ASE 370L - Practice Final 2008

# ASE 370L - Practice Final 2008 - FINAL ASE370LFlight...

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FINAL ASE370L–Flight Control Systems Dr. Robert H. Bishop May 10, 2008 CIRCLE THE BEST ANSWER 1. Control engineering is applicable to which felds oF engineering? (a) Mechanical and aerospace (b) Electrical and biomedical (c) Chemical and environmental (d) All oF the above 2. Complete the Following sentence: An open-loop control system utilizes an actuating device to control a process . (a) without using Feedback. (b) using Feedback. (c) in engineering design. (d) in engineering synthesis. 3. Complete the Following sentence: Control oF an industrial process by automatic rather than manual means is oFten called . (a) negative Feedback. (b) automation. (c) a design gap. (d) a specifcation. 4. Early applications oF Feedback control include which oF the Following? (a) Water clock oF Ktesibios (b) Watt’s ±yball governor (c) Drebbel’s temperature regulator (d) All oF the above 5. Important modern applications oF control systems include which oF the Following? (a) ²uel-e³cient and saFe automobiles (b) Autonomous robots (c) Automated manuFacturing (d) All oF the above

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Consider the block diagram in Figure 1 for Problems 6 and 7. + R(s) Y(s) s 2 + 10 s +5 2 0 Figure 1: Unity feedback system for Problems 6 and 7. 6. The closed-loop transfer function T ( s ) = Y ( s ) /R ( s ) is: (a) T ( s ) = 50 s 2 +5 s +50 (b) T ( s ) = 20 s 2 +10 s +25 (c) T ( s ) = 50 s 2 +5 s +56 (d) T ( s ) = 20 s 2 +10 s - 15 7. The closed-loop unit step response is: (a) y ( t ) = 20 25 + 20 25 e - 5 t t 2 e - 5 t (b) y ( t ) = 1 + 20 te - 5 t (c) y ( t ) = 20 25 20 25 e - 5 t 4 te - 5 t (d) None of the above 8. Consider the di±erential equation ¨ y + 2 ˙ y + y = u where y (0) = ˙ y (0) = 0 and u ( t ) is a unit step. The poles of this system are: (a) s 1 = 1, s 2 = 1 (b) s 1 = 1 j , s 2 = 1 j (c) s 1 = 1 , s 2 = 2 (d) None of the above 9. Consider a system represented by the block diagram in Figure 2. + + + R(s)
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ASE 370L - Practice Final 2008 - FINAL ASE370LFlight...

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