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Network Theory Multiple-Choice Questions (MCQs)
Network theory is a part of graph theory in mathematics, computer science, and network science. Network theory provides a set of techniques for analyzing networks (defined as graphs where the nodes or edges possess attributes).
Network Theory MCQs: This section contains multiple-choice questions and answers on the various topics of Network Theory. Practice these MCQs to test and enhance your skills on Network Theory.
List of Network Theory MCQs
1. Which of the following statement is TRUE?
- All electric circuits are electric networks
- All electric networks are electric circuits
- All electric circuits are electric networks and vice versa
- All electric circuits are electric networks but the opposite of this is not True
Answer: D) All electric circuits are electric networks but the opposite of this is not True.
Explanation:
"All electric circuits are electric networks", but the opposite is not always true.
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2. Current is usually denoted by using which of the following symbol?
- C
- V
- I
- Q
Answer: C) I
Explanation:
Current is usually denoted by I.
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3. What is the unit of current?
- Ampere
- Coloumb
- Electrons
- Joule
Answer: A) Ampere
Explanation:
The unit of current is Ampere.
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4. ____ current flows from the source's positive terminal to the source's negative terminal.
- Conventional current
- Electron current
Answer: A) Conventional current
Explanation:
Conventional current flows from the source's positive terminal to the source's negative terminal.
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5. Voltage is measured in the form of ____.
- Joule
- Ampere
- Volt
- Coloumb
Answer: C) Volt
Explanation:
Voltage is measured in the form of a volt.
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6. Which of the following statement is True about power?
- The product of voltage V and current I is power
- The product of potential energy W and current I is power
- The product of voltage V and charge Q is power
- The product of charge Q and current I is power
Answer: A) The product of voltage V and current I is power.
Explanation:
The product of voltage V and current I is power.
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7. What are active network elements?
- Active elements do not supply electricity to other elements in an electric circuit
- Active elements supply electricity to other elements in an electric circuit
Answer: B) Active elements supply electricity to other elements in an electric circuit.
Explanation:
Active network elements supply electricity to other elements in an electric circuit.
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8. Power can be delivered as well as absorbed by ____ elements.
- Active elements
- Passive elements
Answer: A) Active elements
Explanation:
Power can be delivered as well as absorbed by active elements.
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9. Among the examples given below, which one falls under the category of passive elements?
- Current source
- Voltage source
- Inductors
Answer: C) Inductors
Explanation:
Inductors, capacitors, and resistors are examples of passive elements, whereas voltage sources and current sources are examples of active elements.
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10. Which of the following, is not an example of linear elements?
- Inductors
- Capacitor
- Resistor
- Current sources
Answer: D) Current sources
Explanation:
Current sources and voltage sources are examples of non-linear elements whereas Inductors, capacitors, and resistors are examples of linear elements.
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11. ____ Elements are those that enable current to flow in both directions and have the same impedance in either direction.
- Bilateral elements
- Unilateral elements
Answer: A) Bilateral elements
Explanation:
Bilateral Elements are those that enable current to flow in both directions and have the same impedance in either direction.
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12. An ____ source generates a constant voltage across its two terminals.
- Independent voltage
- Independent Current
Answer: A) Independent voltage
Explanation:
An independent voltage source generates a constant voltage across its two terminals.
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13. What describes the V-I characteristics of an ideal voltage source?
- Curve
- Straight line
- Constant line
Answer: C) Constant line
Explanation:
Constant line describes the V-I characteristics of an ideal voltage source.
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14. Dependent sources in network theory are also known as ____.
- Voltages sources
- Controlled sources
- Feedback sources
Answer: B) Controlled sources
Explanation:
Dependent sources in network theory is also known as Controlled sources.
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15. Independent sources in network theory are divided into how many categories?
- 5
- 4
- 3
- 2
Answer: D) 2
Explanation:
Independent sources are classified into two groups:
- Independent Voltage Sources
- Independent Current Sources
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16. Dependent sources in network theory are divided into how many categories?
- 5
- 4
- 3
- 2
Answer: D) 2
Explanation:
Dependent sources are classified into two groups:
- Dependent Voltage Sources
- Dependent Current Sources
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17. Which of the following statement is TRUE?
- The signs '+' and '-' inside a diamond shape signify dependent voltage sources
- The arrow inside a diamond shape signifies dependent voltage sources
- The double dash inside a diamond shape signifies dependent voltage sources
- The Underscore and "+" inside a diamond shape signify dependent voltage sources
Answer: A) The signs '+' and '-' inside a diamond shape signify dependent voltage sources.
Explanation:
The signs '+' and '-' inside a diamond shape signify dependent voltage sources.
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18. Dependent voltage sources in network theory are of how many types?
- 4
- 2
- 5
- 7
Answer: D) 2
Explanation:
Dependent voltage sources are divided into two categories:
- Voltage-Dependent Voltage Source (VDVS)
- Current Dependent Voltage Source (CDVS)
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19. Which of the following statement is TRUE?
- The signs '+' and '-' inside a diamond shape signify dependent current sources
- The arrow inside a diamond shape signifies dependent current sources
- The double dash inside a diamond shape signifies dependent current sources
- The Underscore and "+" inside a diamond shape signify dependent current sources
Answer: B) The arrow inside a diamond shape signifies dependent current sources.
Explanation:
The arrow inside a diamond shape signifies dependent current sources.
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20. The ____ serves as a limiting or regulating element in an electronic circuit.
- Inductor
- Capacitor
- Resistor
Answer: C) Resistor
Explanation:
The resistor serves as a limiting or regulating element in an electronic circuit.
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21. In most electrical circuits, ____ are used to store energy, primarily magnetic energy, when a current flows through them.
- Inductor
- Capacitor
- Resistor
Answer: A) Inductor
Explanation:
In most electrical circuits, inductors are used to store energy, primarily magnetic energy, when a current flows through them.
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22. In electrical engineering, a ____ refers to a passive component that stores energy in the form of an electrostatic field.
- Inductor
- Capacitor
- Resistor
Answer: B) Capacitor
Explanation:
In electrical engineering, a capacitor refers to a passive component that stores energy in the form of an electrostatic field.
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23. What is Kirchhoff's Current Law (KCL)?
- According to Kirchhoff's Current Law (KCL), zero is the algebraic multiplication of currents leaving (or entering) a node
- According to Kirchhoff's Current Law (KCL), one is the algebraic sum of currents leaving (or entering) a node
- According to Kirchhoff's Current Law (KCL), zero is the algebraic integration of currents leaving (or entering) a node
- According to Kirchhoff's Current Law (KCL), zero is the algebraic sum of currents leaving (or entering) a node
Answer: D) According to Kirchhoff's Current Law (KCL), zero is the algebraic sum of currents leaving (or entering) a node.
Explanation:
According to Kirchhoff's Current Law (KCL), zero is the algebraic sum of currents leaving (or entering) a node.
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24. What is the principal node?
- The term "principal node" refers to a node that has three or more circuit elements connected to it
- The term "principal node" refers to a node that has only two circuit elements connected to it
- The term "principal node" refers to a node that has no circuit elements connected to it
Answer: A) The term "principal node" refers to a node that has three or more circuit elements connected to it.
Explanation:
The term "principal node" refers to a node that has three or more circuit elements connected to it.
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25. A node is referred to as a ____ node if there are only two circuit elements connected to it.
- Register node
- Direct node
- Implied node
- Simple node
Answer: D) Simple node
Explanation:
A node is referred to as a simple node if there are only two circuit elements connected to it.
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26. Any closed path that circles a circuit's nodes more than once is referred to as a ____.
- Loop
- Mesh
Answer: A) Loop
Explanation:
Any closed path that circles a circuit's nodes more than once is referred to as a loop.
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27. What is Mesh?
- A closed-circuit path that has more than one internal path is called a mesh
- A closed-circuit path that has at least 1 internal path is called a mesh
- A closed-circuit path that has no internal paths is called a mesh
Answer: C) A closed-circuit path that has no internal paths is called a mesh.
Explanation:
A closed circuit path that has no internal paths is called a mesh.
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28. According to Kirchhoff's Voltage Law (KVL), the algebraic sum of the voltages in a loop or mesh equals ____.
- Infinite
- One
- Negative one
- Zero
Answer: D) Zero
Explanation:
According to Kirchhoff's Voltage Law (KVL), the algebraic sum of the voltages in a loop or mesh equals zero.
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29. Which of the following is the correct situation to choose a nodal analysis method for solving any electrical network?
- When the number of principal nodes is more than the number of electrical-circuit meshes
- When the number of principal nodes is less than the number of electrical-circuit meshes
Answer: B) When the number of principal nodes is less than the number of electrical-circuit meshes.
Explanation:
When the number of principal nodes is less than the number of electrical-circuit meshes.
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30. Which of the following is the correct situation to choose the mesh analysis method for solving any electrical network?
- when the number of meshes is less than the total number of principal electrical circuit nodes
- when the number of meshes is more than the total number of principal electrical circuit nodes
Answer: A) when the number of meshes is less than the total number of principal electrical circuit nodes.
Explanation:
when the number of meshes is less than the total number of principal electrical circuit nodes.
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31. Which of the following method you will choose When the number of meshes equals the number of principal nodes in any electric circuit?
- Mesh analysis
- Nodal analysis
- Both
- None
Answer: C) Both
Explanation:
When the number of meshes equals the number of principal nodes in any electric circuit, we can use either Nodal analysis or Mesh analysis.
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32. A ____ graph exists when there is at least one branch connecting any two nodes in a graph.
- Connected
- Unconnected
- Directed
- Undirected
Answer: A) Connected
Explanation:
A connected graph exists when there is at least one branch connecting any two nodes in a graph.
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33. An ____ graph exists when there is at least one node in the graph that is not connected by even a single branch.
- Connected
- Unconnected
- Directed
- Undirected
Answer: B) Unconnected
Explanation:
An unconnected graph exists when there is at least one node in the graph that is not connected by even a single branch.
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34. Directed graphs are also known as ____.
- Feedback graph
- Isolated graph
- Arrow graph
- Oriented graph
Answer: D) Oriented graph
Explanation:
Directed graphs are also known as oriented graphs.
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35. What is a directed graph?
- A directed graph is one in which all of the branches of a graph are represented by arrows
- A directed graph is one in which all of the branches of a graph are represented by a dash
- A directed graph is one in which all of the branches of a graph are represented by lines
Answer: A) A directed graph is one in which all of the branches of a graph are represented by arrows.
Explanation:
A directed graph is one in which all of the branches of a graph are represented by arrows.
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36. What is an undirected graph?
- An undirected graph is one in which the branches of a graph are represented by arrows
- An undirected graph is one in which the branches of a graph are not represented by arrows
Answer: B) An undirected graph is one in which the branches of a graph are not represented by arrows.
Explanation:
An undirected graph is one in which the branches of a graph are not represented by arrows.
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37. What is Norton's theorem?
- According to Norton's theorem, any complicated linear circuit may be simplified to an equivalent simple circuit with a single current source coupled in series with a single resistor connected to a load
- According to Norton's theorem, any complicated linear circuit may be simplified to an equivalent simple circuit with a single current source coupled in parallel with a single resistor connected to a load
Answer: B) According to Norton's theorem, any complicated linear circuit may be simplified to an equivalent simple circuit with a single current source coupled in parallel with a single resistor connected to a load.
Explanation:
According to Norton's theorem, any complicated linear circuit may be simplified to an equivalent simple circuit with a single current source coupled in parallel with a single resistor connected to a load.
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38. Maximum power transfer theorem states that ____.
- To generate maximum external power through a DC network, the load's resistance must equal the source's resistance for a given load
- To generate maximum external power through an AC network, the load's resistance must equal the source's resistance for a given load
Answer: A) To generate maximum external power through a DC network, the load's resistance must equal the source's resistance for a given load.
Explanation:
To generate maximum external power through a DC network, the load's resistance must equal the source's resistance for a given load.
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39. Electric circuits experience ____ due to the existence of energy-storing devices such as inductors and capacitors.
- Vibrations
- Resonance
- Resilience
- Synchronization
Answer: B) Resonance
Explanation:
Electric circuits experience resonance due to the existence of energy-storing devices such as inductors and capacitors.
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40. How many types of resonance are there?
- 5
- 7
- 2
- 9
Answer: C) 2
Explanation:
There are two types of resonance: Parallel resonance and series resonance.
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41. ____ coupling happens when two coils (or inductors) are physically connected.
- Electrical
- Magnetic
Answer: A) Electrical
Explanation:
Electrical coupling happens when two coils (or inductors) are physically connected.
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42. ____ coupling happens when two coils (or inductors) have no physical connection.
- Metallic
- Electrical
- Magnetic
Answer: C) Magnetic
Explanation:
Magnetic coupling happens when two coils (or inductors) have no physical connection.
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43. How many types of two-port network parameters are there?
- 5
- 4
- 7
- 6
Answer: D) 6
Explanation:
There are 6 types of two-port network parameters.
- Z parameters
- Y parameters
- T parameters
- T' parameters
- h-parameters
- g-parameters
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44. Which of the following two-port network parameter is also known as the impedance parameter?
- Z parameters
- Y parameters
- T parameters
- T' parameters
Answer: A) Z parameters
Explanation:
The Z parameter in the two-port network is also known as the impedance parameter.
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45. What is the unit of the Z parameter?
- Ohm
- Joule
- Volt
- Mho
Answer: A) Ohm
Explanation:
Unit of Z parameter in Ohm.
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46. Which of the following two-port network parameter is also known as an admittance parameter?
- g parameters
- Y parameters
- T parameters
- T' parameters
Answer: B) Y parameters
Explanation:
The Y parameter in the two-port network is also known as the admittance parameter.
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47. What is the unit of the Y parameter?
- Ohm
- Joule
- Volt
- Mho
Answer: D) Mho
Explanation:
Unit of Y parameter in Mho.
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48. What is the other name for the T parameter?
- Transmission parameter
- ABCD parameter
- Total parameter
- A and B both
- A and C both
Answer: D) A and B both
Explanation:
T parameters are called transmission parameters or ABCD parameters.
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49. h parameters are called as ____.
- Hybrid parameter
- Hyperparameter
- High-definition parameter
- Hexadecimal parameter
Answer: A) Hybrid parameter
Explanation:
h parameters are called Hybrid parameters.
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50. Which of the following parameter are called inverse hybrid parameters?
- g parameters
- Y parameters
- T parameters
- T' parameters
Answer: A) g parameters
Explanation:
g-parameters are called inverse hybrid parameters.
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51. The total magnetic flux produced by an inductor is proportional to its ____.
- Voltage
- Current
- Charge
- Time
Answer: B) Current
Explanation:
The total magnetic flux produced by an inductor is proportional to its current, I.
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52. Filters are split into how many categories based on their frequency band?
- 5
- 6
- 3
- 4
Answer: D) 4
Explanation:
Filters are split into four categories based on their frequency band:
- Low Pass Filter
- High Pass Filter
- Band Pass Filter
- Band Stop Filter
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53. All high-frequency components are rejected by which of the following filter?
- Low Pass Filter
- High Pass Filter
- Band Pass Filter
- Band Stop Filter
Answer: A) Low Pass Filter
Explanation:
All additional high-frequency components are rejected (blocked) by a low-pass filter. It only allows low-frequency components.
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54. All low-frequency components are rejected by which of the following filter?
- Low Pass Filter
- High Pass Filter
- Band Pass Filter
- Band Stop Filter
Answer: B) High Pass Filter
Explanation:
All low-frequency components are rejected (blocked) by a high pass filter. It only allows high-frequency components.
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55. Which filter permits (allows) both low and high-frequency components to pass through?
- Low Pass Filter
- High Pass Filter
- Band Pass Filter
- Band Stop Filter
Answer: D) Band Stop Filter
Explanation:
Band stop filter permits (allows) both low and high-frequency components to pass through.
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56. Bandpass filter ____ both low and high-frequency components to pass through.
- Rejects
- Pass
- Divert
Answer: A) Rejects
Explanation:
Bandpass filter rejects both low and high-frequency components to pass through.
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57. Which of the following theorem states that-
"Any linear electrical network with voltage and current sources and resistances can be substituted by an equivalent circuit consisting of a single voltage source connected in series with a single resistor."
- Superposition principle
- Norton's theorem
- Thevenin's theorem
Answer: C) Thevenin's theorem
Explanation:
Thevenin's theorem states that- "Any linear electrical network with voltage and current sources and resistances can be substituted by an equivalent circuit consisting of a single voltage source connected in series with a single resistor."
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58. Kirchhoff has given how many fundamental laws?
- 5
- 4
- 3
- 2
Answer: D) 2
Explanation:
Kirchhoff's Laws are two fundamental laws in network theory. The first law is Kirchhoff's Current Law (KCL), and the second law, is Kirchhoff's Voltage Law (KVL).
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59. Voltage across an inductor and current flowing through it have a ____ relationship.
- Non-linear relationship
- Linear relationship
Answer: B) Linear relationship
Explanation:
Voltage across an inductor and current flowing through it have a linear relationship.
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60. Voltage across the capacitor and current flowing through it have a ____ relationship.
- Non-linear relationship
- Linear relationship
Answer: B) Linear relationship
Explanation:
Voltage across the capacitor and current flowing through it have a linear relationship.
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61. KCL is unaffected (____) by the kind of network elements linked to a node.
- Independent
- Dependent
Answer: A) Independent
Explanation:
KCL is unaffected (independent) by the kind of network elements linked to a node.
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