Concepts of State, State Variables and State Model MCQ

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• Amplifier:
  ক

  Armature controlled FHP DC motor

  খ

  A pair of synchronous transmitter and control transformer

  গ

  Tach generator

  ঘ

  Amplidyne
• Servomotor:
  ক

  Armature controlled FHP DC motor

  খ

  A pair of synchronous transmitter and control transformer

  গ

  Tach generator

  ঘ

  Amplidyne
• Error detector:
  ক

  Armature controlled FHP DC motor

  খ

  A pair of synchronous transmitter and control transformer

  গ

  Tach generator

  ঘ

  Amplidyne
• Consider the following statements relating to synchro’s: 1. The rotor of the control transformer is either disc shaped 2. The rotor of the transmitter is so constructed as to have a low magnetic reluctance 3. Transmitter and control transformer pair is used as an error detector Which of these statements are correct?
  ক

  1,2 and3

  খ

  1 and 2

  গ

  2 and3

  ঘ

  1 and 3
• 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,
  ক

  X/R and L/D are both small

  খ

  X/R is large but L/D is small

  গ

  X/R is small but L/D is large

  ঘ

  X/R and L/D are both large
• When human being tries to approach an object, his brain acts as,
  ক

  An error measuring device

  খ

  A controller

  গ

  An actuator

  ঘ

  An amplifier
• Assertion (A): Transfer function approach has limitation that it reveals only the system output for a input and provides no information regarding the internal state of the system. Reason (R): There may be situations where the output of a system is stable and yet some of the system elements may have a tendency to exceed their specified ratings.
  ক

  Both A and R are true and R is correct explanation of A

  খ

  Both A and R are true but R is not correct explanation of A

  গ

  A is true but R is False

  ঘ

  A is False but R is True
• State space analysis is applicable for non-linear systems and for multiple input and output systems.
  ক

  True

  খ

  False
• System transformation on function H(z) for a discrete time LTI system expressed in state variable form with zero initial condition
  ক

  C(zI-A)-1B+D

  খ

  C(zI-A)-1

  গ

  (zI-A)-1z

  ঘ

  (zI-A)-1
• The transfer function for the state representation of the continuous time LTI system: dq(t)/dt=Aq(t)+Bx(t) Y(t)=Cq(t)+Dx(t) is given by:
  ক

  C(sI-A)-1B+D

  খ

  B(sI-A)-1B+D

  গ

  C(sI-A)-1B+A

  ঘ

  D(sI-A)-1B+C