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Test: Series-Parallel Interconnection of Two Port Network


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15 Questions MCQ Test Network Theory (Electric Circuits) | Test: Series-Parallel Interconnection of Two Port Network

Test: Series-Parallel Interconnection of Two Port Network for Electrical Engineering (EE) 2023 is part of Network Theory (Electric Circuits) preparation. The Test: Series-Parallel Interconnection of Two Port Network questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Series-Parallel Interconnection of Two Port Network MCQs are made for Electrical Engineering (EE) 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Series-Parallel Interconnection of Two Port Network below.
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Test: Series-Parallel Interconnection of Two Port Network - Question 1

For the circuit given below, the value of z21 parameter is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 1



Test: Series-Parallel Interconnection of Two Port Network - Question 2

Consider a cube having resistance R on each of its sides. For this non-planar graph, the number of independent loop equations are _______________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 2

We know that the number of equations is given by,
L = B – N + 1
Where, B = Number of Branches, N = Number of Nodes
Here, B = 12 and N = 8.
So, L = 12 – 8 + 1 = 5.

Test: Series-Parallel Interconnection of Two Port Network - Question 3

Consider a series RL circuit in which current 12 A is flowing through R and current 16 A is flowing through L. The current supplied by the sinusoidal current source I is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 3

Current I (t) is given by,

Test: Series-Parallel Interconnection of Two Port Network - Question 4

Two coils X and Y have self-inductances of 5 mH and 10 mH and mutual inductance of 3 mH. If the current in coils X change at a steady rate of 100 A/s, the emf induced in coil Y is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 4

The emf is given by,

Hence, the emf induced in coil Y is given by 0.3 V.

Test: Series-Parallel Interconnection of Two Port Network - Question 5

The Thevenin’s equivalent of a network is a 10 V source in series with 2 Ω resistances. If a 3 Ω resistance is connected across the Thevenin’s equivalent is _____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 5

The Thevenin equivalent voltage is given by,

And the Thevenin equivalent Resistance is given by,

Test: Series-Parallel Interconnection of Two Port Network - Question 6

A parallel RLC circuit with R1 = 20, L1 = 1/100 and C1 = 1/200 is scaled giving R2 = 104, L2 = 10-4 and C2, the value of C2 is ___________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 6


Test: Series-Parallel Interconnection of Two Port Network - Question 7

Consider an RL series circuit having resistance R = 3 Ω, inductance L = 3 H and is excited by 6V. The current after a long time after closing of switch is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 7

At t = ∞ the circuit has effectively two 6Ω resistances in parallel

Given voltage = 6 V
So, current = 2 A.

Test: Series-Parallel Interconnection of Two Port Network - Question 8

For the circuit given below, the value of z11 parameter is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 8



∴ [z] = [1.775 + j4.26; -1.775 – j4.26; -1.775 – j4.26; 1.775 – j5.739] Ω.

Test: Series-Parallel Interconnection of Two Port Network - Question 9

Given two voltages, 50 ∠0 V and 75 ∠- 60° V. The sum of these voltages is ___________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 9

The voltages can be written in the form,
50 + j 0.75∠-60°
= 37.5 – j 64.95
So, sum = (50 + 37.5) – j 64.95
= 87.5 – j 64.95 = 109∠-36.6°.

Test: Series-Parallel Interconnection of Two Port Network - Question 10

Consider a circuit having resistances 16 Ω and 30 Ωis excited by a voltage V. A variable resistance R is connected across the 16 Ω resistance. The power dissipated in 30 Ω resistance will be maximum when value of R is __________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 10

We know that,
When R = 0, circuit current = V/30A
And Power dissipated = V2/30 Watts.
This is the maximum possible value which occurs for R = 0 Ω.

Test: Series-Parallel Interconnection of Two Port Network - Question 11

A 50 Hz current has an amplitude of 25 A. The rate of change of current at t = 0.005 after i = 0 and is increasing is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 11

The current i (t) is given by,
i = 25 sin 314.16 t and di/dt = 250 X 314.16 cos⁡ωt
Now, at t = 0.005, I = 25 X 314.16 cos (314.16 X 0.005)
= 0.

Test: Series-Parallel Interconnection of Two Port Network - Question 12

A magnetic circuit has an iron length of 100 cm and air gap length 10 cm. If μr = 200 then which of the following is true?

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 12

We know that, MMF for air

Where B is the magnetic field intensity.

Test: Series-Parallel Interconnection of Two Port Network - Question 13

Barletts Bisection Theorem is applicable to ___________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 13

A symmetrical network can be split into two halves. So the z parameters of the network are symmetrical as well as reciprocal of each other. Hence Barletts Bisection Theorem is applicable to Symmetrical networks.

Test: Series-Parallel Interconnection of Two Port Network - Question 14

The energy stored in a coil is 108 J. The power dissipated instantaneously across the blades of switch after it is opened in 10 ms is ____________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 14

Power dissipated instantaneously across the blades of the switch is given by,

Given that, Energy = 108 J and time = 10 X 10-3

Test: Series-Parallel Interconnection of Two Port Network - Question 15

If the diameter of a wire is doubled, the current carrying capacity of the wire is ___________

Detailed Solution for Test: Series-Parallel Interconnection of Two Port Network - Question 15

Since diameter is doubled, area of cross-section becomes four times. Current carrying capacity is proportional to area of cross-section.

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