# Regulatori

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| By Sanja.srdelic
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Sanja.srdelic
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Quizzes Created: 6 | Total Attempts: 8,654
Questions: 26 | Attempts: 846

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• 1.

### PID regulatori su

• A.

Kontinuirani regulatori

• B.

Diskretni regulatori

• C.

• D.

Relejni regulatori

A. Kontinuirani regulatori
Explanation
The correct answer is "kontinuirani regulatori". This means that PID regulators are continuous regulators. Continuous regulators are able to continuously adjust the control signal based on the error between the desired setpoint and the actual process variable. They provide a smooth and continuous control action, making them suitable for systems that require precise and continuous control.

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• 2.

### Djelovanje  mu se iskazuje proporcionalnim područjem koje se definira kao potrebna postotna promjena ulazne veličine regulatora e(t) da bi se izlazna veličina promijenila za 100%. To je ...

• A.

P regulator

• B.

I regulator

• C.

D regulator

• D.

PID regulator

A. P regulator
Explanation
The explanation for the correct answer, P regulator, is that the proportional control action is expressed by a proportional area, which is defined as the necessary percentage change of the controller input variable e(t) in order to change the output variable by 100%. This means that the output response is directly proportional to the error signal, resulting in a linear relationship between the input and output.

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• 3.

### Karakteristike P regulatora su...

• A.

Dinamički odgovor regulatora i stabilno stanje se lako postiže

• B.

Ima minimum regulacijskog djelovanja

• C.

Povećava brzinu odgovora regulatora

• D.

Statička pogreška je prisutna

• E.

Potpuno eliminira statičku pogrešku

• F.

koristi se kada je u regulacijskom sustavu dopuštena statička pogreška

A. Dinamički odgovor regulatora i stabilno stanje se lako postiže
B. Ima minimum regulacijskog djelovanja
D. Statička pogreška je prisutna
F.  koristi se kada je u regulacijskom sustavu dopuštena statička pogreška
Explanation
The characteristics of a P controller include a dynamic response where the controller can easily achieve a stable state. It also has a minimum regulatory action, meaning it does not require a large amount of control effort to achieve the desired output. However, it is important to note that a P controller still has a static error, meaning there will be a deviation between the desired and actual output. Despite this, a P controller is commonly used when a small static error is acceptable in the control system.

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• 4.

### Karakteristike PD regulatora su...

• A.

Dinamički odgovor regulatora znatno je brži

• B.

Ima minimum regulacijskog djelovanja

• C.

Statička pogreška je prisutna

• D.

Potpuno eliminira statičku pogrešku

• E.

koristi se kada je u regulacijskom sustavu dopuštena statička pogreška

• F.

D komponenta povećava brzinu odgovora regulatora

A. Dinamički odgovor regulatora znatno je brži
C. Statička pogreška je prisutna
E.  koristi se kada je u regulacijskom sustavu dopuštena statička pogreška
F. D komponenta povećava brzinu odgovora regulatora
Explanation
The characteristics of a PD controller are that the dynamic response of the controller is significantly faster, there is a presence of static error, it is used when a static error is allowed in the control system, and the D component increases the speed of the controller's response.

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• 5.

### Karakteristike I regulatora su...

• A.

Niska brzina dinamičkog odgovora

• B.

Ima minimum regulacijskog djelovanja

• C.

Statička pogreška je prisutna

• D.

Potpuno eliminira statičku pogrešku

• E.

koristi se kada je u regulacijskom sustavu dopuštena statička pogreška

• F.

Velika brzina dinamičkog odgovora

• G.

Za sustave s niskim zahtjevima regulacije

A. Niska brzina dinamičkog odgovora
D. Potpuno eliminira statičku pogrešku
G. Za sustave s niskim zahtjevima regulacije
Explanation
The characteristics of an I regulator are low speed of dynamic response, complete elimination of static error, and it is used when static error is allowed in the control system. It is also suitable for systems with low regulation requirements.

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• 6.

### Karakteristike PI regulatora su...

• A.

Ne može postići jako veliku brzinu odgovora regulatora

• B.

Daje dinamički regulacijski odgovor bez pojave statičke pogreške

• C.

Statička pogreška je prisutna

• D.

Potpuno eliminira statičku pogrešku

• E.

Velika brzina dinamičkog odgovora

• F.

Većina regulacijskih zahtjeva može se riješiti upotrebom ovoga tipa regulatora

A. Ne može postići jako veliku brzinu odgovora regulatora
B. Daje dinamički regulacijski odgovor bez pojave statičke pogreške
D. Potpuno eliminira statičku pogrešku
F. Većina regulacijskih zahtjeva može se riješiti upotrebom ovoga tipa regulatora
Explanation
The characteristics of a PI controller are that it cannot achieve a very high response speed of the controller, most control requirements can be solved using this type of controller, it completely eliminates static error, and it provides a dynamic control response without static error. Additionally, it does not mention anything about a high dynamic response speed.

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• 7.

### Karakteristike PID regulatora su...

• A.

Nizak stupanj regulacijskog djelovanja

• B.

Spori dinamički odgovor

• C.

Statička pogreška je prisutna

• D.

Potpuno eliminira statičku pogrešku

• E.

Pogodan je za regulacijske sustave gdje se javljaju velika kašnjenja koja se moraju eliminirati na najbrži mogući način

• F.

Svi regulacijski zahtjevi mogu se riješiti upotrebom ovoga tipa regulatora

• G.

Najkompleksnije i najopsežnije regulacijsko djelovanje

D. Potpuno eliminira statičku pogrešku
E. Pogodan je za regulacijske sustave gdje se javljaju velika kašnjenja koja se moraju eliminirati na najbrži mogući način
F. Svi regulacijski zahtjevi mogu se riješiti upotrebom ovoga tipa regulatora
G. Najkompleksnije i najopsežnije regulacijsko djelovanje
Explanation
The characteristics of a PID controller mentioned in the given answer options are that it completely eliminates static error, is suitable for systems with large delays that need to be eliminated quickly, can solve all control requirements, and has the most complex and extensive control action.

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• 8.

### Da bi se postigli zadovoljavajući rezultati regulacije, osim upotrebe prikladnog regulatora, još je važnije da regulacijski parametri KP, KD i Ki budu prikladno namješteni.

• A.

Točno

• B.

Netočno

A. Točno
Explanation
In order to achieve satisfactory regulation results, it is important to use an appropriate controller and also to properly adjust the regulation parameters KP, KD, and Ki.

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• 9.

### D regulator se koristi kao samostalni regulator.

• A.

Točno

• B.

Netočno

B. Netočno
Explanation
The statement says "D regulator se koristi kao samostalni regulator," which translates to "The D regulator is used as an independent regulator." The correct answer is "Netočno," which means "False." Therefore, the explanation is that the D regulator is not used as an independent regulator.

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• 10.

### Slika prikazuje odziv i djelovanje ...

• A.

P regulatora

• B.

PI regulatora

• C.

PD regulatora

• D.

I regulatora

• E.

PID regulatora

A. P regulatora
Explanation
The given answer "P regulatora" refers to a proportional controller. A proportional controller is a type of feedback control system that uses a gain factor to adjust the output response based on the difference between the desired setpoint and the actual process variable. The output of a proportional controller is directly proportional to the error signal, which is the difference between the setpoint and the process variable. This means that the controller's response is proportional to the error, leading to a steady-state error in the system.

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• 11.

### Slika prikazuje odziv i djelovanje ...

• A.

P regulatora

• B.

PI regulatora

• C.

PD regulatora

• D.

I regulatora

• E.

PID regulatora

B. PI regulatora
Explanation
The image shows the response and action of different types of controllers. The correct answer is "PI regulatora." A PI controller is a proportional-integral controller that combines the benefits of both proportional and integral control. It adjusts the output based on both the current error and the cumulative error over time. This type of controller is commonly used in control systems to improve stability and reduce steady-state error.

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• 12.

### Slika prikazuje odziv i djelovanje ...

• A.

P regulatora

• B.

PI regulatora

• C.

PD regulatora

• D.

I regulatora

• E.

PID regulatora

D. I regulatora
Explanation
The image shows the response and action of different types of controllers. The correct answer is "I regulatora" which refers to an Integral controller. An integral controller calculates the accumulated error over time and adjusts the system's output accordingly. This type of controller is used to eliminate steady-state errors and provides stability to the system.

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• 13.

### Slika prikazuje odziv i djelovanje ...

• A.

P regulatora

• B.

PI regulatora

• C.

PD regulatora

• D.

I regulatora

• E.

PID regulatora

E. PID regulatora
Explanation
The correct answer is PID regulatora. The image shows the response and action of different types of controllers. The PID controller is a combination of proportional, integral, and derivative control actions. It is widely used in control systems as it provides a balance between stability and response speed. The proportional control action provides an immediate response to the error, the integral control action eliminates steady-state error, and the derivative control action helps in damping oscillations and improving stability.

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• 14.

### Kada se poremećaji u procesu javljaju većom brzinom nego što regulacijski krug može reagirati koristimo

• A.

• B.

PID regulaciju

• C.

Dvopoložajni regulator

• D.

Tropoložajni regulator

Explanation
When disturbances occur at a faster rate than the regulatory loop can respond, cascade control is used. In cascade control, there are two or more control loops where the output of one loop is used as the setpoint for another loop. This allows for faster and more accurate control of the process.

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• 15.

### Regulatori su ključne komponente u sustavu automatske regulacije i zadaća im je

• A.

Održati procesne varijable optimalnim vrijednostima

• B.

Povezati sustav u cjelinu

• C.

A. Održati procesne varijable optimalnim vrijednostima
Explanation
The correct answer is "održati procesne varijable optimalnim vrijednostima". Regulatori are key components in an automatic control system and their task is to maintain the process variables at optimal values. This means that regulators are responsible for continuously adjusting and controlling the system to ensure that the process variables, such as temperature, pressure, or flow rate, are maintained at their optimal setpoints. By doing so, regulators help to improve the efficiency, stability, and performance of the system.

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• 16.

### O djelovanju regulatora ovisi stabilnost postrojenja

• A.

Točno

• B.

Netočno

A. Točno
Explanation
The statement "O djelovanju regulatora ovisi stabilnost postrojenja" translates to "The stability of the system depends on the operation of the regulator." This means that the correct answer is "Točno" (True). The statement suggests that the regulator plays a crucial role in maintaining the stability of the system. If the regulator is not functioning properly or is not able to regulate the system effectively, it can lead to instability in the system. Therefore, the correct answer is "Točno" (True).

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• 17.

### Na temelju signala pogreške iz usporednika (komparatora) ____________________ računaju potrebne promjene upravljačke veličine.

regulatori
Explanation
Based on the error signal from the comparator, the regulators calculate the necessary changes in the control variable.

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• 18.

### Kontinuirani regulatori su

• A.

P regulator

• B.

PI regulator

• C.

PID regulator

• D.

Dvopoložajni regulator

• E.

Tropoložajni regulator

• F.

Impulsni regulatori

A. P regulator
B. PI regulator
C. PID regulator
Explanation
The correct answer includes P regulator, PI regulator, and PID regulator. These are all types of continuous regulators used in control systems. A P regulator (proportional regulator) adjusts the output based on the proportional relationship between the error and the control signal. A PI regulator (proportional-integral regulator) not only considers the error but also integrates it over time to improve the response. A PID regulator (proportional-integral-derivative regulator) further adds a derivative term to the control signal, which helps in anticipating and reacting to changes in the error.

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• 19.

### Regulatori s nekontinuiranim djelovanjem su

• A.

P regulator

• B.

PI regulator

• C.

PID regulator

• D.

Dvopoložajni regulator

• E.

Tropoložajni regulator

• F.

Impulsni regulatori

D. Dvopoložajni regulator
E. Tropoložajni regulator
F. Impulsni regulatori
Explanation
The correct answer includes three types of regulators: dvopoložajni regulator (dual-position regulator), tropoložajni regulator (three-position regulator), and impulsni regulatori (pulse regulators). These types of regulators are characterized by their specific modes of operation and control strategies.

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• 20.

### Dvopoložajni regulator ima

• A.

Samo dva krajnja položaja on/off

• B.

Tri stupnja regulacije

• C.

Mogu raditi u dva položaja, okomiti i vodoravni

• D.

šalju dva impulsa

A. Samo dva krajnja položaja on/off
Explanation
The correct answer is "samo dva krajnja položaja on/off" which means that the dual-position regulator only has two extreme positions, either on or off. This implies that it can only switch between these two states and does not have any intermediate positions or levels of regulation.

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• 21.

### Regulator s bimetalnom trakom primjer je

• A.

Dvopoložajnog regulatora

• B.

Tropoložajnog regulatora

• C.

PID regulatora

• D.

Impulsnog regulatora

B. Tropoložajnog regulatora
Explanation
A regulator s bimetalnom trakom refers to a type of temperature regulator that uses a bimetallic strip to control the temperature. The bimetallic strip is made up of two different metals with different rates of expansion when heated. As the temperature changes, the strip bends and activates or deactivates the electrical contacts, thereby regulating the temperature. A tropoložajni regulator is a type of regulator that has three operating positions, typically an off position, a low position, and a high position. Therefore, the correct answer is tropoložajnog regulatora.

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• 22.

• A.

Točno

• B.

Netočno

A. Točno
Explanation
In the cascade control mode, the output of one controller is used to adjust the setpoint of another controller. This means that the output of the first controller acts as the setpoint for the second controller, effectively changing its operating point. Therefore, the statement "Kod kaskadnog načina vođenja izlaz jednog regulatora mijenja radnu točku drugoga" is correct, as it accurately describes the relationship between the controllers in cascade control.

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• 23.

• A.

barem pet puta brži od vanjskog kruga

• B.

Barem tri puta brži

• C.

Jednako brz kao i vanjski krug

• D.

Sporiji od vanjskog kruga

B. Barem tri puta brži
Explanation
Kaskadna regulacija se koristi kada je unutarnji krug barem tri puta brži od vanjskog kruga. To je važno jer omogućava da unutarnji krug brže reagira na promjene i pruža veću preciznost u regulaciji. Ako je unutarnji krug sporiji od vanjskog kruga, može doći do kašnjenja u odgovoru i gubitka stabilnosti u regulaciji. Stoga je važno osigurati da unutarnji krug bude dovoljno brz kako bi se postigla optimalna kaskadna regulacija.

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• 24.

• A.

Kompenzacija utjecaja poremećaja

• B.

Brži odziv

• C.

Izolacija nelinearnosti

• D.

Rješavanje problema s regulacijom procesa s prebrzom pojavom poremećaja

• E.

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