Practice Quiz in Wire and Wireless Communications System Part 44

Online Practice Quiz in Wire and Wireless Communications System part 44 as one of the Communications Engineering topic.

Quiz in Wire and Wireless Communications System

This is the Online Practice Quiz in Wire and Wireless Communications System Part 44 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 XLIV of the Online Practice Quiz

Quiz in Wire and Wireless Communications System

Question 431. The talker hears a returned portion of the signal as an echo, what is the round-trip time of delay for an echo to quite annoying?

A. 15 msec

B. 25 msec

C. 35 msec

D. 45 msec


Question 432. He developed the first instrument that transmitted music over a wire.

A. Philipp Reis

B. Antonio Meucci

C. Thomas Edison

D. Almon Strowger


Question 433. A device used to measure speech volume

A. volume unit meter

B. volume milliammeter

C. volume pulse meter

D. volume intensity meter


Question 434. The process used to improve a basic telephone channel is called

A. line turnaround

B. line conditioning

C. line sensing

D. line improvement


Question 435. The frequency range of maximum voice energy is between

A. 150 and 300 Hz

B. 300 and 3400 Hz

C. 250 and 500 Hz

D. 250 and 500 Hz


Question 436. A telephone call completed within a single local exchange is called

A. intraoffice call

B. intraexchange call

C. intraswitch call

D. Any of these


Question 437. It is the primary source of transmission errors in data circuits

A. impulse noise

B. crosstal

C. gain hits

D. interference


Question 438. The oldest of the automatic switching system

A. manual switching

B. step-by-step

C. common control

D. Electronic


Question 439. An exact reproduction of a document or picture provided at the receiving end.

A. television

B. telecommunication

C. facsimile transmission

D. mobile communication


Question 440. POCSAG stands for

A. Post Office Code Standardization Advisory Group

B. Post Office Code System Advisory Group

C. Paging Operation Code Standardization Advisory Group

D. Paging Operation Code System Advisory Group

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