Menu
Home / ECE / Analog Electronics :: Section 13

ECE :: Analog Electronics

Analog Electronics - Section 1
Analog Electronics - Section 2
Analog Electronics - Section 3
Analog Electronics - Section 4
Analog Electronics - Section 5
Analog Electronics - Section 6
Analog Electronics - Section 7
Analog Electronics - Section 8
Analog Electronics - Section 9
Analog Electronics - section-1
Analog Electronics - Section 10
Analog Electronics - Section 11
Analog Electronics - Section 12
Analog Electronics - Section 13
Analog Electronics - Section 14
Analog Electronics - Section 15
Analog Electronics - Section 16
Analog Electronics - Section 17
Analog Electronics - Section 18
Analog Electronics - Section 19
Analog Electronics - Section 20
Analog Electronics - Section 21
Analog Electronics - section-22
Analog Electronics - Section-23

  1. A transistor is said to be in a quiescent state when

    2. A.
    the amplitude of input and output signal is equal
    B.
    the phase of input and output signal is identical
    C.
    no signal is applied to the input
    D.
    the transistor is unbiased

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. According to Barkhausen criteria in order to sustain the oscillations

    3. A.
    loop gain of the circuit must be negligible
    B.
    loop gain of the circuit must be equal to unity
    C.
    the phase shift around the circuit must be 180°
    D.
    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. A Wien bridge oscillator uses

    4. A.
    negative feedback
    B.
    positive feedback
    C.
    both negative and positive feedback
    D.
    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. In the above case, what will be the value of capacitor to obtain 100 kHz frequency?

    5. A.
    0.0065 pF
    B.
    0.0130 pF
    C.
    0.0260 pF
    D.
    0.520 pF

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. Equal amplitude ac signals are given as inputs to both inverting and given as inputs to both inverting and non-inverting terminals of an op-amp. The output will be zero when the phase difference between inputs is

    6. A.
    0°
    B.
    90°
    C.
    180°
    D.
    270°

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. Which of the following can be used to isolate a low impedance from a high impedance source?

    7. A.
    Emitter follower
    B.
    p filter
    C.
    Darlington pair
    D.
    Any of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. A class C amplifier uses

    8. A.
    high Q tuned circuit
    B.
    low Q tuned circuit
    C.
    untuned circuit
    D.
    either (b) or (c)

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. In figure

    9. A.
    the collector currents of T1 and T2 are equal
    B.
    the collector current of T1 is more than that of T2
    C.
    the collector current of T1 is double that of T2
    D.
    the collector currents of T2 is more than that of T1

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. A three-section RC phase shift oscillator has R = 10K ohms and C = 0.001 μF. If the oscillator is to be made variable using the same value of R, what should be the value of capacitor to obtain a frequency if 1 kHz?

    10. A.
    636 pF
    B.
    180 pF
    C.
    65 pF
    D.
    30 pF

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. The input to negative clamper has a peak value of Vp. Then in the output the positive and negative peaks are nearly

    11. A.
    0 and -2 V respectively
    B.
    Vp and -Vp respectively
    C.
    2 Vp and 0 respectively
    D.
    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers