One Shot Marathon Series Test - Control Systems

Open loop DC gain for closed loop transfer function having unity feedback is _____. The closed loop transfer function is given as .

DC gain of a transfer function of a system is:

Find the value of the transfer function of the signal flow graph (SFG) given below. (Round off to two decimal point).

A first order system is shown in below figure. The time response to a unit step input is

What is the unit step response of second order system under critically damped condition?

An under damped second order system has damping factor 0.The maximum voltage that the system can achieve when subject to 5 u(t) is ______V.

The transfer function of a unity feedback (type-1) second order system has a pole at (s = – 1). The steady state error (e_ss) and velocity error constant (k_v) will be

(Assumer gain (k = 1) and input is unit ramp)

Which of the following statements is/are correct about Routh Hurwitz criterion-

1. It given number of roots in the right half of s-plane

2. It tells as the exact location of roots.

Consider that in a system loop transfer function, addition of a pole results in the following.

Which of the above are correct?

The closed loop frequency response |M(jω)| versus frequency of a second order prototype system is shown in figure.

Find the rise time of the system.

The open loop transfer function of a unity feedback system is

The gain margin of the system is dB is

The phase margin of a system with the open loop transfer function  is

The phase and magnitude v/s frequency plot shown below for OLTF (approximate)

G(s) H(B)

Find the phase angle error and magnitude error (a) = (0.5)a?

The network for a lag compensator is shown below:

The transfer function of the network is

Which of the following is correct for the system?

A controller is realized using operational amplifier. The transfer function of the controller is

The transfer function represents the

Below figure shows the frequency Response of a lead compensator in which the lead compensator coefficient is _______

Indicate which one of the following transfer functions represents phase lag compensator

Consider a system characterised by the non-homogenous state equation:

Where are states of the system, ‘u’ is the unit-step input function and the initial state is .

Let the zero-state response be given as

Then, find the value of at [Give the answer in two decimal places]

The state variable representation of a system is given by the following equations

y =

If the given system is said to be uncontrollable the value of a should be ______

For the following circuit, write the state equations using V_c and i_L as state variables.

Which of the following is/are the valid property of state transition matrix ?

(i)

(ii)

(iii)

(iv)  (Identity matrix)

Consider the system

The conditions for completer state controllability and complete observability are,

If open loop T.F. of UFB control system is , the value of gain 'K’ for the damping ratio to be 0.707, by taking dominating pole is ______?

Find the transfer function of the closed -loop system as shown in figure ……………….. [up to two decimal point]