NTA-NET (Based on NTA-UGC) Electronic Science (Paper-II): Questions 95 - 99 of 132
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Passage
Sensitivity considerations often are important in the design of Control Systems. Because all physical elements have properties that change with environment and age, we cannot always consider the parameters of the Control System to be completely stationary over the entire operating life of system. For instance, the winding resistance of an electric motor changes as the temperature of the motor rises during the operation. Control System with electric components may not operate normally when first turned on because of the still-changing system during warm-up. This phenomenon is sometimes called “morning sickness”. Most duplicating machines have a warm-up period during which time operation is blocked out when first turned on.
(July)
Question number: 95 (1 of 5 Based on Passage) Show Passage
» Control System » Error Amplifier
Appeared in Year: 2018
Question
The open loop transfer function of a Unity feedback Control System is given by the steady state error will be: (July)
Choices
| Choice (4) | Response | |
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| a. | rad |
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| b. | rad |
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| c. | rad |
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| d. | rad |
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Question number: 96 (2 of 5 Based on Passage) Show Passage
» Control System » On off Controller
Appeared in Year: 2018
Question
A good control should be: (July)
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Insensitive to parameter variations |
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| b. | Very sensitive to parameter variations |
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| c. | Sensitive to input commands. |
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| d. | Insensitive to input commands |
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Question number: 97 (3 of 5 Based on Passage) Show Passage
Appeared in Year: 2018
Question
Which of the following statements is correct?
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | A feedback can increase or decrease the sensitivity of a system. |
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| b. | A feedback can only decrease the sensitivity of the system. |
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| c. | A feedback can only increase the sensitivity of the system. |
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| d. | A feedback never affects the sensitivity of a system. |
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Question number: 98 (4 of 5 Based on Passage) Show Passage
» Control System » Sensitivity
Appeared in Year: 2018
Question
The sensitivity of the overall (closed-loop) transfer function for the system shown below, with respect to forward path transfer function at will be: (July)
Image of the Overall (Closed-Loop) Transfer Function
Image of The overall (closed-loop) transfer function
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | 0.398 |
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| b. |
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| c. | 0.583 |
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| d. |
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Question number: 99 (5 of 5 Based on Passage) Show Passage
» Control System » Open - Loop and Close-Loop Control System
Appeared in Year: 2018
Question
For an open-loop control system, sensitivity of overall transfer function M (s) with respect to forward path transfer function G (s) will be: (July)
Choices
| Choice (4) | Response | |
|---|---|---|
| a. |
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| b. |
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| c. | ∞ |
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| d. |
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