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Unit 1 - Practice Quiz

ELE205

1 Which of the following elements is considered an active element?

A. Resistor
B. Inductor
C. Capacitor
D. Voltage Source

2 A network element is said to be linear if it satisfies:

A. Only the principle of superposition
B. Only the principle of homogeneity
C. Both superposition and homogeneity principles
D. Neither superposition nor homogeneity

3 Which of the following is an example of a unilateral element?

A. Resistor
B. Diode
C. Capacitor
D. Inductor

4 Kirchhoff's Current Law (KCL) is based on the law of conservation of:

A. Energy
B. Charge
C. Momentum
D. Mass

5 Kirchhoff's Voltage Law (KVL) states that the algebraic sum of voltages around any closed path is:

A. Infinity
B. Equal to the source voltage
C. Zero
D. Equal to the sum of currents

6 The internal resistance of an ideal voltage source is:

A. Infinite
B. Zero
C. Very high
D. Dependent on the load

7 The internal resistance of an ideal current source is:

A. Zero
B. Finite
C. Infinite
D. Negative

8 A transmission line is an example of a:

A. Lumped parameter network
B. Distributed parameter network
C. Non-linear network
D. Unilateral network

9 In a bilateral element, the magnitude of current flow:

A. Depends on the polarity of the voltage source
B. Is the same for both directions of applied voltage
C. Is always zero
D. Increases exponentially with voltage

10 Calculate the voltage across in a series circuit with a voltage source and two resistors and using the Voltage Division Rule.

A.
B.
C.
D.

11 Two resistors and are connected in parallel with a total current entering the combination. The current through is given by:

A.
B.
C.
D.

12 Mesh Analysis is primarily based on:

A. Kirchhoff's Current Law
B. Kirchhoff's Voltage Law
C. Ohm's Law only
D. Superposition Theorem

13 Nodal Analysis is primarily based on:

A. Kirchhoff's Current Law
B. Kirchhoff's Voltage Law
C. The reciprocity theorem
D. Maximum power transfer

14 For a network with nodes and branches, the number of independent KCL equations (nodal equations) required is:

A.
B.
C.
D.

15 For a network with nodes and branches, the number of independent KVL equations (mesh equations) required is:

A.
B.
C.
D.

16 Mesh analysis is applicable only to:

A. Planar networks
B. Non-planar networks
C. Both planar and non-planar networks
D. Networks with no sources

17 A Dependent Source is represented by which symbol in circuit diagrams?

A. Circle
B. Diamond
C. Square
D. Triangle

18 If a voltage source in series with a resistance is transformed into an equivalent current source, the value of the current source is:

A.
B.
C.
D.

19 When performing a source transformation from a current source to a voltage source, the parallel resistance becomes:

A. A series resistance with value
B. A series resistance with the same value
C. A parallel resistance with value
D. It is removed from the circuit

20 A VCVS stands for:

A. Voltage Controlled Voltage Source
B. Variable Current Variable Source
C. Voltage Current Voltage Source
D. Variable Controlled Voltage Source

21 Which of the following is true for a Supermesh?

A. It occurs when a voltage source is shared between two meshes
B. It occurs when a current source is shared between two meshes
C. It is used in Nodal Analysis
D. It simplifies the circuit by removing resistors

22 Which of the following is true for a Supernode?

A. It is formed when a current source is between two non-reference nodes
B. It is formed when a voltage source is connected between two non-reference nodes
C. It is formed when a resistor is zero
D. It implies the voltage is zero

23 In a linear network containing multiple independent sources, the response in any element is the algebraic sum of the responses due to each source acting alone. This is the statement of:

A. Thevenin's Theorem
B. Norton's Theorem
C. Superposition Theorem
D. Reciprocity Theorem

24 When applying KVL to a loop, if you traverse a voltage source from the negative terminal to the positive terminal, the term in the equation is usually taken as:

A. Negative (Voltage Drop)
B. Positive (Voltage Rise)
C. Zero
D. Imaginary

25 Which matrix is typically used to represent a system of equations in Nodal Analysis?

A. Impedance Matrix ()
B. Admittance Matrix ()
C. Hybrid Matrix ()
D. Transmission Matrix ()

26 In the mesh analysis matrix form , the diagonal elements represent:

A. The mutual resistance between mesh and
B. The sum of all resistances in mesh
C. The source resistance only
D. The conductance of mesh

27 An ideal voltage source connected in parallel with a resistor is equivalent to:

A. The voltage source alone (from the perspective of external terminals)
B. The resistor alone
C. A current source
D. Zero voltage

28 An ideal current source connected in series with a resistor is equivalent to:

A. The current source alone (from the perspective of external terminals)
B. The resistor alone
C. A voltage source
D. Zero current

29 The relationship describes which circuit element?

A. Resistor
B. Capacitor
C. Inductor
D. Memristor

30 Which of the following elements is non-linear?

A. Carbon composition resistor
B. Air-core inductor
C. Incandescent Lamp filament
D. Paper capacitor

31 In nodal analysis, the reference node is usually assigned a voltage of:

A. 1 V
B. 10 V
C. 0 V
D. Undefined

32 If a circuit has 5 nodes and 7 branches, how many independent loops (mesh equations) are there?

A. 2
B. 3
C. 4
D. 5

33 Conductance () is the reciprocal of:

A. Inductance
B. Capacitance
C. Resistance
D. Voltage

34 A CCVS is a dependent source where:

A. A voltage controls a current
B. A current controls a voltage
C. A voltage controls a voltage
D. A current controls a current

35 Lumped parameter circuits are valid only when:

A. The physical dimensions of the circuit are much larger than the wavelength of the signal
B. The physical dimensions of the circuit are much smaller than the wavelength of the signal
C. The frequency is infinite
D. The circuit contains no active elements

36 When writing mesh equations, if two meshes share a common resistor , the term corresponding to the adjacent mesh current is usually:

A. Positive
B. Negative
C. Zero
D. Squared

37 Can Source Transformation be applied to dependent sources?

A. No, never
B. Yes, provided the controlling variable is external to the source being transformed
C. Yes, provided the controlling variable is inside the source
D. Only for current sources, not voltage sources

38 Which element does NOT store energy?

A. Capacitor
B. Inductor
C. Resistor
D. Battery

39 Two resistors and are in parallel. What is the equivalent resistance?

A.
B.
C.
D.

40 In a node voltage equation, the diagonal term of the admittance matrix is always:

A. Negative
B. The sum of conductances connected to that node (Positive)
C. The difference of conductances
D. Zero

41 A practical voltage source is modeled as:

A. An ideal voltage source in parallel with a resistor
B. An ideal voltage source in series with a resistor
C. An ideal current source in series with a resistor
D. Just a resistor

42 If a network contains only independent current sources, nodal analysis is usually preferred because:

A. Current sources can be directly entered into the current vector
B. Voltage sources are harder to handle
C. Mesh analysis is impossible
D. The matrix size is smaller

43 The algebraic sum of currents entering a node is . What does the negative sign on indicate?

A. is zero
B. is entering the node
C. is leaving the node
D. is an AC current

44 Which of the following equations represents Ohm's Law in terms of conductance ?

A.
B.
C.
D.

45 Power absorbed by a resistor is given by:

A.
B.
C.
D.

46 A voltage source has a terminal voltage of 10V when open-circuited and 9V when supplying 1A. What is its internal resistance?

A.
B.
C.
D.

47 What is the result of connecting two ideal voltage sources of different magnitudes in parallel?

A. The output is the average voltage
B. The output is the sum of voltages
C. This violates KVL and is theoretically impossible
D. The output is the larger voltage

48 What is the result of connecting two ideal current sources of different magnitudes in series?

A. The current is the sum
B. The current is the difference
C. The current is the average
D. This violates KCL and is theoretically impossible

49 The time integral of current is:

A. Voltage
B. Power
C. Energy
D. Charge

50 Which analysis method is best suited for a circuit with many parallel branches and fewer nodes?

A. Mesh Analysis
B. Nodal Analysis
C. Superposition
D. Source Transformation