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Electronic Circuit

Quiz by afidah malek

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13 questions
Show answers
  • Q1
    Which of the following is required for oscillation?
    Both BA > 1 and the phase shift around the feedback network must be 180º.
    None of the above
    The phase shift around the feedback network must be 180º
    BA>1
    30s
  • Q2
    The feedback signal in a(n) ________ oscillator is derived from a capacitive voltage divider in the LC circuit.
    Phase shift
    Colpitt
    Crystal
    Hartley
    30s
  • Q3
    The feedback signal in a(n) ________ oscillator is derived from an inductive voltage divider in the LC circuit.
    Colpitt
    Amstrong
    Hartley
    Crystal
    30s
  • Q4
    This circuit is ___________oscillator.
    Question Image
    phase shift
    amstrong
    hartley
    colpitt
    30s
  • Q5
    This circuit is a ________ oscillator.
    Question Image
    amstrong
    Colpitt
    hartley
    crystal
    30s
  • Q6
    Sinusoidal oscillators operate with ________ feedback.
    negative
    both
    positive
    30s
  • Q7
    Only the condition A = ________ must be satisfied for self-sustained oscillations to result.
    1
    none above
    0
    -1
    30s
  • Q8
    In order to start up, a feedback oscillator requires
    no feedback.
    unity feedback equal to 1.
    negative feedback less than 1.
    positive feedback greater than 1.
    30s
  • Q9
    The function of quartz crystals used in oscillators as
    diode action
    semiconductor effect
    piezoeletric effect
    transistor action
    30s
  • Q10
    Refer to this figure. Calculate the resonant frequency.
    Question Image
    1.126khz
    6.17khz
    23.9Mhz
    14.1Mhz
    120s
  • Q11
    Tank circuit for an oscillator having two capacitor of 24nF and 270nF respectively connected in parallel with a inductor of 5mH. Determine the oscillation frequency the circuit
    15.16KHz
    4.15KHz
    4.15MHz
    15.16MHz
    120s
  • Q12
    Which of the following is required for oscillation?
    Both BA > 1 and the phase shift around the feedback network must be 180º.
    None of the above
    The phase shift around the feedback network must be 180º
    BA>1
    30s
  • Q13
    Which of the following is required for oscillation?
    Both BA > 1 and the phase shift around the feedback network must be 180º.
    The phase shift around the feedback network must be 180º
    None of the above
    BA>1
    30s

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