This is the Online Practice Quiz in Wire and Wireless Communications System Part 51 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 LI of the Online Practice Quiz
Quiz in Wire and Wireless Communications System
Question 501. He designed and built the first transmitter and receiver for a telephone set.
Question 502. What tones carry map information using facsimile?Question 503. A signalling technique wherein a number of voice paths is carried over one common channel instead of having individual voice channels.Question 504. For crosstalk to be considered intelligible, at least ________ words are intelligible to the listener in a seven second period.Question 505. What is used to transmit more than one conversation over a path?Question 506. The signal heard on the telephone line that indicates readiness of the central office in receiving address or telephone number.Question 507. dBa is a noise unit which uses a tone of 1000 Hz and a power level ofQuestion 508. By definition, speech power is equal to v.u. reading minus 1.4 dB plus log of N, where N isQuestion 509. That part of the telephone network between the telephone instrument at the subscriber premises and the central office equipment is called the _______________.Question 510. A recorder helix in facsimile?