Inductance of coil is directly proportional to square of

number and spacing between adjacent turns

An electric current is the:

Pressure difference between two poles

Random movement of electrons in a conductor

Movement of free electrons predominately in one direction

Pressure difference between two poles

The power that causes drift of electrons

Consider the following two types of non-identical sources:1. Voltage source e1(t) and e2(t)2. Current source i1(t) and i2(t)Regarding the mode of their connection in a circuit.

1 cannot be connected in series, and 2 cannot be connected in parallel

1 cannot be connected in parallel, and 2 cannot be connected in series

1 cannot be connected in series, and 2 cannot be connected in parallel

Both 1 and 2 cannot be connected in series

Both 1 and 2 cannot be connected in parallel

An reactive power in an A.C. circuit is given by the expression

\({{\rm{V}}_{{\rm{rms}}}}.{{\rm{I}}_{{\rm{rms\;}}}}\cos \phi \)

\({{\rm{V}}_{{\rm{av}}}}{{\rm{I}}_{{\rm{av}}}}\)

\(\frac{{{{\rm{V}}_{{\rm{max}}}}.{{\rm{I}}_{{\rm{max}}}}}}{2}\)

\({{\rm{V}}_{{\rm{rms}}}}.{{\rm{I}}_{{\rm{rms}}}}\sin \phi \)

A network is said to be linear, if only if

The response is proportional to the excitation function

The principle of superposition applies

The principle of homogeneity applies

The principles of superposition and homogeneity applies

According to Kirchhoff's Current Law (KCL), the algebraic sum of the current of all branches passing through the junction is always equal to

the sum of the voltage across the junction

the product of voltage and resistance entering the junction

An ideal voltage source has _______ source resistance.

Equal amount of load resistance

Assertion (A): All the mesh currents are necessarily the loop currents but all the loop currents may not be the mesh current.Reason (R): The mesh current is the current which flows only around the perimeter of a mesh.

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true, but (R) is not the correct explanation of (A).

439 + Mcqs in Network Elements in Network Theory Page 2 McqOptions

51.	If 5 A of electric current flows for a period of 3 minutes, what will be the amount of charge transferred?
A.	600 C
B.	60 C
C.	100 C
D.	900 C
Answer» E.

Discussion

52.	Inductance of coil is directly proportional to square of
A.	thickness of wire
B.	spacing between adjacent turns
C.	number and spacing between adjacent turns
D.	number of turns
Answer» E.

Discussion

53.	A network has 12 branches and 5 nodes. Find the number of independent loops in the network.
A.	7
B.	8
C.	18
D.	17
Answer» C. 18

Discussion

54.	Find the resistance of a 1 km strip of copper with rectangular cross section 2.5 cm by 0.05 cm, if ρ = 1.75 × 10-8 Ωm.
A.	0.04 Ω
B.	14 Ω
C.	0.14 Ω
D.	1.4 Ω
Answer» E.

Discussion

55.	How many 6 μF, 200 V capacitors are needed to make a capacitor of 18 μF, 600 V?
A.	18
B.	9
C.	3
D.	27
Answer» E.

Discussion

56.	Determine the voltage (in V) between point A and B for the given electrical circuit.
A.	40
B.	20
C.	60
D.	30
Answer» C. 60

Discussion

57.	220 V, 100 W and 220 V, 40 W bulbs are connected in series across 220 V d.c. supply, which bulb will burn with brighter light:
A.	100 W
B.	40 W
C.	Both will have same brightness
D.	Both will not burn
Answer» C. Both will have same brightness

Discussion

58.	A current of 2 A flows for 10 hours through a 100 ohm resistor. The energy consumed by the resistor will be
A.	0.4 kWh
B.	4 kWh
C.	2 kWh
D.	0.02 kWh
Answer» C. 2 kWh

Discussion

59.	Find VA in the network shown
A.	80/7 V
B.	7/80 V
C.	40/3 V
D.	3/40 V
Answer» B. 7/80 V

Discussion

60.	An electric current is the:
A.	Random movement of electrons in a conductor
B.	Movement of free electrons predominately in one direction
C.	Pressure difference between two poles
D.	The power that causes drift of electrons
Answer» C. Pressure difference between two poles

Discussion

61.	Find the voltage across resistor R1?
A.	2.5 V
B.	2 V
C.	3.5 V
D.	2.078 V
Answer» E.

Discussion

62.	Estimate the resistance of the filament of a 50 W, 100 V bulb
A.	200 Ω
B.	100 Ω
C.	50 Ω
D.	150 Ω
Answer» B. 100 Ω

Discussion

63.	An inductance of 1 H carrying a current of 2 A will store the energy of
A.	2 Watts
B.	2 joules
C.	4 Watts
D.	4 joules
Answer» C. 4 Watts

Discussion

64.	Consider the following two types of non-identical sources:1. Voltage source e1(t) and e2(t)2. Current source i1(t) and i2(t)Regarding the mode of their connection in a circuit.
A.	1 cannot be connected in parallel, and 2 cannot be connected in series
B.	1 cannot be connected in series, and 2 cannot be connected in parallel
C.	Both 1 and 2 cannot be connected in series
D.	Both 1 and 2 cannot be connected in parallel
Answer» B. 1 cannot be connected in series, and 2 cannot be connected in parallel

Discussion

65.	An air condenser with capacitance 0.001 μF is connected to a dc voltage of 200 V. The energy stored in the condenser will be
A.	10 μ Joules
B.	20 μ Joules
C.	20 Joules
D.	10 Joules
Answer» C. 20 Joules

Discussion

66.	Closed circuit technique is based on
A.	superposition theorem
B.	Thevenins theorem
C.	Kirchhoff’s current law
D.	Kirchhoff’s voltage law
Answer» E.

Discussion

67.	A battery supplies 6 joules of energy per coulomb then the e.m.f. of the battery is:
A.	4 V
B.	6 V
C.	3 V
D.	5 V
Answer» C. 3 V

Discussion

68.	For the circuit shown above the value of r connected between C and D is such that the equivalent resistance of the circuit by looking into circuit through terminals A and B is r only. Then the value of r is
A.	6 Ω
B.	2 Ω
C.	4 Ω
D.	3 Ω
Answer» C. 4 Ω

Discussion

69.	If there is break in the continuity of the circuit it is called as ______.
A.	Open circuit
B.	Load circuit
C.	Short circuit
D.	Ground fault
Answer» B. Load circuit

Discussion

70.	A device stores 500 J of energy and releases this energy in the form of an electric current of 40 A which has a duration of 15 msec. Determine the average voltage across the terminals of the device
A.	860 V
B.	790 V
C.	833 V
D.	800 V
Answer» D. 800 V

Discussion

71.	Find the node voltage at node 1 in the following circuit.
A.	23.7 V
B.	43.7 V
C.	33.7 V
D.	53.7 V
Answer» D. 53.7 V

Discussion

72.	A heater takes a current of 7 A from a 230 V source for 12 h. Calculate the energy consumed (in kWh).
A.	2.76 kWh
B.	1.61 kWh
C.	38.64 kWh
D.	19.32 kWh
Answer» E.

Discussion

73.	If the resistor follows Ohm's law, what is it called?
A.	Linear resistor
B.	Parasitic resistor
C.	Non-linear resistor
D.	Non-parasitic resistor
Answer» B. Parasitic resistor

Discussion

74.	If the 5Ω resistor is short, what is the effective resistance between A and B?
A.	1Ω
B.	2Ω
C.	7Ω
D.	11/6Ω
Answer» B. 2Ω

Discussion

75.	An reactive power in an A.C. circuit is given by the expression
A.	\({{\rm{V}}_{{\rm{rms}}}}.{{\rm{I}}_{{\rm{rms\;}}}}\cos \phi \)
B.	\({{\rm{V}}_{{\rm{av}}}}{{\rm{I}}_{{\rm{av}}}}\)
C.	\(\frac{{{{\rm{V}}_{{\rm{max}}}}.{{\rm{I}}_{{\rm{max}}}}}}{2}\)
D.	\({{\rm{V}}_{{\rm{rms}}}}.{{\rm{I}}_{{\rm{rms}}}}\sin \phi \)
Answer» E.

Discussion

76.	A network is said to be linear, if only if
A.	The response is proportional to the excitation function
B.	The principle of superposition applies
C.	The principle of homogeneity applies
D.	The principles of superposition and homogeneity applies
Answer» E.

Discussion

77.	Energy stored by a coil is doubled when its current is increased by
A.	100%
B.	50%
C.	41.4%
D.	25%
Answer» D. 25%

Discussion

78.	It is known that two 2 kΩ, 2 W resistors are connected is parallel. Find the combined resistance and wattage rating,
A.	2 kΩ 4W
B.	1 kΩ, 4W
C.	1 kΩ, 2W
D.	2 kΩ, 2W
Answer» C. 1 kΩ, 2W

Discussion

79.	A voltage of 2000 V exists across 1 cm insulating space between two parallel conducting plates. An electron of charge 1.6 × 10-19 coulomb is introduced into space. The force on the electron is
A.	182 × 10-26 N
B.	3.2 × 10-14 N
C.	1.6 × 10-19 N
D.	4.5 × 1026 N
Answer» C. 1.6 × 10-19 N

Discussion

80.	Find the value of \(V_R\) in the given network.
A.	12 V
B.	- 12 V
C.	- 50 V
D.	50 V
Answer» D. 50 V

Discussion

81.	If w is the energy in Joules and t is time in seconds, then the power associated with those quantities is:
A.	w/q
B.	t/w
C.	\(\frac{{dq}}{{dt}}\)
D.	w/t
Answer» E.

Discussion

82.	Conductivity is reciprocal of:
A.	resistivity
B.	electric density
C.	electric field strength
D.	resistance
Answer» B. electric density

Discussion

83.	How much power (in W) will be dissipated by 10 ohms resistor, when the current through the resistor in 3 A?
A.	30
B.	40
C.	60
D.	90
Answer» E.

Discussion

84.	Determine the current flowing through the 5 Ω resistor in the following circuit.
A.	10.523 A
B.	5 A
C.	14.79 A
D.	3.9 A
Answer» D. 3.9 A

Discussion

85.	A 3 μF capacitor is charged by a constant current source of 2 μA for 6 seconds. The voltage across the capacitor at the end of changing will be:
A.	3 V
B.	4 V
C.	6 V
D.	9 V
Answer» C. 6 V

Discussion

86.	Potential difference across a 0.04 F capacitance is 4V. Charge stored in it will be:
A.	0.1 C
B.	1C
C.	0.16 C
D.	0.016 C
Answer» D. 0.016 C

Discussion

87.	Following are the inductances for different Geometries used in Microwaves:Match the following Lists:List-I List-IIInductor Inductance in(pH/mil)(a) Wire inductor(i) L = 31.25 N2D(b) Circular Loop inductor(ii) \(L = 8.5\sqrt A {\left( N \right)^{\frac{5}{3}}} \times {10^3}\)(c) Square Spiral inductor(iii) \(L = 5..08l\left[ {\ln \left( {\frac{t}{{w + t}}} \right) - 4.76} \right]\)(d) Circular Spiral inductor(iv) \(L = 5.08l\left[ {\ln \left( {\frac{l}{d}} \right) + 0.386} \right]\) Correct codes are:
A.	a-iv, b-iii, c-ii, d-i
B.	a-i, b-iii, c-iv, d-ii
C.	a-ii, b-i, c-iii, d-iv
D.	a-i, b-iv, c-iii, d-ii
Answer» B. a-i, b-iii, c-iv, d-ii

Discussion

88.	Consider the following statements:Any element is redundant if connected ina) series with an ideal current sourceb) parallel with an ideal current sourcec) series with an ideal voltage sourced) parallel with an ideal voltage sourceWhich of the above statements are correct?
A.	a and c
B.	a and d
C.	b and c
D.	b and d
Answer» C. b and c

Discussion

89.	According to Kirchhoff's Current Law (KCL), the algebraic sum of the current of all branches passing through the junction is always equal to
A.	Infinity
B.	the sum of the voltage across the junction
C.	the product of voltage and resistance entering the junction
D.	zero
Answer» E.

Discussion

90.	A 3-phase distribution network is as shown above. The resistance across the terminals RB, BY and RY are
A.	25.5 Ω, 31.2 Ω and 33.6 Ω
B.	27.5 Ω, 30.17 Ω and 33.67 Ω
C.	28.5 Ω, 32.3 Ω and 34.5 Ω
D.	21.2 Ω, 42.3 Ω and 45.6 Ω
Answer» C. 28.5 Ω, 32.3 Ω and 34.5 Ω

Discussion

91.	Find the currents I1, I2, I3 using mesh analysis.
A.	5/9 A, 20/9 A, 10/9 A
B.	55/9 A, 10/9 A, 20/9 A
C.	55/9 A, 20/9 A, 5/9 A
D.	20/9 A, 10/9 A, 55/9 A
Answer» D. 20/9 A, 10/9 A, 55/9 A

Discussion

92.	An ideal voltage source is one which has:
A.	infinite internal resistance
B.	zero internal resistance
C.	very high internal resistance
D.	very low internal resistance
Answer» C. very high internal resistance

Discussion

93.	In the network shown determine I.
A.	4.1 A
B.	2.5 A
C.	5.2 A
D.	1.4 A
Answer» E.

Discussion

94.	A 10Ω resistor is connected to a 6V cell having internal resistance 2Ω. What is the voltage across the 10Ω resistor?
A.	4V
B.	6V
C.	5V
D.	2V
Answer» D. 2V

Discussion

95.	Calculate the maximum safe current that can pass through the 1.8 kΩ resistor rated at 0.5 W.
A.	16 mA
B.	0.16 mA
C.	16 μA
D.	16 A
Answer» B. 0.16 mA

Discussion

96.	An ideal voltage source has _______ source resistance.
A.	Equal amount of load resistance
B.	Very high load resistance
C.	Small amount
D.	Zero
Answer» E.

Discussion

97.	In an element from t = 0 s to t = 5 s, 12 C of charge is entered. Find the flow of current in that element.
A.	12 A
B.	60 A
C.	1.2 A
D.	2.4 A
Answer» E.

Discussion

98.	A 16 mA current source has an internal resistance of 10 k ohm. How much current will flow in a 2.5 k ohm load connected across its terminals
A.	4.2 mA
B.	6 mA
C.	11.5 mA
D.	12.8 mA
Answer» E.

Discussion

99.	Determine the equivalent resistance (in Ohms) for the circuit given below.
A.	2
B.	4
C.	6
D.	9
Answer» C. 6

Discussion

100.	Assertion (A): All the mesh currents are necessarily the loop currents but all the loop currents may not be the mesh current.Reason (R): The mesh current is the current which flows only around the perimeter of a mesh.
A.	Both (A) and (R) are true and (R) is the correct explanation of (A).
B.	Both (A) and (R) are true, but (R) is not the correct explanation of (A).
C.	(A) is true, but (R) is false.
D.	(A) is false, but (R) is true.
Answer» B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).

Discussion

Explore topic-wise MCQs in Network Theory.

If 5 A of electric current flows for a period of 3 minutes, what will be the amount of charge transferred?

Inductance of coil is directly proportional to square of

A network has 12 branches and 5 nodes. Find the number of independent loops in the network.

Find the resistance of a 1 km strip of copper with rectangular cross section 2.5 cm by 0.05 cm, if ρ = 1.75 × 10-8 Ωm.

How many 6 μF, 200 V capacitors are needed to make a capacitor of 18 μF, 600 V?

Determine the voltage (in V) between point A and B for the given electrical circuit.

220 V, 100 W and 220 V, 40 W bulbs are connected in series across 220 V d.c. supply, which bulb will burn with brighter light:

A current of 2 A flows for 10 hours through a 100 ohm resistor. The energy consumed by the resistor will be

Find VA in the network shown

An electric current is the:

Find the voltage across resistor R1?

Estimate the resistance of the filament of a 50 W, 100 V bulb

An inductance of 1 H carrying a current of 2 A will store the energy of

Consider the following two types of non-identical sources:1. Voltage source e1(t) and e2(t)2. Current source i1(t) and i2(t)Regarding the mode of their connection in a circuit.

An air condenser with capacitance 0.001 μF is connected to a dc voltage of 200 V. The energy stored in the condenser will be

Closed circuit technique is based on

A battery supplies 6 joules of energy per coulomb then the e.m.f. of the battery is:

For the circuit shown above the value of r connected between C and D is such that the equivalent resistance of the circuit by looking into circuit through terminals A and B is r only. Then the value of r is

If there is break in the continuity of the circuit it is called as ______.

A device stores 500 J of energy and releases this energy in the form of an electric current of 40 A which has a duration of 15 msec. Determine the average voltage across the terminals of the device

Find the node voltage at node 1 in the following circuit.

A heater takes a current of 7 A from a 230 V source for 12 h. Calculate the energy consumed (in kWh).

If the resistor follows Ohm's law, what is it called?

If the 5Ω resistor is short, what is the effective resistance between A and B?

An reactive power in an A.C. circuit is given by the expression

A network is said to be linear, if only if

Energy stored by a coil is doubled when its current is increased by

It is known that two 2 kΩ, 2 W resistors are connected is parallel. Find the combined resistance and wattage rating,

A voltage of 2000 V exists across 1 cm insulating space between two parallel conducting plates. An electron of charge 1.6 × 10-19 coulomb is introduced into space. The force on the electron is

Find the value of \(V_R\) in the given network.

If w is the energy in Joules and t is time in seconds, then the power associated with those quantities is:

Conductivity is reciprocal of:

How much power (in W) will be dissipated by 10 ohms resistor, when the current through the resistor in 3 A?

Determine the current flowing through the 5 Ω resistor in the following circuit.

A 3 μF capacitor is charged by a constant current source of 2 μA for 6 seconds. The voltage across the capacitor at the end of changing will be:

Potential difference across a 0.04 F capacitance is 4V. Charge stored in it will be:

Consider the following statements:Any element is redundant if connected ina) series with an ideal current sourceb) parallel with an ideal current sourcec) series with an ideal voltage sourced) parallel with an ideal voltage sourceWhich of the above statements are correct?

According to Kirchhoff's Current Law (KCL), the algebraic sum of the current of all branches passing through the junction is always equal to

A 3-phase distribution network is as shown above. The resistance across the terminals RB, BY and RY are

Find the currents I1, I2, I3 using mesh analysis.

An ideal voltage source is one which has:

In the network shown determine I.

A 10Ω resistor is connected to a 6V cell having internal resistance 2Ω. What is the voltage across the 10Ω resistor?

Calculate the maximum safe current that can pass through the 1.8 kΩ resistor rated at 0.5 W.

An ideal voltage source has _______ source resistance.

In an element from t = 0 s to t = 5 s, 12 C of charge is entered. Find the flow of current in that element.

A 16 mA current source has an internal resistance of 10 k ohm. How much current will flow in a 2.5 k ohm load connected across its terminals

Determine the equivalent resistance (in Ohms) for the circuit given below.

Assertion (A): All the mesh currents are necessarily the loop currents but all the loop currents may not be the mesh current.Reason (R): The mesh current is the current which flows only around the perimeter of a mesh.