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ECE :: Analog Electronics

  1. In figure the collector to emitter breakdown voltage of the transistor (βVCEO) should be

  2. A.
    more than VCC
    B.
    more than 0.5 VCC
    C.
    more than VCC + E
    D.
    more than 2 VCC

  3. An amplifier signal is made up of just two frequencies 1000 Hz. The output signal consists of 500 Hz and 25000 Hz frequencies. This may be attributed to

  4. A.
    harmonic distortion
    B.
    intermodulation distortion
    C.
    both (a) and (b)
    D.
    none of the above

  5. If input ac is 10 Vrms, then maximum voltage that will appear across the diode of a half wave rectifier with a capacitor I/P filter will be

  6. A.
    10 V
    B.
    14 V
    C.
    20 V
    D.
    28 V

  7. In figure the voltage gain is

  8. A.
    B.
    re
    C.
    D.

  9. One of the major applications of JFET is in

  10. A.
    switching
    B.
    constant current-source
    C.
    constant voltage-source
    D.
    electron flow regulation

  11. A Hartley oscillator uses

  12. A.
    a tapped capacitor
    B.
    a tapped inductor
    C.
    a tapped inductor for inductive feedback
    D.
    none of the above

  13. Aperture circuit produces __________ in sample hold circuit.

  14. A.
    the total sampling time
    B.
    delay between the instance at which hold command is initiated and the instance at which O/P starts tracking I/P
    C.
    the time taken by O/P to settle within the specified 1% error band, that of the I/P
    D.
    time required by holding capacitor to reach upto the level close to input

  15. A clipper

  16. A.
    adds a dc component to the input signal
    B.
    removes signal voltages above or below a specified value
    C.
    both (a) and (b)
    D.
    either (a) or (b)

  17. In a rectifier circuit the filter capacitance is increased. Then the ripple will

  18. A.
    increase
    B.
    decrease
    C.
    remain the same
    D.
    either (a) or (b)

  19. The circuit in figure is

  20. A.
    positive clamper
    B.
    negative clamper
    C.
    positive peak clipper
    D.
    negative peak clipper