My Profile
Active Members
TodayLast 7 Days
more...
Awards & Gifts
Online Exams
Fresher Jobs
Our fresher job section is exclusively for fresh graduates! Find jobs for freshers in major Indian
cities including Bangalore, Chennai, Hyderabad, Pune or Kochi
Resources
Find educational articles, blogs, discussion threads and other resources.
Colleges
Find details about any college in India or search for courses.
|
Download Model question papers & previous years question papers
|
Posted By: Sriram Member Level: Diamond Posted Date: 18 Jun 2008
|
2006 Andhra Pradesh State Jawaharlal Nehru Technological University B.Tech COMPUTER AIDED DESIGN OF ELECTRICAL MACHINES Question paper
Code No: NR410208 NR
IV B.Tech I Semester Supplementary Examinations, November 2006
COMPUTER AIDED DESIGN OF ELECTRICAL MACHINES
(Electrical & Electronic Engineering)
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Explain Davidon-Fletcher -Powell method with the help of flow chart. [16]
2. (a) Derive the output equation for the armature design of a DC machine & Explain
how values of “D” & “L” are determined.
(b) Explain how Commutator & brushes of a DC machine are designed? [8+8]
3. Explain the important variables involved in design of a Core Type Power Transformer
& Indicate their permissible values .How they affect the optimal design?
[16]
4. (a) Compare design aspects for Shell type Power & Distribution Transformers.
(b) What is meant by Stepped core in a transformer? Describe available choices
with help of sketches. [8+8]
5. How do you formulate design equations of 3-Ph Salient-pole Alternator? Illustrate
with an example. [16]
6. Draw the developed diagram of the stator winding of a 3-ph, 4 pole, Alternator
The winding is of Lap type, with double layer,with a phase spread of 600. The
winding is short pitched by one slot. Assume Slots/pole/phase=3. [16]
7. (a) What is meant by Specific Magnetic & Electrical loadings applicable to 3-Ph
Induction-Motors. What are the advantages & disadvantages if higher or lower
values are used?
(b) Discuss about various shapes of Stator slots in a 3-Ph Induction-Motor. [8+8]
8. (a) Write the equations for Rotor current in a Slip-ring rotor of a 3-Ph Induction-
Motor. Write a computer program in “C” for Calculation of the same.
(b) Write the equation for number of turns/phase in the wound rotor of 3-Ph
Induction-Motor? Write a computer program in “C” for Calculation of the
same. [8+8]
1 of 1
Return to question paper search
|
|
|
Submit Previous Years University Question Papers and make money from adsense revenue sharing program
Are you preparing for a university examination? Download model question papers
and practise before you write the exam.
|
Watch TV Channels
|