Feedback Compensation MCQs : This section focuses on the "Feedback Compensation". These Multiple Choice Questions (MCQs) should be practiced to improve the Feedback Compensation skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
As compared to the closed loop system, an open loop system is
A. More stable but less accurate
B. Less stable as well as less accurate
C. More stable as well as more accurate
D. Less stable but more accurate
Question 2
Feedback control system is basically
A. High pass filter
B. Low pass filter
C. Band pass filter
D. Band stop filter
Question 3
In control system excessive bandwidth is not employed because
A. Noise is proportional to bandwidth
B. It leads to low relative stability
C. It leads to slower time response
D. Noise is proportional to the square of the bandwidth
Question 4
Insertion of negative feedback in control system affects:
A. The transient response to vanish uniformly
B. The transient response to decay very fast
C. No change in transient response
D. The transient response decays at slow rate
Question 5
Open loop system is ___________ stable than closed loop system
A. More
B. Less
C. Inclined
D. Exponential
Question 6
Primary purpose of using Feedback is :
A. To reduce the sensitivity of the system to parameter variations.
B. To increase the bandwidth of the system
C. To reduce the noise and distortion of the system
D. To increase stability of the system
Question 7
Which of the following are the not characteristics of the closed loop systems?
A. It does not compensate for disturbance
B. It reduces the sensitivity of plant-parameter variations
C. It does not involve output measurements
D. It does not has the ability to control the system transient response
Question 8
Which of the following will not decrease as a result of introduction of negative feedback?
A. Instability
B. Bandwidth
C. Overall gain
D. Distortion
Question 9
Which of the statement is correct with regard to the bandwidth of the control loop system:
A. In systems where the low frequency magnitude in 0 dB on the bode diagram, the bandwidth is measured at the -3 dB frequency
B. The bandwidth is the measurement of the accuracy of the closed loop system
C. The stability is proportional to the bandwidth
D. The system with larger bandwidth provides slower step response and lower fidelity ramp response
Question 10
Which one of the following effect in the system is not caused by negative feedback?
A. Reduction in gain
B. Increased in bandwidth
C. Increase in distortion
D. Reduction in output impedance