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Test: Feedback And Non Feedback Systems


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10 Questions MCQ Test | Test: Feedback And Non Feedback Systems

Test: Feedback And Non Feedback Systems for Electrical Engineering (EE) 2022 is part of Electrical Engineering (EE) preparation. The Test: Feedback And Non Feedback Systems questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Feedback And Non Feedback Systems MCQs are made for Electrical Engineering (EE) 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Feedback And Non Feedback Systems below.
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Test: Feedback And Non Feedback Systems - Question 1

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

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 1

Explanation: It is feedback system as the temperature of our body is regulated periodically and being warm blooded we regulate our body temperature w.r.t. to the climate.

Test: Feedback And Non Feedback Systems - Question 2

Benefits of feedback:

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 2

Explanation: Closed loop system is the system with the feedback and this can be positive or negative feedback and having feedback have less dependence on parameter variation.

Test: Feedback And Non Feedback Systems - Question 3

Feedback always increases the gain?

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 3

Explanation: It cannot always increase gain it can also reduce the gain as gain of Open loop control system is more as compared to it.

Test: Feedback And Non Feedback Systems - Question 4

Effect of feedback on sensitivity is minimum in:

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 4

Explanation: Sensitivity is defined as the change in output with respect to change in parameter or input and for a good control system the sensitivity must be less and in closed loop control system it gets reduced by the factor of 1/(1+GH).

Test: Feedback And Non Feedback Systems - Question 5

Feedback control systems are:

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 5

Explanation: Feedback control system can be positive and negative but positive feedback systems less widely used as the positive feedback systems are more sensitive to parameter variations but negative feedback are less sensitive to change in G than change in H.

Test: Feedback And Non Feedback Systems - Question 6

. Consider the following statements with respect to the feedback of the control systems:
1. Feedback can improve stability or be harmful to stability if it is not properly applied.
2. Feedback can always improve stability
3. In many situations the feedback can reduce the effect of noise and disturbance on system performance.
4. In general the sensitivity of the system gain of a feedback system of a parameter variation depends on where the parameter is located.

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 6

Explanation: Negative feedback increases stability but not positive positive feedback reduces the stability and for this reason negative feedback systems are used .

Test: Feedback And Non Feedback Systems - Question 7

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

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 7

Explanation: As transient response of the system is improved by the use of feedback and it causes the settling time to reduce and closed loop system has higher bandwidth than open loop systems and this implies increase in speed of response.

Test: Feedback And Non Feedback Systems - Question 8

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

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 8

Explanation: Feedback has many advantages as it can reduces the effects of noise and disturbance on system performance by increasing speed of response.

Test: Feedback And Non Feedback Systems - Question 9

Multiple signals as input can be used in which systems:

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 9

Explanation: As in feedback system output can be obtained for more than one input as output can be generated for both the reference input and also for the disturbance input.

Test: Feedback And Non Feedback Systems - Question 10

Feedback can cause a system that is originally stable to become___________

Detailed Solution for Test: Feedback And Non Feedback Systems - Question 10

Explanation: Feedback can either make a system stable if not stable previously or may be it can cause instability as it reduces the gain of the system and hence the system can become stable if unstable or vice versa.

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