MCQ in Modulation Part 17 – Answers

(Last Updated On: April 21, 2020)

MCQ in Modulation Part 17 | ECE Board Exam

Below are the answers key for the Multiple Choice Questions in Modulation Part 17.

801. 25 kHz

802. 50 kHz

803. modulates the FM carrier

804. double-sideband modulates a subcarrier

805. a 67 kHz subcarrier

806. armstrong system

807. remains the same

808. FM/TV stereo

809. G3E

810. lock

811. any of these

812. bandpass filter

813. modulating signal

814. modulating signal

815. local oscillator

816. frequency-shift keying

817. television

818. a circuit for detecting FM signals

819. television video

820. to overcome noise

821. amplitude

822. TV video

823. narrowband FM

824. 75 kHz or 220 kHz

825. 15 kHz

826. 50 Hz

827. no discrimination against noise

828. error signal

829. AF signal

830. less AF distortion

831. narrow

832. varying AC

833. varying AC

834. varying DC

835. varying DC

836. foster-seeley discriminator

837. stagger-tuned detector

838. ratio

839. 4.5 MHz

840. 10.7 MHz

841. can use crystal oscillator

842. ratio detector

843. reduce noise reception

844. limiting IF and detectors

845. any of these

846. reduce flutter

847. discriminator, limiters, IF, mixer and RF

848. Crosby

849. reactance modulator looks like Xc

850. filter

851. voltage variable capacitor

Questions and Answers in Modulation Series

Following is the list of multiple choice questions in this brand new series:

MCQ in Modulation
PART 1: MCQ from Number 1 – 50                        Answer key: PART 1
PART 2: MCQ from Number 51 – 100                   Answer key: PART 2
PART 3: MCQ from Number 101 – 150                 Answer key: PART 3
PART 4: MCQ from Number 151 – 200                 Answer key: PART 4
PART 5: MCQ from Number 201 – 250                 Answer key: PART 5
PART 6: MCQ from Number 251 – 300                 Answer key: PART 6
PART 7: MCQ from Number 301 – 350                 Answer key: PART 7
PART 8: MCQ from Number 351 – 400                 Answer key: PART 8
PART 9: MCQ from Number 401 – 450                 Answer key: PART 9
PART 10: MCQ from Number 451 – 500                 Answer key: PART 10

Complete List of MCQ in Communications Engineering per topic

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