Home / ECE / Electronic Devices and Circuits :: Section-18

ECE :: Electronic Devices and Circuits

  1. The below diagram is __________


  2. A.
    Half wave Rectifier
    B.
    Full wave Rectifier
    C.
    Bridge Rectifier
    D.
    None of these

  3. Which of the following are the disadvantages of half wave rectifier
  4. A.
    High ripple factor (1.21)
    B.
    low ratio of rectification (0.406) & low TUF (0.287)
    C.
    D.C Saturation of transformer
    D.
    all the above

  5. The below diagram is __________


  6. A.
    Half wave Rectifier
    B.
    Full wave Rectifier
    C.
    Bridge Rectifier
    D.
    None of these

  7. The below diagram is __________


  8. A.
    Half wave Rectifier
    B.
    Full wave Rectifier
    C.
    Bridge Rectifier
    D.
    None of these

  9. ________are electronic circuits which give constant DC output voltage, irrespective of variations in Input Voltage V, current drawn by the load I from output terminals
  10. A.
    Rectifier
    B.
    Filter
    C.
    Regulator
    D.
    None of these

  11. The below figures represents ____


  12. A.
    ppn , npn
    B.
    pnp , npn
    C.
    npp , ppn
    D.
    nnp , pnp

  13. _____ is a device in which there is a transfer of resistance from input side which is forward biased (low resistance) to output side which is reverse biased (high resistance)
  14. A.
    Diode
    B.
    Transistor
    C.
    Rectifier
    D.
    Regulator

  15. Transistor is a ______ terminal device
  16. A.
    1
    B.
    2
    C.
    3
    D.
    4

  17. Which of the following regions are part of the output characteristics of a transistor?
  18. A.
    Active
    B.
    Cutoff
    C.
    Saturation
    D.
    All the above

  19. In which of the following region, both the collector base & base emitter junctions are forward biased ?
  20. A.
    Active
    B.
    Cutoff
    C.
    Saturation
    D.
    All the above