Below are the answers key for the Multiple Choice Questions in Wire and Wireless Communications System Part 13.
601. Operates using a system of electromechanical switches
602. Alexander Graham Bell
603. Full availability switch
604. Transit Exchange
605. Circuit
606. A two –wire communication circuit between a customer’s premise and the central office
607. Area codes
608. 000 – 999
609. Marker
610. 2000 ohms
611. Half duplex
612. Leased
613. Tandem
614. Supervisory
615. 7.75
616. 3.7 km
617. 9.7 km
618. 50 mm
619. 50 mm
620. Yellow
621. 30 m
622. 125 µsec
623. Blocking
624. 600 mm
625. 3.5 m
626. 16
627. An analog system
628. 10 kHz
629. Increasing the number of standard amplitude
630. Telephone
631. 1876
632. Strowger
633. Handset
634. Carbon
635. Edison
636. Electromagnetic
637. 7
638. Subscriber line interface
639. Side tone
640. Pulse dialing
641. 300 – 3.4 kHz
Questions and Answers in Wire and Wireless Communications System Series
Following is the list of multiple choice questions in this brand new series:
Complete List of MCQ in Communications Engineering per topic
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