MEEPE204 Modeling & Analysis of Electrical Machines M.Tech Model Question Paper : mgu.ac.in

Name of the University : Mahatma Gandhi University
Department : Electrical and Electronics Engineering
Degree : M.Tech
Subject Code/Name : MEEPE 204/Modeling And Analysis Of Electrical Machines
Sem : II
Website : mgu.ac.in
Document Type : Model Question Paper

Download Model/Sample Question Paper :
Set I : https://www.pdfquestion.in/uploads/mgu.ac.in/5288-1-MEEPE%20204%20Modeling%20and%20Analysis%20of%20Electrical%20Machines%20-set1.doc
Set II : https://www.pdfquestion.in/uploads/mgu.ac.in/5288-2-MEEPE%20204%20Modeling%20and%20Analysis%20of%20Electrical%20Machines%20-set2.doc

MGU Analysis of Electrical Machines Question Paper

M.TECH. Degree Examination :
Branch : Electrical and Electronics Engineering
Specialization – Power Electronics

Related : MGU MEEPE203 Electrical Energy Conservation & Management M.Tech Model Question Paper : www.pdfquestion.in/5287.html

Paper – I

Second Semester :
MEEPE 204 Modeling And Analysis Of Electrical Machines. :
(Regular – 2011Admission onwards)
Time: Three hours
Max. Marks: 100

Answer all Questions. :
I (a) Explain the function of magnetic coupling field in an electromechanical energy conversion device. [10 marks]
(b) Derive the expression for stored magnetic field energy in a doubly-excited system. [15 Marks]
OR
(c) Derive the expressions for mechanical work done and electromagnetic force in the case of a singly excited system. [25 Marks]

II Derive an expression for the air-gap MMF in a 2-pole, 3-phase, Y-connected salient pole synchronous machine. [25 marks]
OR
Derive the voltage and torque equations of a d.c.machine. [25 Marks]

III Derive the induction machine model in arbitrarily rotating reference frame. [25 Marks]
OR
Draw the arbitrary reference -frame equivalent circuits of a 3-phase, symmetrical induction machine using voltage equations in arbitrary reference –frame variables. [25 Marks]

IV For a 2-pole, 3-phase, Y-connected, salient –pole synchronous machine, derive the voltage equations in machine variables and in arbitrary reference- frame variables. [25 Marks]
OR
Draw the equivalent circuits of a 2-phase unsymmetrical induction machine using voltage equations in stationary reference-frame variables. [25 Marks]

Paper – II

Answer all questions :
I (a) Derive the energy balance equation in an electromechanical energy conversion device. [10 Marks]
(b) Derive the expressions for stored magnetic energy and co-energy in a singly excited system. [15 Marks]
OR
(c) Derive the expressions for stored magnetic energy and electromagnetic torque in the case of a doubly excited system. [25 Marks]

II Derive the self and mutual inductances of a 2-pole, 3-phase Y-connected, symmetrical synchronous machine. [25 Marks]
OR
Derive the self and mutual inductances of a 2-pole, 3-phase Y- connected symmetrical induction machine. [25 Marks]

III For a 2-pole, 3-phase Y-connected symmetrical induction machine, derive voltage and torque equations in machine variables. [25 Marks]
OR
(a) Write short notes on :
Reference-frame theory, and
Commonly used reference frames. [10 Marks]
(b) Derive the stator reference frame model of an induction machine. [15 Marks]

IV Draw the equivalent circuits of a 3-phase synchronous machine using voltage equations in rotor reference- frame variables. [25 Marks]
OR
(a) For a 2-phase unsymmetrical induction machine, derive the voltage equation in machine variables. [15 Marks]
(b) Draw and explain the equivalent circuit of a single –phase induction machine. [10 Marks]

M.Tech. Degree Examination :
Branch : Electrical and Electronics Engineering
Specialization – Power Electronics

Paper – III

Second Semester
MEEPE 205-1 : Fuzzy Systems (Elective III) (Regular – 2011Admission onwards)
Time : Three hours
Max. Marks : 100

1. (a)Define fuzzification and defuzzification. (5 Marks)
(b) For the fuzzy sets shown, obtain the defuzzified output by (20 Marks) Centroid method.
2. (a) Explain the important methods for defuzzification with an example. (20 Marks)
(b)Define membership functions in fuzzy systems. (5 Marks)

3. (a) Describe
(i) Mamdani’s Fuzzy Inference method
(ii) Takagi Sugeno Inference method (10 Marks)
(b) Define Lambda cuts for fuzzy relations. OR

4. (a) Define
(i) Linguistic variable
(ii) Universe of discourse (10 Marks)
(b) With a block schematic explain Fuzzy Inference Systems. (15 Marks)

5. Consider the nonlinear mapping y=10 sinx. Develop a fuzzy rule based system using 6 fuzzy rules to approximate the output y . Let the universe of discourse for input variable x be [-180 , 180] and the output variable y be [-10, 10]. Use the graphical inference method. (25 Marks)
OR
6. Design a fuzzy controlled air conditioner. (25 Marks)

7. (a) Write notes on Neuro fuzzy systems. (10 Marks)
(b).Explain nonlinear fuzzy modeling using Batch Least Square algorithm.
(15 Marks)
OR

8. (a) Write notes on Fuzzy genetic algorithms. (10 Marks)
(b).Explain nonlinear fuzzy modeling using gradient method. (15 Marks)