Communication Engineering MCQs with answers Page - 5

Here, you will find a collection of MCQ questions on Communication Engineering. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

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Q. In US AMPS, 416 channels are allocated to various operators with 10 kHz guard band and channel between them is 30 kHz. What is the spectrum allocation given to each operator?

  • (A) 12.5 khz
  • (B) 30 khz
  • (C) 12.5 mhz
  • (D) 30 mhz

A

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Q. TDMA systems transmit in a continuous way.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. are utilized to allow synchronization of the receivers between different slots and frames.

  • (A) preamble
  • (B) data
  • (C) guard bits
  • (D) trail bits

A

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Q. Which of the following is not true for TDMA?

  • (A) single carrier frequency for single user
  • (B) discontinuous data transmission
  • (C) no requirement of duplexers
  • (D) high transmission rates

A

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Q. Because of transmissions in TDMA, the handoff process in

  • (A) continuous, complex
  • (B) continuous, simple
  • (C) discontinuous, complex
  • (D) discontinuous, simple

A

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Q. synchronization overhead is required in TDMA due to transmission.

  • (A) high, burst
  • (B) high, continuous
  • (C) low, burst
  • (D) no, burst

A

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Q. TDMA allocates a single time per frame to different users.

  • (A) true
  • (B) false
  • (C) ---
  • (D) ---

A

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Q. of TDMA system is a measure of the percentage of transmitted data that contains information as opposed to providing overhead for the access scheme.

  • (A) efficiency
  • (B) figure of merit
  • (C) signal to noise ratio
  • (D) mean

A

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Q. What is the time duration of a bit if data is transmitted at 270.833 kbps in the channel?

  • (A) 270.833 s
  • (B) 3 μs
  • (C) 3.692 μs
  • (D) 3.692 s

A

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Q. US digital cellular system based on CDMA was standardized as

  • (A) is-54
  • (B) is-136
  • (C) is-95
  • (D) is-76

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