Signal | MCQs

Explanation

The computer that processes both analog and digital signal is called hybrid computer.

Hybrid computers are computers that exhibit features of analog computers and digital computers.

The digital component normally serves as the controller and provides logical and numerical operations,

while the analog component often serves as a solver of differential equations and other mathematically complex problems.

Explanation

• Attenuation refers to the decrease in strength or intensity of a signal as it travels through a medium or is processed by a system.
• This can occur due to various factors such as resistance, impedance, or absorption, and can affect the quality and fidelity of the signal.

Explanation

An analog signal is a voltage, current, or physical quantity that continuously and infinitely varies in accordance with some time-varying parameter.

For example, radio waves, television waves, or sound waves are all examples of analog signals.

Explanation

Hertz (Hz) is the unit used to measure the frequency of an analog signal, and higher frequency means higher bandwidth.

Bandwidth in analog signals refers to the range of frequencies, which is expressed in Hertz.

Explanation

In Linux Interprocess Communication (IPC), signals are used to notify a process that a particular event has occurred.

They are asynchronous, meaning they can arrive at any time, regardless of what the process is doing.

Explanation

Attenuation refers to the loss of signal strength as it travels through a medium, causing the signal to weaken over distance.

It is commonly seen in electrical signals, where the energy diminishes due to resistance or interference.

Explanation

A low Signal-to-Noise Ratio (SNR) means that noise is stronger than the signal, leading to poor clarity and potential distortion in communication.

A higher SNR indicates a stronger signal relative to noise, resulting in clearer communication.

Explanation

In signal transmission, amplification is used to increase the signal strength to counteract attenuation (loss of signal over distance).

This helps maintain signal quality during long-distance transmission.

Explanation

Explanation

The long-distance carrier system provided in the United States of America and throughout the world is designed to transmit voice band signals over high-capacity transmission links, such as coaxial cable and microwave systems. 

Long-distance coaxial cable systems were introduced in the United States in 1946