Q.1
Insertion of negative feedback in control system affects:
  • the transient response to vanish uniformly
  • the transient response to decay very fast
  • no change in transient response
  • the transient response decays at slow rate
Q.2
An increase in gain, in most systems, leads to
  • smaller damping ratio
  • larger damping ratio
  • constant damping ratio
  • none of the above
Q.3
Zero initial condition for a system means
  • input reference signal is zero
  • zero stored energy
  • ne initial movement of moving parts
  • system is at rest and no energy is stored in any of its components
Q.4
Which notation represents the feedback path in closed loop system representation
  • e(t)
  • c(t)
  • r(t)
  • s(t)
  • b(t)
Q.5
The initial response when tne output is not equal to input is called
  • Transient response
  • Error response
  • Dynamic response
  • Either of the above
Q.6
Mass, in force-voltage analogy, is analogous to
  • charge
  • current
  • inductance
  • resistance
Q.7
Which of the following will not decrease as a result of introduction of negative feedback?
  • instability
  • bandwidth
  • overall gain
  • distortion
Q.8
Which of the following are the not characteristics of the closed loop systems?
  • it does not compensate for disturbance
  • it reduces the sensitivity of plant-parameter variations
  • it does not involve output measurements
  • it does not has the ability to control the system transient response
Q.9
Conventional control theory is applicable to              systems
  • siso
  • mimo
  • time varying
  • non-linear
Q.10
State space analysis is applicable even if the initial conditions are
  • zero
  • non-zero
  • equal
  • not equal
Q.11
Which among the following are the interconnected units of state diagram representation?
  • scalars
  • adders
  • integrator
  • all of the mentioned
Q.12
Which among the following plays a crucial role in determining the state of dynamic system?
  • state variables
  • state vector
  • state space
  • state scalar
Q.13
Which among the following constitute the state model of a system in addition to state equations?
  • input equations
  • output equations
  • state trajectory
  • state vector
Q.14
State model representation is possible using
  • physical variables
  • phase variables
  • canonical state variables
  • all of the mentioned
Q.15
Which mechanism in control engineering implies an ability to measure the state by taking measurements at output?
  • controllability
  • observability
  • differentiability
  • adaptability
Q.16
According to the property of state transition method, e0 is equal to
  • i
  • a
  • e-at
  • -eat
Q.17
Stability of a system implies that :
  • small changes in the system input does not result in large change in system output
  • small changes in the system parameters does not result in large change in system output
  • small changes in the initial conditions does not result in large change in system output
  • all of the above mentioned
Q.18
Real distinct and negative.
  • center
  • focus point
  • saddle point
  • stable node
Q.19
Real and equal but with opposite sign.
  • center
  • focus point
  • saddle point
  • stable node
Q.20
Pure imaginary pair:
  • centre
  • focus point
  • saddle point
  • stable node
0 h : 0 m : 1 s