MCQ on Control System with Answers - Set 08 - ObjectiveBooks

MCQ on Control System with Answers - Set 08

Practice Test: Question Set - 08


1. A closed loop system is distinguished from open loop system by which of the following?
    (A) Servomechanism
    (B) Feedback
    (C) Output pattern
    (D) Input pattern

2. The band width, in a feedback amplifier.
    (A) Remains unaffected
    (B) Decreases by the same amount as the gain increase
    (C) Increases by the same amount as the gain decrease
    (D) Decreases by the same amount as the gain decrease

3. In liquid level and electrical system analogy, voltage is considered analogous to
    (A) Head
    (B) Liquid flow
    (C) Liquid flow rate
    (D) None of the above

4. _______ is the reference input minus the primary feedback.
    (A) Manipulated variable
    (B) Zero sequence
    (C) Actuating signal
    (D) Primary feedback

5. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is
    (A) Not necessarily stable
    (B) Stable
    (C) Unstable
    (D) Always unstable

6. The effect of error damping is to
    (A) Provide larger settling lime
    (B) Delay the response
    (C) Reduce steady state error
    (D) Any of the above

7. Which of the following can be measured by LVDT?
    (A) Displacement
    (B) Velocity
    (C) Acceleration
    (D) Any of the above

8. Any externally introduced signal affecting the controlled output is called a
    (A) Feedback
    (B) Stimulus
    (C) Signal
    (D) Gain control

9. Transfer function of a system is used to calculate which of the following?
    (A) The order of the system
    (B) The time constant
    (C) The output for any given input
    (D) The steady state gain

10. Has tendency to oscillate.
    (A) Open loop system
    (B) Closed loop system
    (C) Both (A) and (B)
    (D) Neither (A) nor (B)

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