Control Systems MCQ Questions & Answers | ECE

For the flow diagram shown in figure, the transfer function $$\frac{{Y\left( s \right)}}{{R\left( s \right)}}$$  is

The basic element for a pneumatic controller is

A system described by the transfer function $$H\left( s \right) = \frac{1}{{{s^3} + \alpha {s^2} + Ks + 3}}$$     is stable. The constraints on α and K are,

In force current analogy, electrical capacitance is analogous to:

A motion control-system has type-2 plant. A recommended cascade compensation scheme for this system employs.

The state space representation of a linear time invariant system is: \[\mathop {\rm{X}}\limits^. \](t) = AX(t) + Bu(t); Y(t) = CX(t)
What is the transfer function H(s) of the system?

A sensitivity of transfer function $$T = \frac{{{A_1} + k{A_2}}}{{{A_3} + k{A_4}}}$$   with respect to parameter k is given by

When a human being tries to approach an object, his brain acts as:

Two systems are defined by their state veritable equation in time domain dx(t)/dt = Ax(t) + Bu(t) as follows. If the gain equation in this are as given below, which of the following choices is correct?
\[\begin{array}{l} {\rm{A}} = \left[ {\begin{array}{*{20}{c}} { - 2}&1\\ 0&{ - 1} \end{array}} \right],\,{\rm{B}} = \left[ \begin{array}{l} 1\\ 0 \end{array} \right]{\rm{. }}{\rm{. }}{\rm{. }}{\rm{. Equation 1}}\\ {\rm{A}} = \left[ {\begin{array}{*{20}{c}} 0&1\\ { - 1}&0 \end{array}} \right],\,{\rm{B}} = \left[ \begin{array}{l} 0\\ 1 \end{array} \right]{\rm{. }}{\rm{. }}{\rm{. }}{\rm{. Equation 2}} \end{array}\]

If there are sign changes in the first column of Routh's array, the system is