Q. The system which uses FM for the subcarriers is called _____

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Q. A cable TV service uses a single coaxial cable with a bandwidth of 860 MHz to transmit multiple TV signals to subscribers. Each TV signal is 6 MHz wide. How many channels can be carried?

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Q. Frequency division multiplexing:Frequency slots::time division multiplexing:?

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Q. Serial transmission is not possible without time division multiplexing.

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Q. What device is used to demodulate a time division multiplexed analog wave?

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Q. Which of the following device was used in early TDM/PAM telemetry systems?

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Q. What is the time allocated for each channel if the number of samples per frame is 4 and the frame rate is 100 frames/sec?

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Q. What is the purpose of one shot multivibrator?

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Q. The circuit used to regenerate clock pulses from the transmitted PAM signals is called ____

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Q. What are used to reduce or stop synchronization problems while receiving?

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Q. In a four channel system, all four signals transmitted contain information.

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Q. Which of the following is not an advantage of time division multiplexing?

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Q. Which of the following type of multiplexing uses pulse code modulation?

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Q. Which of the following statements is true with respect to PCM?

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Q. Which of the following is false with respect to PCM?

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Q. A special PCM system uses 16 channels of data, one whose purpose is identification (ID) and synchronization. Find the number of available data channels.

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Q. A special PCM system uses 16 channels of data, one whose purpose is an identification (ID) and synchronization. The word length is 6 bits. Find the number of bits per frame.

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Q. A special PCM system uses 16 channels of data, one whose purpose is an identification (ID) and synchronization. The sampling rate is 3.5 kHz. The word length is 6 bits. Find the serial data rate.

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Q. All local and long-distance connections are digital.

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Q. In a TDD one channel is sufficient for transmission.

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