# Merenja 2 Vtest

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Quizzes Created: 1 | Total Attempts: 269
Questions: 129 | Attempts: 269  Settings  .

• 1.

### Efektivna vrednost složenog periodičnog signala

• A.

Zavisi samo od efektivnih vrednosti njegovih harmonika, a ne zavisi od njihove početne faze Pn

• B.

Zavisi od efektivnih vrednosti njegovih harmonika, i od njihove početne faze Pn

• C.

Zavisi samo od početne faze njegovih harmonika Fn, a ne zavisi od njihovih efektivnih vrednosti

A. Zavisi samo od efektivnih vrednosti njegovih harmonika, a ne zavisi od njihove početne faze Pn
Explanation
The effective value of a complex periodic signal depends only on the effective values of its harmonics, and not on their initial phase Pn.

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• 2.

### Efektivna vrednost prostoperiodičnog napona u(t)=U*sin(w*t+p)

• A.

Uef=U√2

• B.

U_ef=U/√2

• C.

U_ef=0

B. U_ef=U/√2
Explanation
The correct answer is U_ef=U/√2. This is because the effective value (U_ef) of a sinusoidal voltage is equal to the peak value (U) divided by the square root of 2 (√2). The effective value represents the equivalent DC voltage that would produce the same amount of power in a resistive load as the sinusoidal voltage.

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• 3.

### Temena vrednost prostoperiodične veličine zove se

amplituda
Explanation
The given question is asking for the term used to describe the constant value of a periodic quantity. The correct answer is "amplituda," which is a term used to describe the maximum amplitude or magnitude of a periodic signal.

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• 4.

### Merenje, u najopštijem slučaju, obuhvata

• A.

Prenos mernog signala

• B.

• C.

• D.

Option 4

C. Prenos i obradu mernog signala
Explanation
The correct answer is "prenos i obradu mernog signala" which means "transmission and processing of the measurement signal" in English. This suggests that measurement, in its broadest sense, involves both the transmission and processing of the measurement signal. This implies that the measurement process includes not only the transfer of the signal from the source to the receiver but also the manipulation and analysis of the signal to obtain meaningful information or data.

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• 5.

### Funkcija prikazana na slici

• A.

Predstavljena izrazom y(O)=sin(O)

• B.

Aperiodična

• C.

Neparna

• D.

Periodična

• E.

Predstavljena izrazom z(O)=cos(O)

• F.

Parna

D. Periodična
E. Predstavljena izrazom z(O)=cos(O)
F. Parna
Explanation
The given function is represented by the expression z(O) = cos(O), which is a cosine function. A cosine function is periodic because it repeats itself after a certain interval, which in this case is 2π. Additionally, the cosine function is an even function, meaning that it is symmetric with respect to the y-axis. Therefore, it is correct to say that the function is periodic and represented by the expression z(O) = cos(O), and it is also correct to say that it is an even function.

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• 6.

### Periodična struja čija je srednja vrednost jednaka nuli je

• A.

Pulsirajuća

• B.

Naizmenična

• C.

Konstanta

• D.

Option 4

B. Naizmenična
Explanation
The correct answer is "naizmenična". "Naizmenična" means alternating in Serbian. In this context, it refers to an alternating current (AC) where the average value is zero. Unlike direct current (DC), which flows in only one direction, AC periodically changes direction. Therefore, it is correct to say that a periodic current with an average value of zero is "naizmenična".

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• 7.

### Veličina koja predstavlja merenu veličinu i sa kojom je funkcionisalo povezana predstavlja

informacioni parametar
Explanation
The given correct answer states that the measured quantity and its associated function represent an information parameter. This implies that the quantity being measured is used to gather information or provide data in a specific context or system. The term "informacioni parametar" suggests that this parameter is related to the transmission, processing, or storage of information.

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• 8.

### Signal koji se identično reprodukuje u jednakim intervalima nezavisno promenljive je

periodičan
Explanation
The given question is in Serbian and it translates to "A signal that is reproduced identically at equal intervals independent of the variable is". The correct answer "periodic" aligns with the question as it describes a signal that repeats itself in a regular pattern over time. This means that the signal exhibits a periodic behavior, where it can be represented by a periodic function or waveform.

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• 9.

### Promena vrednosti analogne veličine

• A.

Može da bude beskonačno mala

• B.

Može da bude samo neka iz ugla diskretnih vrednosti

• C.

Ne može da bude beskonačno mala

• D.

Option 4

A. Može da bude beskonačno mala
Explanation
The correct answer is "može da bude beskonačno mala" which translates to "it can be infinitely small." This implies that the change in the value of an analog quantity can be extremely minute or infinitesimal.

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• 10.

### Signali čiji buduće vrednosti(promene) nisu unapred poznate zovu se nedetrministički

• A.

Tačno

• B.

Netačno

A. Tačno
Explanation
The given statement states that signals whose future values or changes are not known in advance are called nondeterministic. This means that the values or changes of these signals cannot be predicted or determined with certainty. Therefore, the correct answer is "Tačno" (True) as it accurately reflects the definition of nondeterministic signals.

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• 11.

### Nosilac informacije koji mogućava njeno prenošenje kroz prostor i vreme zove se

signal
Explanation
The correct answer is "signal." A signal is a carrier of information that can be transmitted through space and time. It can be in the form of electrical, electromagnetic, or any other type of wave that carries information from one location to another. Signals are used in various communication systems to convey messages and enable the transfer of data between different devices or individuals.

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• 12.

### Signali koji mogu da budu predstavljeni nekom određenom matematičkom funkcijom vremena zovu se nederminističkom

• A.

Tačno

• B.

Netačno

B. Netačno
Explanation
The statement is incorrect. The correct answer is "Netačno" which means "False" in English. The given statement says that signals that can be represented by a specific mathematical function of time are called non-deterministic, but this is not true. Non-deterministic signals refer to signals that cannot be predicted or determined with certainty.

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• 13.

### Signali koji mogu da budu predstavljeni nekom određenom matematičkom funkcijom vremena zovu se determinističkom

• A.

Tačno

• B.

Netačno

A. Tačno
Explanation
The given statement is true. It states that signals that can be represented by a specific mathematical function of time are called deterministic. This means that these signals can be precisely predicted and have a fixed relationship between their input and output values. Deterministic signals are often used in various fields, such as engineering and physics, for modeling and analysis purposes.

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• 14.

### Koji je tip signala prikazan na slici

• A.

Prostoperiodični

• B.

Kvaziperiodični

• C.

Složenoperiodični

C. Složenoperiodični
Explanation
The correct answer is "složenoperiodični" (complex periodic). This means that the signal shown in the picture is a combination of multiple periodic signals with different frequencies and amplitudes. It is not a simple periodic signal with a single frequency or a quasi-periodic signal that is not strictly periodic.

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• 15.

### Funkcija prikazana na slici

• A.

Neparna

• B.

Predstavljena izrazom z(O)=cos(O)

• C.

Predstavljena izrazom y(O)=sin(O)

• D.

Periodična

• E.

Aperiodična

• F.

Parna

A. Neparna
C. Predstavljena izrazom y(O)=sin(O)
D. Periodična
Explanation
The given answer is correct because the function is described as "neparna" which means odd in Serbian. This means that the function satisfies the property f(-x) = -f(x), which is true for the function y(O) = sin(O). Additionally, the function is also described as "periodična" which means periodic, indicating that it repeats itself after a certain interval.

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• 16.

### Veličina koja predstavlja merenu veličinu i sa kojom je funkcionalno povezana zove se

• A.

Merni signal

• B.

Informacioni parametar

• C.

Merni parametar

B. Informacioni parametar
Explanation
The correct answer is "informacioni parametar". In the given question, it is stated that the size that represents the measured quantity and is functionally connected to it is called "informacioni parametar". This implies that the measured quantity is related to information, indicating that the correct term to use is "informacioni parametar".

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• 17.

### Periodična struja čija je srednja vrednost različita od nule je

• A.

Naizmenična

• B.

Pulsirajuća

• C.

Konstantna

B. Pulsirajuća
Explanation
A periodic current with a non-zero average value is referred to as a pulsating current. This type of current fluctuates around a non-zero mean value, resulting in a pulsating waveform. It is different from an alternating current, which changes direction periodically, and a constant current, which has a steady and unchanging value.

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• 18.

### Ako je , funkcija je:

• A.

Periodična

• B.

Kvaziperiodična

• C.

Aperiodična

C. Aperiodična
Explanation
The question is asking about the nature of the function given a certain condition. However, the condition is missing from the question, making it incomplete and unreadable. Therefore, an explanation cannot be provided.

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• 19.

### Promena vrednosti digitalne veličine

• A.

Može da bude samo neka iz skupa diskretnih vrednosti

• B.

Može da bude beskonačno mala

• C.

Ne može da bude beskonačno mala

A. Može da bude samo neka iz skupa diskretnih vrednosti
Explanation
The correct answer states that the change in value of a digital quantity can only be one of the discrete values in a set. This means that digital quantities cannot have continuous or infinite values, but rather can only have specific, distinct values.

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• 20.

### Signali prema intezitetu mogu da budu

• A.

Neprekidni

• B.

Digitalni

• C.

Analogni

• D.

Diskretni

B. Digitalni
C. Analogni
Explanation
The question is asking for the types of signals based on their intensity. The correct answer is "digitalni" (digital) and "analogni" (analog). Digital signals are discrete and have a finite number of possible values, while analog signals are continuous and can have an infinite number of possible values.

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• 21.

### Kolika je distorzija trećeg harmonika (%D3=7) ako je napon

• A.

10%

• B.

0,5%

• C.

5%

C. 5%
Explanation
The correct answer is 5%. The question is asking for the distortion of the third harmonic (%D3) given different voltage values. However, the question is incomplete and not readable, so it is difficult to provide a specific explanation.

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• 22.

### Izrazom određuje se

• A.

Srednja vrednost

• B.

Srednja apsolutna vrednost

• C.

Efektivna vrednost

B. Srednja apsolutna vrednost
Explanation
The correct answer is "srednja apsolutna vrednost" (mean absolute value). This term is used to determine the average magnitude or absolute value of a set of numbers. It is calculated by summing the absolute values of all the numbers in the set and then dividing by the total number of values. This measure is often used in statistics and signal processing to quantify the average deviation from zero or the central tendency of a dataset.

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• 23.

### Izraz

• A.

Pulsirajući napon

• B.

Naizmenični i pulsirajući napon

• C.

Naizmenični napon

A. Pulsirajući napon
Explanation
The correct answer is "pulsirajući napon". This term refers to a type of voltage that fluctuates or pulsates in a periodic manner. Unlike direct current (DC) which has a constant voltage level, pulsating voltage has variations in its magnitude or frequency. This can occur in alternating current (AC) circuits when there are disturbances or irregularities in the waveform. Pulsating voltage can have implications for the performance and operation of electrical devices and systems.

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• 24.

### Izrazom  određuje se

• A.

Efektivna vrednost

• B.

Srednja apsolutna vrednost

• C.

Srednja vrednost

C. Srednja vrednost
Explanation
The correct answer is "srednja vrednost" because the given expression is used to determine the average value of something. It is a mathematical term that represents the sum of all values divided by the total number of values.

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• 25.

### Pokazatelj usrednjavnja Kr je definisan kao količnik

• A.

Temene vrednosti i efektivnih vrednosti periodične veličine

• B.

Efektivne vrednosti i srednje apsolutne vrednosti periodične veličine

• C.

Temene vrednosti i srednje apsolutne vrednosti periodične veličine

C. Temene vrednosti i srednje apsolutne vrednosti periodične veličine
Explanation
The correct answer is "Temene vrednosti i srednje apsolutne vrednosti periodične veličine." This is because the indicator of central tendency in statistics is defined as the ratio between the peak values and the mean absolute values of a periodic quantity.

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• 26.

### Izraz opisuje

• A.

Naizmeničan napon

• B.

Pulsirajući napon

• C.

Naizmeničan i pulsirajući napon

A. Naizmeničan napon
Explanation
The given answer "Naizmeničan napon" is correct because the term "naizmeničan" in Serbian translates to "alternating" in English. Therefore, the expression describes an alternating voltage, which refers to a type of electrical current that periodically changes direction.

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• 27.

### Količnik predstavlja

• A.

Pokazatelj oblika

• B.

Pokazatelj vrha

• C.

Pokazatelj usrednjavanja

A. Pokazatelj oblika
Explanation
The correct answer is "pokazatelj oblika" because the word "količnik" in the question suggests that it is referring to a ratio or a quotient. "Pokazatelj oblika" translates to "indicator of shape" in English, which indicates that the "količnik" is a measure or an indicator that describes the shape of something.

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• 28.

### Izrazom određuje se

• A.

Efektivna vrednost

• B.

Srednja vrednost

• C.

Srednja apsolutna vrednost

A. Efektivna vrednost
Explanation
The given correct answer is "efektivna vrednost". This term is used to determine the effective value of a quantity, which is the square root of the mean of the squared values of that quantity. It is commonly used in electrical engineering to calculate the root mean square (RMS) value of an alternating current or voltage signal. The effective value represents the magnitude of the signal that produces the same amount of power as a direct current or a constant voltage signal.

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• 29.

### Pokazatelj vrha Ky je definisan kao količnik

• A.

Temene vrednosti i srednje apsolutne vrednosti periodične veličine

• B.

Temene vrednosti i efektivne vrednosti periodične veličine

• C.

Efektivne vrednosti i srednje apsolutne vrednosti periodične veličine

B. Temene vrednosti i efektivne vrednosti periodične veličine
Explanation
The correct answer is "Temene vrednosti i efektivne vrednosti periodične veličine." This is because the peak value of a periodic quantity is the maximum value it reaches during one complete cycle, while the effective value is the root mean square (RMS) value of the quantity over one complete cycle. These two values are used to characterize the amplitude and magnitude of a periodic quantity.

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• 30.

B.
• 31.

### Količnik predstavlja

• A.

Pokazatelj usrednjavanja

• B.

Pokazatelj vrha

• C.

Pokazatelj oblika

B. Pokazatelj vrha
Explanation
The correct answer is "pokazatelj vrha" because "količnik" refers to the quotient or ratio between two numbers. In this context, "pokazatelj vrha" translates to "peak indicator" or "indicator of the peak." This suggests that the quotient is related to the highest point or maximum value in a given situation or data set.

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• 32.

### Raspodela veličine u funkciji učestalosti ili talasne dužine naziva se

spektar
Explanation
The correct answer is "spektar." The question asks for the term used to describe the distribution of size in relation to frequency or wavelength. The term for this is "spektar," which refers to the range or distribution of values within a given parameter.

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• 33.

### Kolika je distorzija drugog harmonika (%D2=?) ako je napon

• A.

10%

• B.

0,1%

• C.

1%

A. 10%
Explanation
The question is asking for the distortion of the second harmonic (%D2) given different voltage values. The answer states that the distortion of the second harmonic is 10%. This means that when the voltage is at 10%, 0.1%, or 1%, the distortion of the second harmonic will be 10%.

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• 34.

### Količnik predstavlja

• A.

Pokazatelj vrha

• B.

Pokazatelj usrednjavanja

• C.

Pokazatelj oblika

B. Pokazatelj usrednjavanja
Explanation
The correct answer is "pokazatelj usrednjavanja" because the term "količnik" in the question suggests that it is asking for a ratio or a quotient. "Pokazatelj usrednjavanja" translates to "average indicator" or "measure of central tendency," which is a type of ratio that represents the average or typical value in a set of data. Therefore, it is the most appropriate answer among the options given.

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• 35.

### Deo mernog lanca koji jednu veličinu pretvara, u informacionom smislu, u drugu veličinu radi merenja naziva se

merni pretvarač
Explanation
A device that converts one quantity into another quantity for the purpose of measurement is called a "merni pretvarač" in Serbian.

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• 36.

### Pri merenju neelektričnih veličina, informacija dobijena pomoću senzora

• A.

Nikada nije u obliku pogodnom za precizno merenje

• B.

Najčešće je u obliku pogodnom za precizno merenje

• C.

Najčešće nije u obliku pogodnom za precizno merenje

C. Najčešće nije u obliku pogodnom za precizno merenje
Explanation
The correct answer is "najčešće nije u obliku pogodnom za precizno merenje." This answer suggests that when measuring non-electrical quantities, the information obtained from sensors is often not in a suitable form for precise measurement.

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• 37.

### Deo mernog sistema na koji neposredno deluje veličina koju treba meriti naziva se

senzor
Explanation
A sensor is a device that directly interacts with the quantity that needs to be measured in a complex system. It is designed to detect and respond to changes in the physical environment, converting them into electrical signals or other forms of output that can be easily measured and analyzed. In this context, a sensor is the most appropriate term to describe the component of a multiple system that directly influences the measurement of a specific variable.

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• 38.

### Pri merenjima u industrijskim uslovima (procesna merenja) najveći broj senzora, pomoću kojih se merena neelektrična veličina transformiše u električni signal, predstavlja

• A.

Aktivne električne elemente

• B.

Pasivne električne elemente

• C.

Pasivne i aktivne električne elemente

B. Pasivne električne elemente
Explanation
In industrial conditions, process measurements involve transforming non-electrical variables into electrical signals using sensors. The majority of these sensors represent passive electrical elements.

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• 39.

### Deo mernog lanca koji ostvaruje spregu sa senzorom naziva se

kondicioner
Explanation
The correct answer is "kondicioner" because a conditioner is a device that creates a connection or coupling with a sensor in order to achieve a desired effect or result. The term "deo mernog lanca" suggests that it is a component or part of a measurement chain, and "kondicioner" fits this description as it is commonly used in various measurement systems to condition or modify the signals from sensors for further processing or analysis.

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• 40.

### U industrijskoj metrologiji najširu primenu imaju

• A.

Induktivni senzori

• B.

Otpornički senzori

• C.

Kapacitivni senzori

B. Otpornički senzori
• 41.

### Nosilac informacije (izlazni signal) može biti napon, struja ili naelektrisanje kdo

• A.

Aktivnih i pasivnih snezora

• B.

Aktivnih (generatorskih) senzora

• C.

Pasivnih senzora

B. Aktivnih (generatorskih) senzora
Explanation
The correct answer is "aktivnih (generatorskih) senzora" because it states that the information carrier (output signal) can be voltage, current, or charge, and it specifically mentions "aktivnih (generatorskih) senzora" which translates to "active (generating) sensors." This implies that the output signal is generated by these sensors, indicating that they are the correct answer.

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• 42.

### Struktura kondicionera određena je električnim karakteristikama senzora i praktično_________________od fizičke prirodne veličine koja se meri

ne zavisi
Explanation
The structure of the conditioner is determined by the electrical characteristics of the sensor and practically does not depend on the physical natural quantity being measured.

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• 43.

### Prema______________ prirodi veličine koja se meri, senzori se mogu podeliti u dve osnovne grupe: senzore električnih i senzore neelektričnih veličina

fizičkoj
Explanation
The correct answer is "fizičkoj". The question is asking for an explanation of the phrase "Prema fizičkoj prirodi veličine koja se meri, senzori se mogu podeliti u dve osnovne grupe: senzore električnih i senzore neelektričnih veličina." This phrase is stating that sensors can be divided into two basic groups based on the physical nature of the measured quantity: electric sensors and non-electric sensors. The word "fizičkoj" in the answer refers to the physical nature of the measured quantity.

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• 44.

### Impulsno napajanje senzora se koristi da bi se eliminisao uticaj

• A.

Jednosmernog ili naizmeničnog signala greške

• B.

Jednosmernog signala greške

• C.

Naizmeničnog signala greške

B. Jednosmernog signala greške
Explanation
The correct answer is "jednosmernog signala greške" (one-way error signal). Impulse power supply for sensors is used to eliminate the influence of one-way error signals, which can be either direct current or alternating current signals.

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• 45.

### Merni pretvarač je celina koja se ____________________(može ne može) upotrebiti samostalno

može
Explanation
The correct answer is "može". This is because the phrase "može ne može" means "can or cannot", indicating that the merni pretvarač can be used independently.

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• 46.

### ____________ senzori energiju za svoj rad uzimaju iz medijuma čije stanje održavaju(mere)

aktivni
Explanation
The given statement suggests that the sensors obtain energy for their functioning from the medium in which they operate, and they also maintain or measure the state of that medium. The term "aktivni" in Serbian translates to "active" in English. Therefore, the correct answer is "active," indicating that the sensors are actively involved in obtaining energy and maintaining the state of the medium.

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• 47.

### Niz elemenata mernog sistema koji čine pojedinačnu putanju signala od senzora do izlaznog elementa zove se ______________________

merni lanac
Explanation
The correct answer is "merni lanac." In Serbian, "merni lanac" translates to "measurement chain." This refers to the collection of elements in a measurement system that form the path of the signal from the sensor to the output element. The measurement chain includes components such as sensors, transducers, amplifiers, filters, and displays that work together to measure and display the desired quantity.

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• 48.

### Sa ciljem uspešnijeg prenosa, obrade ili zapisivanja, neelektrične merene veličine se preslikavaju na _________________

električne
Explanation
In order to achieve a more successful transmission, processing, or recording, non-electrical measured quantities are converted into electrical signals. This is done because electrical signals are easier to manipulate and transmit compared to non-electrical signals.

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• 49.

### Merni i upravljački uređaji različitog stepena složenosti, posredstvom kojih se ostvaruje sprega sa procesom, predstavljau_______________jedinice specijalnog računara

spoljne
Explanation
The given answer "spoljne" is correct because it completes the sentence in a grammatically correct way. It suggests that "Merni i upravljački uređaji različitog stepena složenosti, posredstvom kojih se ostvaruje sprega sa procesom, predstavljau spoljne jedinice specijalnog računara." This translates to "Measurement and control devices of different levels of complexity, through which a connection with the process is established, represent external units of a special computer."

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• 50.

### Senzori u kojima se ostvaruje pretvaranje merene neelektrične veličine u električnu koja predstavlja jedan od parametara električne mreže: otpornost, induktivnost ili kapacitivnost su:

• A.

Pasivni i aktivni senzori

• B.

Pasivni senzori

• C.

Aktivni senzori Back to top