Chapter 2 TELEPHONY MCQs

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1. A telephone receiver uses a permanent magnet in order to:





2. In telephony, at the transmitter side sound energy is converted into:





3. In telephony, at the receiver side electrical energy is converted into:





4. The instrument that consists of a transmitter & a receiver is called:





5. Receiver does the function of transmitter:





6. When the side tone is completely absent, the telephone appears as:





7. It is an impulse sending device:





8. In a telephone receiver, a permanent magnet is:





9. When a telephone handset is removed from its rest position, the subscriber’s line loop is:





10. The first automatic telephone system was introduced by:





11. Almon B Strowger introduced the exchange:





12. The moving contacts of the selector are called:





13. The unit of telephone traffic is called:





14. In the NWD system different cities are connected together by microwave links, the microwaves used are in the range of:





15. A subscriber is connected to an NWD network by dialing the digit:





16. The gateway exchange is an international:





17. The wiper assembly in the uni-selector switch moves only in:





18. The wiper assembly in the Two Motion selector switch moves in:





19. A large number of telephone lines are interconnected with each other through the:





20. Telephone Receiver is basically a:





21. Tone dialing produces:





22. The unit of telephone traffic is:





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