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ECE :: Analog Electronics

  1. In the CE circuit shown in figure the slope of ac load line will be


  2. When the circuit is switched on, the loop gain of a Wien bridge oscillator is

  3. A.
    1
    B.
    more than 1
    C.
    less than 1
    D.
    about 0.5

  4. The op-amp circuit shown in the figure is a filter. The type of filter and its cut off type of filter and its cut off frequency are respectively.

  5. A.
    high Pass, 1000 rad/sec
    B.
    low Pass, 100 rad/sec
    C.
    high Pass, 10000 rad/sec
    D.
    low pass, 10000 rad/sec

  6. In a capacitor filter, the time constant RLC should be small.

  7. A.
    True
    B.
    False

  8. A 741 type op-amp has a gain bandwidth product of 1 MHz. A non-inverting amplifier using this op-amp and having a voltage gain of 20 dB will exhibit a -3dB bandwidth of

  9. A.
    50 kHz
    B.
    100 kHz
    C.
    D.

  10. In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half the secondary winding is 40 V. If diodes are ideal, the average output voltage is

  11. A.
    40 V
    B.
    25.5 V
    C.
    20 V
    D.
    2.55 V

  12. In the circuit of figure, PIV can be up to

  13. A.
    Em
    B.
    2 Em
    C.
    0.5 Em
    D.
    2 Em