Q.1
Servomotor:
  • armature controlled fhp dc motor
  • a pair of synchronous transmitter and control transformer
  • tach generator
  • amplidyne
Q.2
The addition of open loop zero pulls the root loci towards:
  • the left and therefore system becomes more stable
  • the right and therefore system becomes unstable
  • imaginary axis and therefore system becomes marginally stable
  • the left and therefore system becomes unstable
Q.3
If root loci plots of a particular control system do not intersect the imaginary axis at any point, then the gain margin of the system will be:
  • 0
  • 0.707
  • 1
  • infinite
Q.4
When the number of poles is equal to the number of zeroes, how many branches of root locus tends towards infinity?
  • 1
  • 2
  • equal to number of zeroes
Q.5
When the number of poles is equal to the number of zeroes, how many branches of root locus tends towards infinity?
  • 1
  • 2
  • equal to number of zeroes
Q.6
System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial condition
  • -1b+d
  • c(zi-a)-1
  • (zi-a)-1z
  • (zi-a)-1
Q.7
System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial condition
  • -1b+d
  • c(zi-a)-1
  • (zi-a)-1z
  • (zi-a)-1
Q.8
State space analysis is applicable for non- linear systems and for multiple input and output systems.
  • true
  • false
Q.9
State space analysis is applicable for non- linear systems and for multiple input and output systems.
  • true
  • false
Q.10
When human being tries to approach an object, his brain acts as,
  • an error measuring device
  • a controller
  • an actuator
  • an amplifier
Q.11
For two-phase AC servomotor, if the rotor’s resistance and reactance are respectively R and X, its length and diameter are respectively L and D then,
  • x/r and l/d are both small
  • x/r is large but l/d is small
  • x/r is small but l/d is large
  • x/r and l/d are both large
Q.12
Complex conjugate pair:
  • center
  • focus point
  • saddle point
  • stable node
Q.13
A transfer function of the system does not have pole-zero cancellation? Which of the following statements is true?
  • system is neither controllable nor observable
  • system is completely controllable and observable
  • system is observable but uncontrollable
  • system is controllable and unobservable
Q.14
Consider a system if represented by state space equation and x1 (t) =x2 (t), then the system is:
  • controllable
  • uncontrollable
  • observable
  • unstable
Q.15
Kalman’s test is for :
  • observability
  • controllability
  • optimality
  • observability and controllability
Q.16
Kalman’s test is for :
  • observability
  • controllability
  • optimality
  • observability and controllability
Q.17
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 of time.
  • controllable
  • observable
  • cannot be determined
  • controllable and observable
Q.18
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 of time.
  • controllable
  • observable
  • cannot be determined
  • controllable and observable
Q.19
With feedback            reduces.
  • system stability
  • system gain
  • system stability and gain
  • none of the mentioned
Q.20
In a control system integral error compensation                steady state error
  • increases
  • minimizes
  • does not have any effect on
  • all of the mentioned
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