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Practice Quiz in Wire and Wireless Communications System Part 52

(Last Updated On: December 21, 2017)Quiz in Wire and Wireless Communications System

This is the Online Practice Quiz in Wire and Wireless Communications System Part 52 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 LII of the Online Practice Quiz

Quiz in Wire and Wireless Communications System

Question 511. How many point-to-point links are required to connect 50 telephones together?

A. 2255

B. 1225

C. 2250

D. 1552

Question 512. Class of switching office that could provide service to geographical regions varying in size from part of the state to all of several states, depending on population density.

A. sectional center

B. end office

C. regional center

D. toll center

Question 513. A signal sent from the central office to a subscriber whenever there is an incoming call

A. busy signal

B. ringing signal

C. ringback signal

D. dial tone

Question 514. This refers to loop AC reference frequency measured in decibels

A. Signalling limits

B. Resistance limits

C. Attenuation limits

D. All of these

Question 515. Where is a fax scanner found?

A. at the end of fax signals

B. at origin of fax signals

C. at receive end of fax system

D. at the input of a fax transmitter

Question 516. The average intensity in one or more traffic paths occupied in the busy hour by one 2-minute call for an aggregate duration of two minutes.

A. CCS

B. Cm

C. Erlang

D. EBHC

Question 517. PABX stands for

A. Private All-purpose Broadcasting Exchange

B. Private Automatic Branch Exchange

C. Public Access Bidirectional Exchange

D. Public Address Broadcasting Exchange

Question 518. The first commercial switchboard was installed in

A. Connecticut

B. Boston

C. Pennsylvania

D. Washington

Question 519. The number to be dialed or called to reach a subscriber in the same local network or numbering area is

A. Local code

B. Area code

C. Toll access code

D. Subscriber No.

Question 520. A device that combines the transmitter and the receiver to operate over the same wire pair.

A. balancing network

B. diaphragm

C. hybrid

D. relay

List of Practice Quizzes

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