MCQ in Wire and Wireless Communications System Part 12 – Answers

Below are the answers key for the Multiple Choice Questions in Wire and Wireless Communications System Part 12.

551. Area

552. Coil inductance

553. On-hook

554. 50 msec

555. To order clearing of connection

556. Subscriber No.

557. Subscriber loop

558. Inter-office trunk

559. Common channel signalling

560. Call-second

561. 0.01

562. 2

563. 108 kHz

564. 600 channels

565. Quantizing noise

566. A and B

567. Attenuation limits

568. A or B

569. Wet- Dry

570. Star

571. 12

572. NOTA

573. Current during on hook

574. TDM

575. Impedance mismatch

576. 4

577. Impulse

578. 30 db

579. -85 dBm

580. EBHC

581. Lost Calls Delayed

582. MDF

583. more than twice

584. supergroup

585. 2 AF tones

586. Echo suppressor

587. None of these

588. 4500 ft.

589. 4.18

590. Progressive

591. 50 mm

592. Less

593. Call Forwarding

594. Common

595. Private Automatic Branch Exchange

596. A telephone line connecting two C.O.’s

597. 0 to 4000 Hz

598. Multiplexing

599. Uses a separate channel for signalling only

600. Any of these

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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