Automatic Control Systems - Section 1 (6)
Automatic Control Systems - Section 1
| 41. | For a first order system having transfer function |
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the unit impulse response is
| 42. | Assertion (A): Potentiometers can not be used as error detectors in position control systems. Reason (R): The resolution of a potentiometer places an upper limit on its accuracy |
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Answer: Option D Explanation: Potentiometers are used as error detectors. |
| 43. | For the system of the given figure, the damping ratio of closed loop poles is |
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| 44. | If a system is to follow arbitrary inputs accurately the bandwidth should be |
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Answer: Option A Explanation: Arbitrary inputs require large bandwidth. |
| 45. | In the given figure shows pole-zero plot. If steady state gain is 2 the transfer function G(s) is |
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Answer: Option A Explanation: The zero at - 1 gives the term (s + 1) in the numerator. The poles at (- 2 + j1) and (- 2 - j1) give (s2 + 4s + 5) term is the denominator. Gain is 2. |
E0(s) = [I(s)][Z2(s)] or 
| 47. | Whether a linear system is stable or unstable that it |
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Answer: Option A Explanation: Stability is a property of the system only. |
| 48. | For the system in the given figure. The transfer function C(s)/R(s) is |
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Answer: Option C Explanation: Transfer function = (G1 + 1) G2 + 1 = G1 G2 + G2 + 1. |
