### Control System Objectives Part 10

**181 .** If a sinusoidal input voltage with peak amplitude 150 volts and frequency 60 Hz is applied to this network, what is the frequency of the sinusoidal steady state output? **The input frequency 60 Hz.**

**182 .** The root locus of a unity feedback system is shown in Fig. 30. The open loop transfer function is given by**ππ¬(π+π**)**(π+π)**

**183 .** The Bode plot is used to analyze** maximum phase network.**

**184 .** Which one of the following can be extended to systems which are non-linear?** State variable analysis.**

**185 .** **The output of a linear system for a unit step input is given by t2e-t. The transfer function is given byπ(π+π)π**

**186 .** For type 2 system, the velocity error is** zero.**

**187 .** A unity feedback control system with plant 2π (π +1)3 and proportional plus integral controller would require how many state variables for a state model description?** 4.**

**188 .** The Nyquist plot (for positive frequencies) of open loop transfer function is shown in Fig.31. the gain margin is **5.0.**

**189 .** For a transfer function G(s) = s, the Bode plot will be **20 dB/decade and phase shift of Ο/2.**

**90 . ** The unit step response of a linear time invariant can be obtained by **integration of the impulse response.**

**191 .** The open loop transfer function of a unity feedback control system is

G(s) = πΎπ (π +1)(π +5

The range of K for stable operation is **0 to 30.**

**192 .** The system response can be tested better with **unit impulse input signal.**

193 . Well designed first order control systems have a **large negative transfer function pole.**

**194 . ** Match the following:** a-(ii), b-(iii). C-(i), d-(iv)**

**195 . ** Zero initial condition means that the system is **at rest and no energy is stored in any of its components.**

**Question 196 to 198 refer to data given below:**

Feedback control system shown in Fig.33 has k1 and k2 components.

**196 . ** The loop transfer function is**π€π π€ππ+π.**

**197 . ** The control ratio is **π€π π(π+πβππππ) .**

**198 .** The error ratio is **π¬+π©(π+πβππππ) .**

**199 .** Consider the following signal flow graph. How many feedback paths can be identified? **Twelve.**

**200 .** In second order control system the value of the resonant peak will be unity when the damping ratio has a value of **πβπ .**