Code No: G4301/R13
M. Tech. I Semester Supplementary Examinations, December-2016
ELECTRICAL MACHINE MODELING & ANALYSIS
(Common to PE, P&ID, PE&ED, PE&D and EM&D)
Time: 3 hours Max. Marks: 60
Answer any FIVE Questions
All Questions Carry Equal Marks
1. a Describe the modeling of three phase synchronous machine with damper bars. 6M
b Why damper bars are used? Explain its significance. 6M
2. a Explain the basic modeling of three phase induction machine. 6M
b Derive the torque equation of a three phase induction machine. 6M
3. a Explain the transfer function analysis of a separately excited DC motor. 6M
b Explain the mathematical model of a DC series motor. 6M
4. a Explain the method for two phase to three phase transformation. 6M
b Describe some applications where two phase to three phase transformation is 6M
required.
5. a Explain the mathematical modeling of a single phase induction motor. 6M
b Explain the steady state analysis of a single phase induction motor. 6M
6. a What are the commonly used induction machine models? Explain the relative 6M
importance of them.
b Explain the rotor reference frame model of a three phase induction machine. 6M
7. a Derive the state space model of a three phase induction machine. 6M
b Obtain the solution for the state space model of a three phase induction machine. 6M
8. a Derive the voltage equations of a synchronous machine in rotor reference frame. 6M
b Derive the mathematical representation of a synchronous machine. 6M
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