Below are the answers key for the Multiple Choice Questions in Modulation – MCQs Part 18.

851. Modulation

852. The carrier frequency changes.

853. Demodulation

854. Modulator

855. Multiplication

856. The modulation index

857. Information signal is distorted

858. m = 1

859. Envelope

860. Vm > Vc

861. 80.6 %

862. Sidebands

863. 876.5 and 883.5 kHz

864. Frequency Domain

865. Carrier

866. 1.6 W

867. 25 %

868. 85 W

869. 70 %

870. 507 W

871. Sidebands

872. DSB

873. One sideband

874. Less spectrum space is used

875. Depends upon the use

876. 300 Hz to 3 kHz

877. 9 kHz

878. Frequency-shift keying

879. Frequency conversion

880. Convertor

881. 3.2 MHz

882. Pulse code modulation

883. 769.2 W

884. Peak envelope power

885. Independent sideband emission

886. Analog multiplication

887. Tuned circuit

888. Having the carrier vary a resistance

889. Variable resistance

890. PIN diode

891. Low-level modulation

892. 96 V

893. 12 W

894. Demodulator

895. Diode mixer

896. Balanced modulator

897. Both a and b

898. Lattice Modulator

899. Switches

900. DSB

### Online Questions and Answers Series

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

**Modulation MCQs**

**MCQs from Number 1 – 50**Answer key:

**PART I**

**MCQs from Number 51 – 100**Answer key:

**PART II**

**MCQs from Number 101 – 150**Answer key:

**PART III**

**MCQs from Number 151 – 200**Answer key:

**PART IV**

**MCQs from Number 201 – 250**Answer key:

**PART V**

**MCQs from Number 251 – 300**Answer key:

**PART VI**

**MCQs from Number 301 – 350**Answer key:

**PART VII**

**MCQs from Number 351 – 400**Answer key:

**PART VIII**

**MCQs from Number 401 – 450**Answer key:

**PART IX**

**MCQs from Number 851 – 900**Answer key:

**PART XVIII**