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2 papers · 104401

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2024 1044012024 V4 104401

2024104401

B.Tech 4th Semester Examination, 2024

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option/answer the following (Any seven question only):

Ask AI

  1. Q1.1

    JFET can be operated with

    a)

    negative gate only

    b)

    gate voltage only

    c)

    positive as well as negative gate voltage

    d)

    none of the above

    Ask AI

  2. Q1.2

    Which power amplifier has the highest collector efficiency

    a)

    C

    b)

    A

    c)

    B

    d)

    AB

    Ask AI

  3. Q1.3

    Which amplifier is used for 180-degree phase shift

    a)

    differential amplifier

    b)

    non inverting amplifier

    c)

    inverting amplifier

    d)

    None of the above

    Ask AI

  4. Q1.4

    A MOSFET has three terminals, namely

    a)

    cathode, anode, grid

    b)

    source, gate, drain

    c)

    emitter, base, collector

    d)

    none of the above

    Ask AI

  5. Q1.5

    The maximum efficiency of resistance loaded class B power amplifier is

    a)

    5%

    b)

    50%

    c)

    30%

    d)

    None of the above

    Ask AI

  6. Q1.6

    A JFET is also called _______ transistor

    a)

    unipolar

    b)

    bipolar

    c)

    injunction

    d)

    none of the above

    Ask AI

  7. Q1.7

    In a phase shift oscillator, the frequency determining elements are

    a)

    L and C

    b)

    R, L and C

    c)

    R and C

    d)

    None of the above

    Ask AI

  8. Q1.8

    The leakage current across a pn junction is due to

    a)

    Minority carriers

    b)

    Majority carriers

    c)

    Junction capacitance

    d)

    None of the above

    Ask AI

  9. Q1.9

    An oscillator converts

    a)

    a.c. power into d.c. power

    b)

    a.c. power into a.c. power

    c)

    mechanical power into a.c. power

    d)

    none of the above

    Ask AI

  10. Q1.10

    In a transistor

    a)

    IE=IC−IBI_E = I_C - I_B

    b)

    IB=IC+IEI_B = I_C + I_E

    c)

    IC=IE+IBI_C = I_E + I_B

    d)

    IE=IC+IBI_E = I_C + I_B

    Ask AI

Q.2 Solve both questions :

Ask AI

  1. Q2.1

    In a full wave rectifier, the input is from 30-0-30V transformer. The load and diode forward resistances are 100$ \Omega $ and 10$ \Omega $ respectively. Calculate the average voltage, dc output power, ac input power, rectification efficiency and percentage regulation.

    Ask AI

  2. Q2.2

    Explain the working of positive clamping circuit.

    Ask AI

Q.3 Solve both questions :

Ask AI

  1. Q3.1

    Draw the common emitter circuit and sketch the input and output characteristics. Also explain active region, cutoff region and saturation region by indicating them on the characteristic curve.

    Ask AI

  2. Q3.2

    With a neat circuit diagram explain the Voltage Divider Bias circuit by giving its exact analysis.

    Ask AI

Q.4 Solve both questions :

Ask AI

  1. Q4.1

    Explain the characteristics of an Ideal Op-Amp. Mention some of the applications of Op-Amp.

    Ask AI

  2. Q4.2

    Explain R-2R ladder DAC with example?

    Ask AI

Q.5 Solve both questions :

Ask AI

  1. Q5.1

    Explain Successive type ADC with neat circuit diagram.

    Ask AI

  2. Q5.2

    Describe the construction and operation of JFET and draw its characteristics.

    Ask AI

Q.6 Solve both questions :

Ask AI

  1. Q6.1

    Explain Colpitts oscillator with Circuit diagram and derive its frequency.

    Ask AI

  2. Q6.2

    Explain RC coupled transistor amplifier with neat circuit diagram in a middle frequency Range.

    Ask AI

Q.7 Solve both questions :

Ask AI

  1. Q7.1

    Explain RC- phase shift oscillator using op-amp and derive its frequency.

    Ask AI

  2. Q7.2

    Describe the construction and operation of depletion type MOSFET and draw its characteristics.

    Ask AI

Q.8 Solve both questions :

Ask AI

  1. Q8.1

    Describe class A Power Amplifier. Derive the expression for its maximum conversion Efficiency.

    Ask AI

  2. Q8.2

    Explain Wien bridge oscillator using op-amp and derive its frequency.

    Ask AI

Q.9 Solve both questions :

Ask AI

  1. Q9.1

    Explain MOSFET as an amplifier?

    Ask AI

  2. Q9.2

    Describe class B Power Amplifier. Derive the expression for its maximum conversion Efficiency.

    Ask AI

2024V4104401

B.Tech 4th Semester Examination, 2024

03 Hours70 marks

Instructions

  • The marks are indicated in the right-hand margin.
  • There are NINE questions in this paper.
  • Attempt FIVE questions in all.
  • Question No. 1 is compulsory.

Q.1 Choose the correct option/answer the following (Any seven question only):

Ask AI

  1. Q1.1

    JFET can be operated with

    a)

    negative gate only

    b)

    gate voltage only

    c)

    positive as well as negative gate voltage

    d)

    none of the above

    Ask AI

  2. Q1.2

    Which power amplifier has the highest collector efficiency

    a)

    C

    b)

    A

    c)

    B

    d)

    AB

    Ask AI

  3. Q1.3

    Which amplifier is used for 180-degree phase shift

    a)

    differential amplifier

    b)

    non inverting amplifier

    c)

    inverting amplifier

    d)

    None of the above

    Ask AI

  4. Q1.4

    A MOSFET has three terminals, namely

    a)

    cathode, anode, grid

    b)

    source, gate, drain

    c)

    emitter, base, collector

    d)

    none of the above

    Ask AI

  5. Q1.5

    The maximum efficiency of resistance loaded class B power amplifier is

    a)

    5%

    b)

    50%

    c)

    30%

    d)

    None of the above

    Ask AI

  6. Q1.6

    A JFET is also called _______ transistor

    a)

    unipolar

    b)

    bipolar

    c)

    injunction

    d)

    none of the above

    Ask AI

  7. Q1.7

    In a phase shift oscillator, the frequency determining elements are

    a)

    L and C

    b)

    R, L and C

    c)

    R and C

    d)

    None of the above

    Ask AI

  8. Q1.8

    The leakage current across a pn junction is due to

    a)

    Minority carriers

    b)

    Majority carriers

    c)

    Junction capacitance

    d)

    None of the above

    Ask AI

  9. Q1.9

    An oscillator converts

    a)

    a.c. power into d.c. power

    b)

    a.c. power into a.c. power

    c)

    mechanical power into a.c. power

    d)

    none of the above

    Ask AI

  10. Q1.10

    In a transistor

    a)

    IE=IC−IBI_E = I_C - I_B

    b)

    IB=IC+IEI_B = I_C + I_E

    c)

    IC=IE+IBI_C = I_E + I_B

    d)

    IE=IC+IBI_E = I_C + I_B

    Ask AI

Q.2 Solve both questions :

Ask AI

  1. Q2.1

    In a full wave rectifier, the input is from 30-0-30V transformer. The load and diode forward resistances are 100$ \Omega $ and 10$ \Omega $ respectively. Calculate the average voltage, dc output power, ac input power, rectification efficiency and percentage regulation.

    Ask AI

  2. Q2.2

    Explain the working of positive clamping circuit.

    Ask AI

Q.3 Solve both questions :

Ask AI

  1. Q3.1

    Draw the common emitter circuit and sketch the input and output characteristics. Also explain active region, cutoff region and saturation region by indicating them on the characteristic curve.

    Ask AI

  2. Q3.2

    With a neat circuit diagram explain the Voltage Divider Bias circuit by giving its exact analysis.

    Ask AI

Q.4 Solve both questions :

Ask AI

  1. Q4.1

    Explain the characteristics of an Ideal Op-Amp. Mention some of the applications of Op-Amp.

    Ask AI

  2. Q4.2

    Explain R-2R ladder DAC with example?

    Ask AI

Q.5 Solve both questions :

Ask AI

  1. Q5.1

    Explain Successive type ADC with neat circuit diagram.

    Ask AI

  2. Q5.2

    Describe the construction and operation of JFET and draw its characteristics.

    Ask AI

Q.6 Solve both questions :

Ask AI

  1. Q6.1

    Explain Colpitts oscillator with Circuit diagram and derive its frequency.

    Ask AI

  2. Q6.2

    Explain RC coupled transistor amplifier with neat circuit diagram in a middle frequency Range.

    Ask AI

Q.7 Solve both questions :

Ask AI

  1. Q7.1

    Explain RC- phase shift oscillator using op-amp and derive its frequency.

    Ask AI

  2. Q7.2

    Describe the construction and operation of depletion type MOSFET and draw its characteristics.

    Ask AI

Q.8 Solve both questions :

Ask AI

  1. Q8.1

    Describe class A Power Amplifier. Derive the expression for its maximum conversion Efficiency.

    Ask AI

  2. Q8.2

    Explain Wien bridge oscillator using op-amp and derive its frequency.

    Ask AI

Q.9 Solve both questions :

Ask AI

  1. Q9.1

    Explain MOSFET as an amplifier?

    Ask AI

  2. Q9.2

    Describe class B Power Amplifier. Derive the expression for its maximum conversion Efficiency.

    Ask AI

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