MCQ 1 In open loop control system

(A) Only system parameters have effect on the control output (B) Output is dependent of control input (C) Output is independent of control input (D) None of the above

MCQ 2 Which of the following is an open loop control system

(A) Field controlled D.C. motor (B) Ward leonard control (C) Metadyne (D) Stroboscope

MCQ 3 Which of the following is an open loop control system

(A) Field controlled D.C. motor (B) Ward leonard control (C) Metadyne (D) Stroboscope

MCQ 4 In open loop control system

(A) The control action depends on the size of the system (B) The control action depends on system variables (C) The control action depends on the input signal (D) The control action is independent of the output

MCQ 5 For open loop control system which of the following statements is incorrect?

(A) Less expensive (B) Construction is simple and maintenance easy (C) Recalibration is not required for maintaining the required quality of the output (D) Errors are caused by disturbances

MCQ 6 The area of his hysteresis loss is a measure of

(A) Permeance (B) Energy loss per cycle (C) Permittivity (D) Magnetic flux

MCQ 7 Calculate the poles and zeroes for the given transfer function G(s) = 5 (s + 2)/ (s² + 3s + 2)

(A) 2, (1, 2) (B) −2, (1, −2) (C) 2, (−1, 2) (D) −2, (−1, −2)

MCQ 8 The controller required to handle fast process load changes is:

(A) PD controller (B) PI Controller (C) PID Controller (D) None of the above

MCQ 9 By equating the denominator of transfer function to zero, which among the following will be obtained?

(A) Poles (B) Zeros (C) Both a and b (D) None of the above

MCQ 10 In a signal flow graph, nodes are represented by small _______________.

(A) Pointers (B) Arrows (C) Squares (D) Circles

MCQ 11 The mechanism of control of body temperature is non feedback system?

(A) True (B) False (C) Cant Say (D) None is correct

MCQ 12 Benefits of feedback

(A) Controlled variable accurately follows the desired value (B) Performance of system is greater (C) Affected by parameter variations (D) Need for system much larger path gain and system instability

MCQ 13 Feedback always increases the gain?

(A) Cant say true or false (B) True (C) False (D) None is correct

MCQ 14 Effect of feedback on sensitivity is minimum in:

(A) Open loop control system (B) Closed loop control system (C) None of the mentioned (D) Both of the mentioned

MCQ 15 Feedback control systems are

(A) Less sensitive to forward path parameter changes that to feedback path parameter changes (B) Equally sensitive to forward feedback path parameter changes (C) Less sensitive to feedback path parameter changes than to forward path parameter changes (D) Insensitive to both forward and feedback path parameter changes

MCQ 16 The mechanism of control of body temperature is non feedback system?

(A) True (B) False (C) Cant Say (D) None is correct

MCQ 17 Benefits of feedback:

(A) Performance of system is greater. (B) Need for system much larger path gain and system instability. (C) Controlled variable accurately follows the desired value. (D) Affected by parameter variations.

MCQ 18 Feedback always increases the gain?

(A) True (B) False (C) Can't Say (D) None is correct

MCQ 19 Effect of feedback on sensitivity is minimum in:

(A) Closed loop control system (B) Open loop control system (C) None of the mentioned (D) Both of the mentioned Answer

MCQ 20 Feedback control systems are:

(A) Equally sensitive to forward feedback path parameter changes (B) Less sensitive to forward path parameter changes that to feedback path parameter changes (C) Less sensitive to feedback path parameter changes than to forward path parameter changes (D) Insensitive to both forward and feedback path parameter changes

MCQ 21 Consider the following statements with respect to the feedback of the control systems:

1. Statement : Feedback can improve stability or be harmful to stability if it is not properly applied.
2. Statement : Feedback can always improve stability
3. Statement : In many situations the feedback can reduce the effect of noise and disturbance on system performance.
4. Statement : In general the sensitivity of the system gain of a feedback system of a parameter variation depends on where the parameter is located.
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(A) 1, 2 and 3 only (B) 1, 3 and 4 only (C) 1, 2 and 4 only (D) 1, 2, 3 and 4 only

Correct Answer Choice B 1, 3 and 4 only
See Answer

MCQ 22 The closed system has higher ________ than open loop control system, this implies increased speed of response.

(A) Speed (B) Frequency (C) Gain (D) Bandwidth

MCQ 23 Feedback can always reduce the effects of noise and disturbance on system performance?

(A) True (B) False (C) Can't Say (D) None is correct

MCQ 24 Multiple signals as input can be used in which systems:

(A) Feedback systems (B) Non feedback systems (C) Feedforward systems (D) None of the mentioned

MCQ 25 Feedback can cause a system that is originally stable to become___________

(A) Unstable (B) Stable (C) Either more stable or unstable (D) Conditionally stable