Modulation - MCQs Part XIX - Answers

Answers key for the Compiled MCQs in Modulation Part 19 of the series as one topic in Electronic System and Technologies (Communications Engineering) in the ECE Board Exam.

Answers in Modulation - MCQs Part XIX

Below are the answers key for the Multiple Choice Questions in Modulation - MCQs Part 19.

901. Differential amplifier

902. Crystals

903. Both a and b

904. 2 kHz

905. 2997 and 3003 kHz

906. Phase shift

907. Product detector

908. Mixer

909. Fo + fm

910. Linear summing

911. FET

912. Resonant circuit

913. Amplitude

914. Phase

915. Decreases

916. Frequency

917. Zero crossing points

918. 12.5

919. 5

920. Twice

921. ½

922. PWM

923. Lower Complexity and Cost

924. Excessive use of spectrum space

925. Capture effect

926. 4E

927. Linear devices

928. 66.66

929. Prevent excessive grid current

930. Grid-modulated class C amplifier

931. Increased by 50 percent

932. The lower modulating power required

933. 0.5

934. The discriminator frequency must not be too low, or the system will fail

935. The amplitude of any sideband depends on the modulation index

936.  Lies in the different definitions of the modulation index

937. Equalization is unnecessary

938. 3 mf

939. δ

940. Amplifying the higher audio frequencies

941. Decreased

942. Frequency modulation

943. Lower bandwidth is required

944. Armstrong modulator

945. Transmitter circuits must be more stable, giving better reception

946. A3H

947. There are more balanced modulators; therefore the carrier is suppressed better

948. Mechanical

949. A3H

950. Simplify the frequency stability problem in reception

Online Questions and Answers Series

Following is the list of practice exam test questions in this brand new series:

Modulation MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                 Answer key: PART III
PART 4: MCQs from Number 151 – 200                 Answer key: PART IV
PART 5: MCQs from Number 201 – 250                 Answer key: PART V
PART 6: MCQs from Number 251 – 300                 Answer key: PART VI
PART 7: MCQs from Number 301 – 350                 Answer key: PART VII
PART 8: MCQs from Number 351 – 400                 Answer key: PART VIII
PART 9: MCQs from Number 401 – 450                 Answer key: PART IX
PART 19: MCQs from Number 901 – 950                 Answer key: PART XIX

Complete List of MCQs in Communications Engineering per topic


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