Which of the following would produce analog signals and which would produce digital signals?
(i) A vibrating tuning fork.

The maximum amplitude of an A.M. wave is found to be 15 V while its minimum amplitude is found to be 3 V. What is the modulation index?

Compute the (LC) product of a tuned amplifier circuit required to generate a carrier wave of 1 MHz for amplitude modulation.

Which of the following would produce analog signals and which would produce digital signals?
(i) A vibrating tuning fork.

Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?

Which of the following would produce analog signals and which would produce digital signals?
(ii) Musical sound due to a vibrating sitar string.

Which of the following would produce analog signals and which would produce digital signals?
(iv) Output of NAND gate.

Which of the following would produce analog signals and which would produce digital signals?
(iii) Light pulse.

Which of the following would produce analog signals and which would produce digital signals?
(iii) Light pulse.

Which of the following would produce analog signals and which would produce digital signals?
(ii) Musical sound due to a vibrating sitar string.

Would sky waves be suitable for transmission of TV signals of 60 MHz frequency?

Two waves (A) and (B) of frequencies 2 MHz and 3 MHz, respectively are beamed in the same direction for communication via sky wave. Which one of these is likely to travel longer distance in the ionosphere before suffering total internal reflection?

Why is a AM signal likely to be more noisy than a FM signal upon transmission through a channel?

Compute the LC product of a tuned amplifier circuit required to generate a carrier wave of 1 MHz for amplitude modulation.

The maximum amplitude of an A.M. wave is found to be 15 V while its minimum amplitude is found to be 3 V. What is the modulation index?

Which of the following would produce analog signals and which would produce digital signals?
(iv) Output of NAND gate.

Two waves $A$ and $B$ of frequencies 2 MHz and 3 MHz, respectively are beamed in the same direction for communication via sky wave. Which one of these is likely to travel longer distance in the ionosphere before suffering total internal reflection?

Why is a AM signal likely to be more noisy than a FM signal upon transmission through a channel?