invalid ?

8. In which type of system neither mass nor energy is allowed to cross the boundary.

(ME6301 Engineering Thermodynamics Important questions)

9. What is meant by thermodynamic equilibrium?

10. What is meant by a control surface?

11. What is meant by microscopic and macroscopic approach?

12. Universal gas constant = Characteristic Gas constant Molecular weight (T/F)

13. What is an open system? Give examples.

14. Define a closed system. Give example

15. What is the work done in compressing a spring of stiffness 500 N/cm by 2 cm?
[1 kJ]

16. An electric water with a resistance of 50 Ohms heater is connected across a power supply of 240 Volt for a period of 1 hour.
a) Determine the work done by the power source on the heater.
b) How many units of electricity are consumed?
[5184 kJ; 1.44 k Whr]

(ME6301 Engineering Thermodynamics Important questions)

17. A gas is contained in a piston cylinder arrangement as given in the Figure 2.28.Initial volume of the gas is 0.5 m3. It is compressed from 1 bar to 10 bar such that the temperature remains constant. Find the final volume and work done.
[0.05 m3 ;115.13 kJ]

18. Air expands from 0.1 m3 to 0.23 m3 at a constant temperature of 50oC. Calculate the work done per kg of air. Rair  0.287 kJ/kgK.
[77.2 kJ]

19. Oxygen contained in a cylinder fitted with a piston expands in a quasistatic process according to the law pV1.5 constant. The initial pressure, temperature and volume are 5 bar, 300 k and 0.05 m3. After expansion, the pressure is 2 bar.
Find the following :
a. Final volume
b. Final temperature
c. Work done
[0.0921 m3 ; 221 K ; 13.16 kJ]

20. Air is compressed adiabatically from 0.92 m3 to 0.29 m3 in a piston cylinder arrangement. Taking its initial pressure and temperature as 103 kPa and 300 k respectively, find the work done. Also find the final temperature.

Subject Name	ENGINEERING THERMODYNAMICS
Subject Code	ME6301
Regulation	2013
File	PDF

ME6301 Engineering Thermodynamics Important questions Click Here to download

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