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    Part B & Part C Questions - Unit Wise: Ec8251 Circuit Analysis

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    Anonymous Ndsvh2so
    This document provides a list of practice questions for the EC8251 Circuit Analysis exam for the April/May 2019 semester. It includes 49 questions across 5 units: Unit I covers basic circuit analysis techniques like mesh current analysis, nodal analysis, and Thevenin's theorem. Unit II focuses on network theorems. Unit III is about RLC circuits and their properties. Unit IV examines transient responses in RLC circuits. Unit V deals with phasor diagrams and AC circuit analysis. The questions are intended to help students prepare for the upcoming exam on this subject. They cover a wide range of topics and analysis methods relevant to circuit theory.

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    Download as PDF, TXT or read online from Scribd

    Part B & Part C Questions - Unit Wise: Ec8251 Circuit Analysis

    Uploaded by

    Anonymous Ndsvh2so
    124 views4 pages
    This document provides a list of practice questions for the EC8251 Circuit Analysis exam for the April/May 2019 semester. It includes 49 questions across 5 units: Unit I covers basic circuit analysis techniques like mesh current analysis, nodal analysis, and Thevenin's theorem. Unit II focuses on network theorems. Unit III is about RLC circuits and their properties. Unit IV examines transient responses in RLC circuits. Unit V deals with phasor diagrams and AC circuit analysis. The questions are intended to help students prepare for the upcoming exam on this subject. They cover a wide range of topics and analysis methods relevant to circuit theory.

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    Ec8251 Rejinpaul Iq April May 2019-1

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    This document provides a list of practice questions for the EC8251 Circuit Analysis exam for the April/May 2019 semester. It includes 49 questions across 5 units: Unit I covers basic circuit analysis techniques like mesh current analysis, nodal analysis, and Thevenin's theorem. Unit II focuses on network theorems. Unit III is about RLC circuits and their properties. Unit IV examines transient responses in RLC circuits. Unit V deals with phasor diagrams and AC circuit analysis. The questions are intended to help students prepare for the upcoming exam on this subject. They cover a wide range of topics and analysis methods relevant to circuit theory.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    124 views4 pages

    Part B & Part C Questions - Unit Wise: Ec8251 Circuit Analysis

    Uploaded by

    Anonymous Ndsvh2so
    This document provides a list of practice questions for the EC8251 Circuit Analysis exam for the April/May 2019 semester. It includes 49 questions across 5 units: Unit I covers basic circuit analysis techniques like mesh current analysis, nodal analysis, and Thevenin's theorem. Unit II focuses on network theorems. Unit III is about RLC circuits and their properties. Unit IV examines transient responses in RLC circuits. Unit V deals with phasor diagrams and AC circuit analysis. The questions are intended to help students prepare for the upcoming exam on this subject. They cover a wide range of topics and analysis methods relevant to circuit theory.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 4

    Anna University Exams April / May 2019 – Regulation 2017

    Rejinpaul.com Unique Important Questions – 2nd Semester BE/BTECH


    EC8251 CIRCUIT ANALYSIS
    PART B & PART C QUESTIONS – UNIT WISE
    Unit I

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    1. Find the current flowing in the 40Ω Resistor, R3

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    2. For the a.c. network shown in Figure determine, using mesh-current analysis, (a) the mesh currents
    I1 and I2 (b) the current flowing in the capacitor, and (c) the active power delivered by the 100∠0◦V
    voltage source
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    3. State incidence matrix and its properties. Also describe the relationship between KCL and incidence
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    matrix
    4. Analyze the given electrical network and draw its topological graph, write its incidence matrix, tie-set
    matrix, link current transformation equation and branch currents.
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    5. Find the current through each resistor of the circuit shown in fig, using nodal analysis
    6. For the a.c. network shown in Figure, determine the current flowing in each branch using Kirchhoff’s
    laws.

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    7. Design Dual circuit for the given figure.
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    Unit II
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    1. For the circuit shown in Figure 5.23 calculate (a) the value of resistor Rx such that the total power
    dissipated in the circuit is 2.5kW, and (b) the current flowing in each of the four resistors.
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    2. For the arrangement shown in Figure find the current Ix.

    3. Power dissipated in 4 Ω resistor ,P=I2R=(0.571)2 (4)=1.304W Use Thévenin’s theorem to determine


    the current flowing in the 3 Ω resistance of the network shown in Figure (a). The voltage source has
    negligible internal resistance.
    4. Use Norton’s theorem to determine the current I flowing in the 4 Ω resistance shown in Figure (a).

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    5. Explain the thevenin’s equivalent circuit for the network shown below

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    Unit III
    1. Discuss the bandwidth of a series RLC circuit as a function of resonant frequency.
    2. Interpret the expression for the following: (i) Half power frequencies (ii) Selectivity (iii) Quality factor
    and its effect on bandwidth.
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    3. How will you evaluate the conductively coupled coils?


    4. Two coils connected in series have an equivalent inductance of 10H. When the connections of one
    coil is reversed, the effective inductance is 6H. If the co-efficient of coupling is 0.6, calculate the self-
    inductance of each coil and mutual inductance.
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    5. A coil of inductance 5 mH and resistance 10 Ω is connected in parallel with a 250 nF capacitor across
    a 50 V variable-frequency supply. Determine (a) the resonant frequency, (b) the dynamic resistance,
    (c) the current at resonance, and (d) the circuit Q-factor at resonance.
    6. A series L–R–C circuit has a sinusoidal input voltage of maximum value 12 V. If inductance, L = 20 mH,
    resistance, R = 80 Ω, and capacitance, C = 400 nF, determine (a) the resonant frequency, (b) the value
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    of the p.d. across the capacitor at the resonant frequency, (c) the frequency at which the p.d. across
    the capacitor is a maximum, and (d) the value of the maximum voltage across the capacitor.
    7. A series RLC circuit has R=10Ω, L=0.54H and C=40µF. The applied voltage is 100V. Find (i) resonant
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    frequency (ii) quality factor (iii) upper half power frequency (iv) lower half power frequency (v)
    bandwidth (vi) voltage across inductance at resonance.
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    Unit IV
    1. Explain in details about the step response of series RLC circuit.
    2. A series RL circuit with initial current I0 in the inductor is connected to a dc voltage V at t = 0. Derive
    the expression for instantaneous current through the Inductor for t>0.
    3. Derive the expression for instantaneous current through the inductor for t>0. (or) A series RC circuit
    with initial current I0 in the inductor is connected to a dc voltage V at t = 0.
    4. A sinusoidal voltage of 10 sin 100 is connected in series with a switch and R= 10 ohms and L=0.1H.If
    the switch is closed at t=0. Solve the transient current i(t).
    5. (i)Describe natural response and transient response (ii) in the circuit shown in figure, identify the
    time when the voltage across the capacitor becomes 25 V, after the switch is closed at t=0.
    6. Formulate the expression for the current responses of RLC series circuit with sinusoidal excitation.
    Assume that the circuits is working in critical damping condition
    7. A series RL circuit With R=30 Ω, and L=15H has a constant voltage V=60v applied at t=0 as shown in

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    figure. Assess the current I, the voltage across resistor and the voltage across the inductor.
    Unit V
    1. Show that (i) Current through purely resistive circuit is in phase the applied voltage. (ii) Current
    through pure inductance lags applied voltage by 90 o (iii) Current through pure capacitance leads
    applied voltage by 90o.
    2. Show that i) Current lags voltage in R-L series circuit ii) Current leads voltage in R-C series circuit

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    3. Draw the phasor diagram for a series RLC circuit energized by a sinusoidal voltage showing the
    relative position of current, component voltage and applied voltage for the following case a) When
    XL > Xc b) When XL < Xc c) When XL = Xc.

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    4. An alternating current i= 414 Sin (2π x 50 x t) A is passed through a series circuit of a resistance of
    100 and an inductance of 0.31831 H. find the expression for the instantaneous values of voltage
    across, a. The resistance , b. Inductance c. Capacitance
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    5. The wave form of the voltage and current of a circuit are given by e= 120 Sin (314 t) i= 10 Sin (314 t
    + π∕6) Calculate the value of resistance, capacitance which is connected in series to form the circuit.
    Also, Draw wave forms for current, voltage and phasor diagram. Calculate power consumed by the
    circuit.
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    6. Outline the characterization of two port networks in terms of Z, Y and h parameters.


    7. For the given bridge T- network, develop the driving point admittance Y11 and transfer admittance
    Y21 with a 2ohm load resistor connected across port 2.
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    Questions Are Expected for University Exams This May or may Not Be Asked for Exams
    Please do not Copy (or) Republish This Questions, Students if You Find the Same Questions in Other
    Sources, Kindly report us to rejinpaulteam@gmail.com

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