Control System II Set 3 MCQs

Q1 | The transfer function of a LTI system is given as 1/(s+1). What is the steady-state value of the unit-impulse response?

0

1

2

infinite

Q2 | The values of the characteristic equation is given by:

eigen values

state matrix

eigen vector

none of the mentioned

Q3 | The state variable representation is preferred

to increase the sensitivity to the plant parameter variations

to reduce the sensitivity to the plant parameter variations

to make a plant simple and to control the transient response

none of the above

Q4 | With the knowledge of state space representation the transfer function of the system

can be determined partly

can be determined completely

cannot be determined

none of the above

Q5 | Which among the following are the interconnected units of state diagram representation?

scalars

adders

integrators

all of the above

Q6 | Which among the following controls the speed of D.C. motor?

galvanometer

gauss meter

potentiometer

tachometer

Q7 | State model representation is possible using _________

. physical variables

. phase variables

canonical state variables

all of the above

Q8 | Which among the following constitute the state model of a system in addition to state equations?

. input equations

. output equations

state trajectory

state vector

Q9 | Which among the following plays a crucial role in determining the state of dynamic system?

. state variables

state vector

state space

state scalar

Q10 | What is Eigen value?

a vector obtained from the coordinates

a matrix determined from the algebraic equations

a scalar associated with a given linear transformation

it is the inverse of the transform

Q11 | Let us consider a 3×3 matrix A with Eigen values of λ1, λ2, λ3 and the Eigen values of A-1 are?

λ1, λ2, λ3

1/λ1,1/λ2,1/λ3

-λ1, -λ2, -λ3

λ1, 0, 0

Q12 | The Eigen values of a 3×3 matrix are λ1, λ2, λ3 then the Eigen values of a matrix A3 are __________

λ1, λ2, λ3

1/λ1,1/λ2,1/λ3

λ31,λ32,λ33

1, 1, 1

Q13 | State space analysis is applicable even if the initial conditions are _____

zero

non-zero

equal

not equal

Q14 | According to the property of state transition method, e0 is equal to _____

i

a

e-at

-eat

Q15 | Which mechanism in control engineering implies an ability to measure the state by taking measurements at output?

controllability

observability

differentiability

adaptability

Q16 | State model representation is possible using _________

physical variables

phase variables

canonical state variables

all of the mentioned

Q17 | Which among the following constitute the state model of a system in addition to state equations?

input equations

output equations

state trajectory

state vector

Q18 | Which among the following are the interconnected units of state diagram representation?

scalars

adders

integrator

all of the mentioned

Q19 | Which among the following is a unique model of a system?

transfer function

state variable

block diagram

signal flow graphs

Q20 | State model is generally not suitable for measuring:

investigation of system properties

evaluation of time response

real variables

both a and b

Q21 | ______________ are the techniques for converting general state models into canonical one.

observable

controllable

diagoanlization

cannonical

Q22 | The diagonalizing matrix is also known as:

eigen matrix

modal matrix

constant matrix

state matrix

Q23 | A system is said to be_____________ if it is possible to transfer the system state from any initial state to any desired state in finite interval oftime.

controllable

observable

cannot be determined

controllable and observable

Q24 | A system is said to be_________________ if every state can be completely identified by measurements of the outputs at the finite time interval.

controllable

observable

cannot be determined

controllable and observable

Q25 | Kalman’s test is for :

observability

controllability

optimality

observability and controllability