AM formulas Quiz

AM formulas Quiz

University

20 Qs

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AM formulas Quiz

AM formulas Quiz

Assessment

Quiz

Other

University

Practice Problem

Hard

Created by

SYED ECE

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

  1. Mira is working on a project where she needs to transmit a signal. She has a carrier signal c(t)=100cos(2π×1,000t) that she wants to modulate using a sinusoidal signal m(t)=50cos⁡(2π×50t). What is the modulation index for her project?

0.3

0.5

0.7

1

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

  1. Ishika is working on a project where she needs to determine the total power of an AM signal. She knows that the carrier power is 100 W, and the modulation index is 0.8. Can you help her calculate the total power of the AM signal?

132

165

145

234

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. What is the modulation index for a carrier signal c(t)=200cos(2π×2,000t) modulated by a signal m(t)=30cos(2π×100t)?

0.25

0.2

0.15

0.1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. Avni is working on a project where she needs to calculate the total power of an AM signal. She knows that the carrier power is 50 W and the modulation index is 1.2. Can you help her find the total power of the AM signal?

75

100

110

86

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

  1. Krish is experimenting with a radio transmitter. If the modulation index is 0.5 and the carrier frequency is 1,000 Hz, what is the frequency of the modulating signal if the total bandwidth is 2 kHz?

500 Hz

1,000 Hz

1,500 Hz

2,000 Hz

6.

FILL IN THE BLANK QUESTION

1 min • 1 pt

  1. Rohan is experimenting with an AM wave in his physics lab. He measures the maximum voltage (Vmax) to be 10 V and the minimum voltage (Vmin) to be 2 V. Can you help him calculate the modulation index?

7.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

  1. Explain how sidebands are formed in AM and calculate the frequencies of the upper and lower sidebands for a 1 MHz carrier modulated by a 10 kHz signal.

1010khz,990khz

1010khz,970khz

1000khz,990khz

1020khz,890khz

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