EE2253 CONTROL SYSTEM IMPORTANT QUESTION FOR APRIL/MAY 2013
UNIT 1
1. Explain the TF of armature and field controlled DC motor. (16)2. Problem from mechanical translational system(analogy of force- voltage and force- current) (16)
3. Problem from block diagram (8 )
4. Problem from signal flow graph (8)
Unit 2
1. Explain servomotors and its types (16)2. Derive the time response of
- undamped
- underdamped
- critically damped and over damped
second order system for unit step input (16)
3. Derive the expression for time domain specifications (16)
4. Time domain specification problems(8)
Unit 3
1. Derive the frequency domain specifications of second order system (16)
2. Problem from bode plot determining phase margin,gain margin,determination of k value,gain and phase cross over frequency( any 2 ) (16)
3. Problem from polar plot (same as bode plot )(16)
4. Explain frequency domain specifications (8)
5. Nyquist plot problem
Unit-4
1. Explain the location of poles on s-plane for stability (16)
2. Problems from routh Hurwitz criterion (8)
3. Problems to determine gain and phase cross over frequency, gain and phase margin from given TF (16)
4. Problems from root locus (16)
5. Nyquist stability problems(same in 3rd unit)
Unit - 5
1. Derive the realisation of electrical network, frequency response, determination of maximum phase lag and max. Lag angle for
a) lag compensator (16)
b) lead compensator (16) (separate questions)
2. problems from lag compensator
CREDITS: Mr. BALASUBRAMANIAN , PROCESSOR ,EEE DEP.