You dont have javascript enabled! Please enable it! Practice Quiz in Wire and Wireless Communications System Part 2

Practice Quiz in Wire and Wireless Communications System Part 2

Quiz in Wire and Wireless Communications System

This is the Online Practice Quiz in Wire and Wireless Communications System Part 2 as one of the Communications Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies, Communications Books, Journals and other Communications References.

Continue Part II of the Online Practice Quiz

Quiz in Wire and Wireless Communications System

Question 11. RG-B8 cable has a loss of about ______ dB at cellular frequencies up to 15 ft. length.

A. 2

B. 1

C. 4

D. 3


Question 12. The corresponding frequency for digit 7 in the touch tone telephone is

A. 770 & 1477 Hz

B. 852 & 1209 Hz

C. 852 & 1336 Hz

D. 770 & 1336 Hz


Question 13. If two FM signals of different strengths are received on the same frequency

A. One steady heterodyne will appear in the AM output

B. Both will appear in the AF output

C. Only the stronger will appear in the AF output

D. Neither signal will be intelligence unless the weaker signal is at least 10 times


Question 14. _______ is selecting the best value of a parameter from a continuum of possible values when gives a collection if imperfect measurements

A. Estimation

B. Traffic

C. Decision

D. Nyquist


Question 15. If the spacing of a two-wire open air transmission line is 12 inches and the conductor diameter is 0.25 inch, the characteristic impedance is

A. 547 Ω

B. 357 Ω

C. 273 Ω

D. 300 Ω


Question 16. A kind of recording used in facsimile.

A. Electrolytic recording

B. Electrothermal recording

C. Electropercussive recording

D. Electrostatic recording


Question 17. Which of the following is commonly used wire for subscriber loop design?

A. AWG # 19

B. AWG # 18

C. AWG # 30

D. AWG # 33


Question 18. How many simultaneous calls does each DECT system can support?

A. 96

B. 12

C. 24

D. 49


Question 19. The impedance of the quarterwave transformer used to match a 600 Ω line to a 300 Ω load is

A. 382 Ω

B. 424 Ω

C. 565 Ω

D. 712 Ω


Question 20. All of the cell base stations are linked together by _______ which serves as the central office and management node for the group.

A. MTS

B. IMTS

C. MSTO

D. MTSO

List of Practice Quizzes


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