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Consumer Electronics by S. P. Bali

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Descriptive Questions

  1. What is the need for a switching system?
  2. With the help of a suitable sketch, briefly explain the working of a selecting switch.
  3. Explain the significance of central points and exchange.
  4. Write short notes on :
    1. Manual exchange
    2. Automatic exchange
    3. Computer-controlled exchange
    4. Call-accounting equipment
    5. Step-by-step principle
    6. Uniselector
  5. Explain the difference between a rotary-dial telephone and a push-button telephone.
  6. With the help of a suitable sketch, explain the principle of switching by electromechanical uniselector of one-from-ten outlets.
  7. Differentiate between a uniselector and a two-motion selector.
  8. Explain a three-digit numbering scheme with the help of a two-motion selector.
  9. What are the features of step-by-step selectors? ...

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